July 2005 Vol. XXXIV No. 7 The Observer A Publication of The Cuyahoga Astronomical Association PO Box 868, North Olmsted, OH 44070 CAA Homepage: http://www.cuyastro.org CAA Officers Name Phone E-mail Address President: Lynn Laux 440-846-0966 firstname.lastname@example.org Vice President: Les Fox 440-746-0721 email@example.com Treasurer: Ted Sauppé 440-930-5228 firstname.lastname@example.org Secretary: Sam Mortaro 440-845-9347 Member At Large: Larry Baumann 440-965-5921 email@example.com Member At Large: Jim Cofer 440-356-2508 firstname.lastname@example.org Member At Large: Steve Spears 440-892-1995 email@example.com Observatory Director: Chuck Reinhart 440-236-9285 firstname.lastname@example.org Editor, The Observer: Jeff Lewis 440-734-2879 email@example.com CAA Webmaster: Jim Guilford 440-877-0372 firstname.lastname@example.org Location TBD west of Columbia Road in North Olm- 2005 CAA Calendar - Summary No Board Meeting in sted. December 7/9/05 Sat CAA OTAA Convention 7/11/05 Mon CAA General Membership 2005 CAA Calendar - Detail Monday, August 8 7:30 p.m. Meeting – LENSC CAA General Membership Meet- 7/16/05 Sat CAA Observatory Open ing at 7:30 p.m. in the Cleveland dusk House – Letha House Saturday, July 9 Metroparks Rocky River Nature Cen- 7/25/05 Mon CAA Board Meeting – CAA OTAA Convention at the ter. Program to be announced. 7:30 p.m. Starbucks CAA Observatory next to the Letha 8/8/05 Mon CAA General Membership House Park Barn, 10311 Spencer Lake 7:30 p.m. Meeting – RRNC Saturday, August 13 8/13/05 Sat CAA Presentation “The Rd., just west of Richmond Rd., in CAA presentation and star party 8:00 p.m. Milky Way – It’s Not Just Chatham Township. Registration at 8:00 p.m. at the Letha House Warm A Candy Bar”, followed starts at 5 p.m. There will be a pot Up Room and CAA Observatory. The by an Observatory Open luck dinner. We will be there rain or House and Star Party – topic for this program is “The Milky Letha House shine. See enclosed flyer. Way – It’s Not Just A Candy Bar”. 8/29/05 Mon CAA Board Meeting – We need a speaker for this event. If 7:30 p.m. Starbucks Monday, July 11 you are interested, please contact Les 9/10/05 Sat CAA Observatory Open CAA General Membership Meet- dusk House – Letha House Fox. The presentation will be put on ing at 7:30 p.m. in the Schuele Plane- 9/12/05 Mon CAA General Membership rain or shine. Weather permitting, tarium in Bay Village. The Schuele 7:30 p.m. Meeting – RRNC please bring your telescopes for the 9/26/05 Mon CAA Board Meeting – Planetarium is located right next to the public star party that will follow the 7:30 p.m. Starbucks Lake Erie Nature and Science Center presentation. 10/1/05 Sat CAA Presentation “A in the Huntington Reservation of the 7:00 p.m. Night With The Stars” and CAA members that are planning Cleveland Metroparks at 28728 Wolf Star Party – Letha House on attending this event please call the Road in Bay Village. See map on next 10/8/05 Sat CAA Observatory Open Medina County Park District office at dusk House – Letha House page and the article under Club News 330-722-9364 to register. 10/10/05 Mon CAA General Membership for more information. 7:30 p.m. Meeting – RRNC Monday, August 29 10/24/05 Mon CAA Board Meeting – Saturday, July 16 7:30 p.m. Starbucks CAA Board Meeting at 7:30 p.m. CAA Observatory Open House at 11/12/05 Sat CAA Observatory Open at Starbucks Coffee Co. Starbucks is Letha House park at dusk. dusk House – Letha House located at 24950 Lorain Road, just 11/14/05 Mon CAA General Membership west of Columbia Road in North Olm- 7:30 p.m. Meeting – RRNC Monday, July 25 11/28/05 Mon CAA Board Meeting – CAA Board Meeting at 7:30 p.m. sted. 7:30 p.m. Starbucks at Starbucks Coffee Co. Starbucks is 12/12/05 Mon CAA Christmas Party – located at 24950 Lorain Road, just The Observer July 2005 2 Saturday, September 10 CAA Observatory Open House at Letha House park at dusk. Monday, September 12 CAA General Membership Meet- ing at 7:30 p.m. in the Cleveland Metroparks Rocky River Nature Cen- ter. Program to be announced. Monday, September 26 CAA Board Meeting at 7:30 p.m. at Starbucks Coffee Co. Starbucks is located at 24950 Lorain Road, just west of Columbia Road in North Olm- sted. Sky Events for July 2005 shower peaks. Total Income - Expenses $71.39 Wednesday, July 13 Sky Events for August 2005 The Moon passes 0.8° south of Ending Petty Cash $77.44 Ending Bank Balance $5,299.27 Jupiter, 2 p.m. EDT. Sunday, August 7 Ending Assets (T-Shirts) $32.90 The Moon passes 1.2° north of Total Ending Assets $5,409.61 Sunday, July 17 Venus, midnight EDT. Observatory Fund Balance (liability) -$200.00 The Moon passes 0.6° north of Antares, midnight EDT. Monday, August 8 Ted Sauppé, Treasurer Neptune is at opposition, noon Friday, July 22 EDT. Venus passes 1.2° north of Secretary’s Report Regulus, 11 a.m. EDT. Club News / Stories June 2005 General Membership Meeting Saturday, July 23 Treasurer’s Report Minutes Saturn is in conjunction with the Sun, 1 p.m EDT. June 2005 6/13/2005 7:30 p.m. at RRNC 1. Motion made by Steve Spears to Beginning Petty Cash $61.29 Wednesday, July 27 Beginning Bank Balance $5,244.03 accept May’s General Member- The Moon passes 4° north of Starting Assets(T-Shirts) $32.90 ship meeting minutes. Seconded Mars, 4 p.m. EDT. Total Beginning Assets $5,338.22 by Larry Baumann. Accepted Southern Delta Aquarid meteor unanimously. Income 2. Motion made by Carl Kelley to Coffee Donations $16.15 accept May’s Board Meeting Dues Membership $101.25 Bank Interest $2.12 minutes. Seconded by Sam Mor- Total Income $119.52 taro. Accepted unanimously. 3. Treasurer’s Report. Ted Sauppé, Expenses Treasurer, reports no changes CAA Newsletter $7.40 compared to what was published CAA Web Site $17.65 Misc. $5.11 in the monthly newsletter. Three Refreshments $17.97 T-Shirts left. Motion made to ac- Total Expenses $48.13 cept report by Sam Mortaro. Sec- The Observer July 2005 3 onded by Steve Spears. Accepted signing effective November 2005. (I unanimously. Board Meeting Minutes think he mentioned something about 4. Old Business. All material mailed 6/27/05 7:30 p.m. at Starbucks “getting a life!”) Seriously, though, by Lynn Laux for Astronomy Day 1. In attendance: Sam Mortaro, Ted Chuck will be very sorely missed. He to Sky and Telescope and Astron- Sauppé, Jim Cofer, Lynn Laux, has served our club well in a capacity omy League. Les Fox and Jeff Lewis that rarely gets “thanks”. We will con- 5. This Saturday, 6/18/05, clean up 2. Medina Park’s Buckeye Woods tinue to see Chuck at our meetings, as at Letha House. Carl Kelley re- 40th anniversary celebration is on he will remain a member. This means ports painting and some scraping Saturday, July 23, 2005. CAA that I am now looking for an Observa- needs done. Meet at 10:00 a.m. will be observing there. Further tory Director! As you may know, this 6. Second Saturday of month club details to follow. is an appointed position by the Presi- still observing at Letha House. 3. Les Fox will be relocating. Les dent. If you are interested in becom- 7. Reminder, our general member- turned in a letter of resignation ef- ing Observatory Director, please con- ship meeting on 7/11/05 will be fective August 2005. Les will be tact me ASAP at held at Schuele Planetarium in the missed. Good luck to you and email@example.com. I can then Lake Erie Nature and Science your family Les. outline for those interested the duties Center in Bay Village. Bring your 4. A discussion will be held at the involved in the position. I would like scopes for evening observing. next general membership meeting to have someone in place before 8. Need help with CAA OTAA con- to gauge interest in purchasing Chuck is unavailable so that we can vention on July 9, 2005 at Letha Polo shirts with the club’s logo. take advantage of his knowledge! House. Please contact Sam Mor- 5. Ted Sauppé reports on member- taro if interested. ship forms and handbooks. No Medina County Park Dis- 9. Chuck Reinhart will be stepping changes on dues. trict 40th Anniversary Cele- down as Observatory Director at 6. Club’s Xmas party will be dis- the end of the year. If interested, cussed at the next board meeting. bration please contact Lynn Laux. This is This event is being held at Buck- an appointed position. Sam Mortaro, Secretary eye Woods Park on Saturday, July 23, 10. Thanks goes to Frank Pistora for 2005 from 3 – 8 pm. The park is lo- bringing donuts to this month’s Road Trip: July CAA Mem- cated on SR 162 in Lafayette Town- meeting. Steve Spears has volun- bership Meeting to be Held ship, ½ mile east of US 42. See map teered to bring donuts to August’s on next page. meeting. at Schuele Planetarium! CAA will be participating in this 11. Welcome to Diane and family. by Lynn Laux celebration by providing a Star Gazing Were guests at our meeting. As decided at the May 2005 party with set up taking place between 12. Les Fox reports Matt Franduto membership meeting, the CAA is go- 7:30 and 8:30 pm. Please consider will be our August speaker. Still ing on the road to Schuele Planetar- helping out by bringing your scopes need a November speaker. See ium in Bay Village for its July 11 for this event. CAA members will be Les Fox if interested. general membership meeting. Don’t allowed to park in the reserved park- 13. Some wonderful observations forget that the meeting will begin at ing area for vendors and staff. Please were reported by: Chris Burke, 7:30 pm in the planetarium with our mention you are a CAA member help- Bill Murmann, Jay Reynolds, business meeting, followed by an in- ing with the Star Party. Lynn Laux, Carl Kelley, and Erik formal presentation by Jay Reynolds Schedule of Events Hall. Thanks everyone; keep and Lynn Laux. There will be an in- 1. Friends of the Parks and Trail them coming. formal star party after the meeting, Monitors 14. Jay Reynolds reports Saturday, weather permitting! If you have not 2. Pan Harmony Steel Drum Band August 20 NASA Glenn will have been out to the Schuele Planetarium, from 6:30 – 8:30 pm. Astronomy Day at Lake Erie Na- you are in for a treat! The CAA mem- 3. Chainsaw woodcarving demon- ture and Science Center. Doors bership would like to thank Jay Rey- stration from 3:00 – 6:30 pm.; open at 10:00 a.m. Need scopes nolds for graciously allowing us the auction of finished products at for both day and evening viewing. use of the beautiful facility! 7:00 pm. Contact Jay Reynolds if interested 4. Anniversary cake in helping. 5. Food 15. Speaker this month was Jason Observatory Director 6. Organ grinder display Shin from the Astronomy Club of Needed! 7. Fishing Akron. Jason’s talk was on Radio by Lynn Laux 8. Buckeye Woods Park / Schleman Astronomy. Very well informed Nature Preserve historic hikes at As many of you may have read in talk. Thanks goes out to Jason 3:00 and 5:00 pm. the last minutes, our Observatory Di- Shin. 9. Kids’ games rector, Chuck Reinhart, will be re- The Observer July 2005 4 10. Activity tent: Medina County inconvenient. There are some good Sheriff’s Department (I.D.-A- 6” blue tube Dobsonian reflector with 30mm reflective tapes that could be used, but and 20mm Series 500 Plossl eyepieces Kid), face painting, leather stamp- C.J. Campbell May 2004 they aren’t as good as retroreflective ing, and button-making craft. glass cubes. 11. Display tent: Medina Raptor Cen- Apollo 11 astronauts Buzz Aldrin ter, Bugs Unlimited, and Northern Looking Up and Neil Armstrong put an array of Ohio Association of Herpetolo- by Charles H. Grace retroreflective glass cubes on the gists and their special presenta- Laser Reflections Moon in 1969, and other arrays were tions: Scintillating Serpents at from the Moon put in place during later Apollo mis- 4:00 pm., Snazzy Salamanders To measure the distance to the sions. An array consists of a mosaic and Funky Frogs at 5:00 pm. and Moon, astronomers send laser pulses of 100 glass corner cubes, each 1-1/2 Venomous Snakes at 6:00 pm. to special reflectors on the Moon and inch in diameter, in a panel a couple of 12. OSEK demonstration and kite measure the round-trip time when the feet wide. It is called a “lunar laser making; $2 per kite. reflected pulses arrive back, as is done ranging retroreflector array.” 13. Hot air balloon rides by ReMax of with radar. Non-laser light pulses There are three internal reflections Medina from 5:00 to 8:00 pm. $5 wouldn’t work because their asyn- within such a corner cube, so that a per ride (proceeds going to Chil- chronous beams would be attenuated corner cube reflects an incident beam dren’s Miracle Network). too much by fanning out. Laser light of light back in the direction it came 14. Teapot the Clown (balloon ani- reflected from the surface of the Moon from, just as happens when you hit a mals) from 3:00 – 5:00 pm. without a special reflector would be ball into the corner of a squash court. 15. Cuyahoga Astronomical Associa- too weak to be detected easily on Corner cubes can be thought of as tion (CAA) will host a star gazing Earth because diffuse reflection by the passive transponders, reflecting almost party at dusk. Moon’s surface would scatter the en- 100 % of the incident light. They ergy too much. require no power, and some are still working well 35 years after they were installed. To use the reflective cubes, astronomers direct powerful lasers onto an array through telescopes on the Earth, and the corner cubes reflect the laser beams back to the telescope they came from. An important Moon observing site is the McDonald Observatory in Texas, where a 0.7-meter telescope regularly pings beams onto three or four arrays of reflectors in different locations on the Moon. Other tele- scopes around the world used for laser ranging to the Moon are located in Hawaii, California, France, Australia and Germany. When, as is usual, a telescope is used, the laser beam enters where the eyepiece would be, and the beam is optically expanded up to the diameter of the main mirror. The enlarged laser beam reflects at the main mirror and travels up to the cubical reflectors on the Moon. Upon receiving a return At the Moon’s surface even a la- signal from the Moon, astronomers use CAA Loaner Telescopes ser beam is about a mile wide. A sin- very sensitive equipment to filter and gle mirror giving specular reflection of amplify the received signal, which Club-Owned Telescope Availability a laser beam would work for ranging, might be as weak as only a few pho- Telescope Description, including mount, eye pieces, etc. but the angle of reflection equals the tons per second. Member Loaned To Loan Date Due Date angle of incidence, so it would reflect By measuring the travel time of a the beam back in the same direction it laser pulse from Earth to the Moon 6” f/8 German equatorial reflector with eye- came from only when the beam arrives and back, the exact distance to the pieces perpendicularly to the mirror, which is Moon’s reflector can be calculated (at Mike Madigan May 2004 The Observer July 2005 5 the time of measurement) to an accu- Space Stuff second story deck for observing. Was racy of less than an inch. That’s pretty by Matt Franduto it worth it? I don’t know, but so far, so precise measuring, considering that the good. Moon is about 239,000 miles from Was it worth it? Earth. Scientists are pleasantly sur- I have to admit, I was a little Comet Hunting: 9P/Tempel prised that Moon dust and pitting by nervous. 1 meteoroids haven’t significantly im- It was 10 o’clock on Wednesday paired the surfaces of the reflectors. night as I set up the shiny tripod. I by Lynn M. Laux Laser measurements have pro- decided to set up inside rather than on On April 16, 2005 Stephanie vided evidence that the Moon may the deck. Next, came the eyepiece McLaughlin of UMD/NASA Deep have a small liquid core. This theory holder and, finally, I pulled the LX-90 Impact Mission came to NASA Glenn is based on the Moon’s rate of rotation from its box and Styrofoam cocoon. to speak on the Deep Impact Mission and very slight bobbing motions Everything screwed together perfectly. Small Telescope Science Program caused by gravitational effects of the I pulled out the autocontroller and (STSP) and Amateur Observer’s Pro- Sun and Earth. eyepiece case. I grabbed the extension gram (AOP) for CAA’s Astronomy The Moon has also been found to cord and adapter – where possible, I Day. Up to that point I had paid little be gradually receding from the Earth. prefer running the telescope without attention to the Deep Impact Mission, The rate is about an inch and a half per batteries. I opened the doors and in which a probe will crash into a lit- year, for which the Earth’s ocean tides walked out onto the deck. tle-known comet. are responsible. Still nervous, I snuck a quick look Subsequently, calls went out to Newton’s gravitational constant G at the sky. Not a good night. Too the amateur astronomy community to has been found to be very stable, hav- many clouds. But, I could see the ob- help generate data and observations ing changed less than 1 part in 100 ject of my desire – Jupiter - shining in prior to and directly after the impact. billion since the measurements began. a lonely patch of clear sky. Good What is a comet? Of course there are now many enough for tonight’s test. Unlike the other small bodies in other uses of lasers of many types, After the cord was plugged in, I the solar system, comets have been although when lasers were invented in examined the deck, looking for just the known since antiquity. There are Chi- 1960 they were called “a solution in right place. Although bigger and nese records of Comet Halley going search of a problem.” Lasers are used higher than we originally planned, was back to at least 240 BC. The famous in many medical procedures such as it enough? Bayeux Tapestry, which commemo- surgical incisions, cauterizing, no- Back inside, I grabbed the tele- rates the Norman Conquest of England touch removal of brain tumors, and scope and carried it out onto the deck. in 1066, depicts an apparition of reattaching detached retinas. I spread the legs of the tripod and it Comet Halley. Lasers are also used for heat treat- settled down nicely and mostly level. As of 1995, 878 comets have been ing only selected bearing surfaces of Stepping back and surveying the cataloged and their orbits at least larger parts such as camshafts to pre- situation, it seemed as though the deck roughly calculated. Of these, 184 are vent their warping, in welding and was plenty big and, with the exception periodic comets (orbital periods less cutting of metals and other materials, of low west to northwest, it was going than 200 years); some of the remainder and in the garment industry for cutting to be a good location. are no doubt periodic as well, but their out hundreds of garments at one time. Choosing to do a manual sighting, orbits have not been determined with They are used in laser nuclear fu- I fired up the autocontroller and by- sufficient accuracy to tell for sure. sion, in spectroscopy, in CDs and op- passed the alignment instructions. Comets are sometimes called dirty tical disks, in barcode scanners using After centering Jupiter in the finder- snowballs or "icy mud balls". They are rotating mirrors, in many military ap- scope, I took a deep breath and looked a mixture of ices (both water and fro- plications, in surveying, in communi- into the eyepiece. zen gases) and dust that for some rea- cation e.g., by sending pulses through Jupiter! The stripes ran across it, son didn't get incorporated into planets optical fibers, and more recently in just like I’d seen so many times before when the solar system was formed. “laser cooling.” with three moons to the left and one to This makes them very interesting as As marvelous, clever and useful the right. No GRS, tonight, but there samples of the early history of the so- as these other applications of lasers will be time for that later. lar system. are, I still think that to measure the The clouds were very bad, so I When they are near the Sun and distance to the Moon with an error of moved on to quick tests of Antares, active, comets have several distinct less than one inch, is the most dazzling M4, Albireo, and M13. Back, to Jupi- parts: and impressive of all the laser accom- ter one last time and then it was done. • nucleus: relatively solid and sta- plishments. The whole observing “session” had ble, mostly ice and gas with a lasted 45 minutes. small amount of dust and other When we bought the property and solids; designed the house, I really wanted a The Observer July 2005 6 • coma: dense cloud of water, car- How I got Involved shows the field of view I could expect bon dioxide and other neutral After reading the information and to see when imaging M13 without a gases sublimed from the nucleus; requirements for the STSP, I deter- focal reducer. It took me several nights • hydrogen cloud: huge (millions mined that I had the telescope aperture to figure out how to use the DSI, as of of km in diameter) but very sparse (8”), filters (Astronomik IR filter), and this writing I would say I am a com- envelope of neutral hydrogen; camera (Meade DSI) that qualified me plete novice. It is a little trickier to • dust tail: up to 10 million km to participate. Furthermore, if I could use than my SAC IV camera—not as long composed of smoke-sized get some observing time on the ACA intuitive—and needs practice to mas- dust particles driven off the nu- club scope that would be even better. ter. However I was fairly satisfied cleus by escaping gases; this is the Filling out the form was another mat- with the images I got of M13, M57, most prominent part of a comet to ter. It took me about an hour to get Albireo and M92. the unaided eye; through the first two pages, I hit • ion tail: as much as several hun- “save” as the site directed, intending to dred million km long composed of get back to it as soon as I could. Life plasma and laced with rays and intervened (as it sometimes does!) and streamers caused by interactions the next thing I knew Dr. Elizabeth with the solar wind. Warner was contacting me to find out Comets are invisible except when if I was going to finish filling out the they are near the Sun. Most comets form. After a little discussion, I de- M13: Hercules cluster have highly eccentric orbits which take cided to register for the AOP and give them far beyond the orbit of Pluto; it a try. these are seen once and then disappear The Hunt for the Comet for millennia. Only the short- and in- I enlisted Ray Paul to help me in termediate-period comets (like Comet this endeavor. But I had a few skills to Halley), stay within the orbit of Pluto master first, namely the Meade DSI. for a significant fraction of their orbits. According to Meade’s ads, “The Deep Many comets are first discovered Sky Imager is a high-performance, by amateur astronomers, and are easy-to-use color CCD camera that named after their discoverer. Since allows every astronomer to shoot and M57: The Ring comets are brightest when near the process stunning deep sky photographs Sun, they are usually visible only at of galaxies, nebulae, star clusters and sunrise or sunset. Charts showing the planets their first night out.” It utilizes positions in the sky of some comets a High Sensitivity Sony® Super can be created with a planetarium HAD™ Color CCD Sensor with a program. pixel array of 510 x 492, pixel size of What is Deep Impact? 9.6 microns x 7.6 microns, 16-bit A/D Deep Impact is a NASA Discov- conversion, and a min/max exposure M92 ery mission that launched January 12 time of 1/10,000 of a sec to 1 hour. 2005 and will crash into comet 9P/Tempel 1 in July 2005. Mission scientists and engineers are relying on observations made before and after the impact and taken by professional ob- servatories, students and amateurs to provide context for the data taken by Albireo the flyby spacecraft. The Small Tele- scope Science Program (STSP) is a Just a word on using the collaborative effort among advanced DSI…while it is possible to get images observers, private observatories, and the first time out, I think “stunning” is professional astronomers spread a bit of a stretch. It definitely depends around the world to gather ground- on the location you are taking pictures based optical data on comet from, and the steadiness of your skies. 9P/Tempel 1, the target of the Deep Also, for an alt-az mounted telescope Impact Mission. The Amateur Ob- such as my Meade 8” LX200 Classic, servers Program (AOP) is for those you have to be aware of the camera who want to provide written descrip- body knocking into the base of the tions, sketches, film photographs, or telescope as objects move towards Here is a screen shot from Ron zenith. The DSI imager group has CCD/CMOS images on the comet. Wodaski’s CCD Calculator which The Observer July 2005 7 recommendations for the perfect imag- ing “zone” if you will, and unlike other imaging methods, it is not when the target is at zenith. Of course, I made all those mistakes, but I have a better “feel” for what it takes to image DSO’s than before. I also have to add that some of the images one sees asso- ciated with this particular camera are the result of hours of tweaking in post- processing by the creator--so one has As you can see, the comet is very to be prepared to do just that. How- faint! The FITS-X program from ever, with practice I am sure that this COAA estimated its brightness closer little camera will become easier to use. to 10 mag. You can see the slight ro- tation due to the alt-az rotation of my We spent several hours refining I did determine that a Hartmann mask scope (in GEM scopes the stars appear focus and grabbing images before los- and a focal reducer will be necessi- as streaks). This gave me great hopes ing the comet to the edge of the build- ties!! and now all I could do was keep my ing. If the scope was mounted lower On to the Comet fingers crossed as the weekend ap- on the pier, we would have lost the At this point I felt I was ready to proached for clear skies!! comet at least an hour and a half be- tackle the comet. I had managed to On Friday, June 24 Ray and I fore we actually did; as it was we were view it on several different occasions headed out to the observatory to try able to view the comet from approxi- and from several different sites and and catch the comet. Again we used mately 10:45 pm until 12:45 AM. learned that it was very faint: mag 11 the ephemeris generated by the JPL Flushed with success we headed rather than mag 9.6 as predicted by Horizons System to give us the coor- out again on Sunday night, June 26. Starry Night Pro or The Sky. I even dinates for the comet. This time, The skies were rather ‘mushy’ but we submitted a sketch which Dr. Warner though, we were going to use the 14” decided to try anyway. On this at- posted on the AOP site. LX200 GPS to grab an image! Here is tempt, the seeing and transparency was what the FOV would be with the DSI not as good as it had been on Friday. and the 14”: But using a combination of the ephemeris from JPL and two planetar- ium programs on my laptop (Starry Night Pro and Autostar Suite), we con- firmed that we had the comet in view. I was ready! On June 19 Ray Paul and I headed out to the ACA ob- servatory armed with the ephemeris from The Sky. It took us a couple of hours to find the comet in both the 8” and the 14”; we determined that per- haps the ephemeris from both our planetarium programs and Sky and Telescope provided only a rough esti- mate of where the comet was; we would need more specific information. On Wednesday, June 22 I used the information downloaded from the JPL Again, we lost the comet after Horizons Systems about an hour to the seeing conditions; http://ssd.jpl.nasa.gov/cgi-bin/eph to one minute it was in the EP, and the give me more exact coordinates on next the comet ‘winked out.’ But we The scope performed magnifi- Comet 9P/Tempel 1 spaced every half were fairly certain we had captured the cently, putting the comet in the center an hour as viewed from the ACA. I best image we could. of the FOV of a 20 mm EP; using a 9 located the comet visually in the eye- Future Plans mm Ortho EP we achieved focus for piece, achieved focus, stuck the DSI in The comet will not be visible at the camera, flipped the mirror, and and grabbed an image of the comet. the time that Deep Impact is scheduled voila! There was the comet on my to occur (between 05:49 and 5:55 UT laptop! July 4th or 5:52 +/- 3 minutes—which is July 4 1:52 AM EDT). However, The Observer July 2005 8 we hope to get some images shortly Binocular Mount Construc- to size where possible. The prototype before impact and then on subsequent tion Notes cost about $26.00 to build. The bin- nights. The hopes from NASA are ocular “L” bracket and an old light that ground based telescopes will be by Jerry Kay duty ball swivel mount were already able to observe a slight brightening in The inspiration for this mount on hand. the comet’s image due to ejecta gener- came about when I purchased a pair of Even though I used only ½” pine ated by the impact. Those who wish to 11 x 70 Oberwerk binoculars recently. for the main and short beams, the view the impact in real time should go As expected, I am nowhere near steady mount was remarkably useful. My 11 to this site: enough to handhold these binoculars x 70’s were held nicely and balanced NASA TV at even though they are not very heavy. I with only 5 lbs of counter weight. I http://www.nasa.gov/multimedia/nasat knew quickly enough I needed a was amazed at how many more faint v/MM_NTV_Breaking.html mount of some sort. A friend was also stars I could see because the binocu- For press releases, go here: in need of a mount. He has a much lars were held steady. I thought I was http://deepimpact.umd.edu/press/0 heavier pair of Fuji 15 x 70’s. steady enough to hand hold my old 7 x 50627nasa.html I saw a commercial example of a 50’s but even those binoculars showed For more information on the parallelogram mount in a camera store. more stars when held securely. Amateur Observers Program, go here: In my opinion it is too expensive, and We tried the prototype with my http://deepimpact.umd.edu/amateu too shaky and vibration prone. friend’s 15 x 70 Fuji’s and found the r/index.shtml I tried adapting an old desk mount mount acceptable but a little shaky. For more information on the fluorescent light mount that uses a More counterweight was needed as Small Telescope Science Program, go parallelogram. It was neither strong well. Additionally, the old ball swivel here: nor stable enough. I had on hand was too small for the http://deepimpact.umd.edu/stsp/in I built a wood prototype and tried Fuji’s. dex.shtml to select materials to minimize shop The second version was made out Happy Comet Hunting!! time as much as possible. For the pro- of ¾” oak and once again precut lum- totype I used the cheapest pine I could ber was purchased as much as possi- find. I also selected wood already cut ble. I also purchased another ball The Observer July 2005 9 swivel. The new swivel, made by will allow me to shorten the post and bolts will need to change. If the ProMaster, is much larger and heavier hopefully reduce the sway even more. lengths of the main and short beams than my original ball screw but held all The cost for all the wood and hard- are altered, realize that the amount of the binoculars securely. However, the ware for version two was about $35. counterweight required will also added weight of both the wood and the The ProMaster ball swivel was an ad- change. Shorter beams, will require ball swivel required more counter ditional $30. more weight. In general, the counter- weight. I have included four drawings that weights provide a torque opposite to Version two is very satisfactory. detail the individual parts and how the torque generated by the weight of All the binoculars I tried are held se- they fit together as an assembly. I’m the binoculars and ball swivel. To curely and comfortably enough to sure Mr. Allen, my old drafting balance, the weight of the binoculars permit hands free viewing directly teacher would not approve of the lack and ball swivel multiplied by the dis- overhead. of detail but I tried to convey as much tance from the center of mass of the The only thing that probably detail as necessary to build the mount binoculars and ball swivel to the center should be changed is the height of the and not confuse the drawing with all of the main post should equal the main vertical post. I left the main post the hidden lines and dimensioning that weight of the counterweight multiplied long intentionally because I was un- should be there. I drew the mount full by the distance from the center of the sure of what length is necessary to scale but had to reduce the drawings to main post to the center of the counter- work with various tripods. I felt I fit on 8-1/2” x 11” paper. I felt I had weights. Slightly more weight will could always shorten it if necessary. to reduce the detail with that much probably be required than this simple I have a fairly heavy medium duty reduction. I apologize in advance for calculation would indicate because the photographic tripod. My friend has the unusual reductions (1/3 and 1/5 weight of the wood distributed along two much lighter and shorter tripods. scale) but there should be enough de- the length of the beams also comes The mount worked well with the tail to construct this mount without too into play. As long as the counter shorter tripods without raising the cen- much skull sweat. weight is neither to heavy nor too ter posts too much. There was some The construction may be altered light, balance can be achieved by sim- sway in the mount due to the long post to accommodate materials already on ply sliding the weights for and aft. and some flexure in the small tripods. hand. Just remember that if thinner or The only dimensions that should My heavier tripod is pretty stiff and thicker wood is used, the lengths of the be considered critical are the dimen- The Observer July 2005 10 sions between the pivot bolts. I used correct lengths. The main post, item The taper is shorter, the threads will be 5” vertical spacing and 16-1/2” hori- 1, the short vertical post, item 4, and deeper and farther down the hole. zontal spacing. The dimensions can the short horizontal post, item 5, are Finally, I switched to a bottoming tap. be anything within reason as long as cut from the same piece of 1-1/2” x This tap has the shortest taper of all all vertical dimensions are the same 36” long ¾” oak square stock. As and produces the deepest thread all the and all horizontal dimensions are the purchased, the post was about 36-1/4” way to the bottom of the hole. I was same. For instance, if a 5” hole spac- long allowing two 8” pieces to be cut lucky in that I had all three taps. Most ing is used on the main post and 5-1/8” from it forming the two short posts and taps sold in sets are of the plug tap spacing is used on the short vertical one 20” long post. variety. They will certainly work by post, some binding will probably occur The two 36” long beams are cut themselves but care must be exercised and prevent the parallelogram from from one piece of 6’ long ¾” oak so that the tap does not break off in the opening and closing to the fullest ex- stock. hole. Always use cutting oil when tent possible. The same can be said The two 18” beams were cut from tapping. Twist the tap no more than for the horizontal hole spacing on the two pieces of 24” long ¾” oak stock. 1/8 turn then back off to break the beams. Consistency is more of a con- Tripod mount bolt chips. Remove the tap and blow out cern than accuracy here. The worst task. Refer to pages the chips frequently. Use cutting oil The following notes refer to the one and two. Drill a 13/64” diameter liberally. four drawings provided. hole at least 5/8” deep into the head of Once the thread is in the head of Drawing one is a side and top the 3/8” x 6” lag screw, item 10. The the lag screw, take the 3/8” fender view of the mount and also contains a hole must be straight. I used a succes- washer, item 13, and place it on the lag minimal parts list. The circled num- sion of three taps. All were ¼-20 but screw. Measure the combined thick- bers refer to the items number in the each had a different taper at the end of ness of the screw head AND the parts list. Where there are two circled the tap. I started with a ¼-20 tapered washer. 11/32” in my case. numbers, one of each item is required tap. This tap has the longest taper and Drill a 1/16” pilot hole about 1” at that position. will produce the shallowest threads but deep in the exact center of the bottom Construction will be the easiest to hand tap so of the main post, item 1. Then, use a Start by cutting the lumber to the deeply. Next I switched to a plug tap. spade bit or Forstner bit to drill a flat- The Observer July 2005 11 bottomed hole 11/32” deep (or your pivot holes in the short vertical post, Short horizontal post, item 5 measurement) centered on the pilot item 4 first. Be sure to drill the holes Nothing tricky here. Layout and hole. The idea is to make the hole just straight. If the holes are not perfectly drill two ¼” through holes ¾” from deep enough so that the head of the perpendicular to the surface of the each end of the 8” long post. bolt, when tightened, is absolutely post, the pivot bolts will not fit Short and long beams, flush with the bottom of the post. through the holes in the side beams items 2 and 3 Done carefully, this will maximize the properly. Binding will occur when the Refer to drawing three. Consis- contact area that will mate to the tri- mount is raised and lowered. tency is important once again. Start pod head. The pilot hole really isn’t In order to help with consistency with one short beam. Layout and drill necessary but it makes the next task a use the short vertical post as a drilling two ¼” diameter through holes ¾” lot easier. template. Clamp the short post to the from each end of one short beam. Be Next, drill a ¼” diameter hole us- main vertical post making sure that the sure to drill perpendicular to the sur- ing the 1/16” pilot hole as a guide. two posts are oriented properly for face of the beam. As shown, this pro- Make this hole the depth of the lag drilling. The hole ¾” from the end of duced two holes 16-1/2” apart. Use screw- 6” as shown in the drawing. the short post should be clamped to the this short beam as a drilling template Clamp the post in a vice and top of the main post so that the top to drill all the remaining holes in the tighten the lag screw and fender hole in the main post will be ¾” from remaining beams. washer, items 10 and 13, into the hole. the top edge. Drill through both the Clamp the short beam to the other Use your imagination here. If short and main posts. blank short beam and drill through. drilling and tapping the bolt head as Next, drill a 1/8” diameter pilot Clamp the 1st short beam to one described is not practical, improvise. hole centered on the top of the short end of one of the long beams and drill This isn’t the only way to mount the vertical post, item 4. This pilot hole through. Repeat the process for the post to the tripod but for me, it was the will accept the lag screw and washer, remaining long beam. fastest way to do it and it works well. items 7 and 11, required to bolt the As shown in the drawings I radi- Main Post, item 1 short horizontal arm to the top of the used the ends of all of the beams. This and short vertical post, item 4 short vertical post. is cosmetic only, not really necessary. Refer to drawings one, two and The main post and short vertical Assembly four. Layout and drill the ¼” diameter post are now complete. Not much to say here. Assemble The Observer July 2005 12 the mount and check it out before ap- If the wood is to be finished- ei- a lot cheaper if you already have plying some kind of finish to the ther painted or stained and varnished, an unused tripod laying around. wood. Refer to the assembly drawing, eventually the rotating motion of the • An inside corner brace might be a page 1, and go to it. beams at the pivot points will wear the useful addition where the short Start by bolting the short horizon- finish. vertical post and horizontal posts tal post, item 5, to the top of the short • To protect the finish, I installed are bolted together. vertical post, item 4, using a ¼” x 3” eight extra ¼” fender washers IN • The main post is too long in my lag screw and a ¼” fender washer BETWEEN the posts and the opinion. I left it long to minimize items 7 and 11. beams where the rubbing occurs. waste and to try it with a variety Loosely bolt the two long beams, This required longer pivot bolts. of binoculars and tripods and with item 2, to the bottom of the short ver- The additional washers indeed users of varying height. My tical post, item 4, using ¼ - 20 x 3- separate the beams from the posts friend happens to be over 6’ tall. 1/2” hex head bolts, washers and preventing rubbing of the finish. He can use this mount to look at knobs or wing nuts- items 8, 11 and However, with the extra fender zenith with a fairly short light 14. washers, there is less contact area duty tripod! Loosely bolt the two short beams, at the pivot points and the knobs Although it works well when built item 3, to the top of the short vertical or wing nuts need more force to as shown, a shorter main post will post, item 4, and the top of the main tighten properly. With my 11 x provide more stability and less possi- post, item 1, using ¼ - 20 x 3-1/2” hex 70 binoculars this is no problem. bility of damage if a severe blow is head bolts, washers and knobs or wing Users with heavier, (read MORE applied to the top of the mount. Things nuts- items 8, 11 and 14. EXPENSIVE) binoculars might do go bump in the night. Adjust the Mount your choice of ball swivel not want to install these washers. height of the main post to suit yourself to the end of the short horizontal post Instead, larger thin Teflon or plas- and your tripod. A sturdy, moderately using bolt and washer, items 6 and 11. tic squares might be a better tall tripod will allow a much shorter The remaining setup and initial choice to achieve some separation post. trial should be done in daylight to be- and still maintain a large contact Enjoy. come familiar with setup and tear- area. down. • I also took the time to install short Mount some counterweights as Oilight bronze bushings inside all Swap Corner shown using items 9, 12 and 15. Be- of the pivot holes in the beams cause of the added weight of the and the posts. The bushings I For Sale: thicker oak and the heavier ball found are 5/16” outside diameter 1. Celestron 8” Schmidt Cassegrain swivel, my 11 x 70 binoculars required and ¼” inside diameter and are f/10 (2000mm focal length) or- 10 lbs. of counter weight. I used bar available in ½” and 1” lengths at a ange tube, sand cast fork 110 volt bell weights. local hardware store. These bush- clock drive, tripod, equatorial Carefully thread the mount to a ings are available in brass and wedge, latitude adjuster, 6x30 tripod. Tightening the tripod bolt se- Oilight bronze. The brass bush- finder, visual back, 1¼” 90° di- curely will be easier with better quality ings cost about $2 each. The agonal, 9mm MA Meade and tripods. Be sure everything is secure bronze bushings cost about $0.50 25mm MA Celestron eyepieces. and stable before mounting the bin- each. Like new condition. Asking oculars. I had to drill the ¼” diameter $750. Mount an L bracket to the ball pivot holes out to 5/16”. I pressed ½” 2. Light pollution reduction filter, swivel and mount the binoculars to the bushings into the beam pivot holes and screws onto back of Meade or Ce- L bracket. 1” long bushings into the post pivot lestron Schmidt Cassegrain Tele- Adjust the knobs so the mount holes. scope. Asking $50. will move up and down freely. Care- The addition of these bushings re- 3. Solar filter – Thousand Oaks 8” fully adjust the mount so the horizon- sulted in smoother operation but, in for Celestron or Meade Schmidt tal beams are horizontal. Slide the my opinion, not that much smoother. Cassegrain telescope or other with counter weight for and aft until the Neither the bushings nor the extra a tube diameter smaller than 9- binoculars will balance at all eleva- fender washers are shown on the draw- 3/16”. Asking $60. tions. ings. 4. New 4½”x900mm (f/8) reflecting In use, the knobs can be tightened • My friend decided he didn’t like telescope, altazimuth mount, alu- or loosened to the operators liking. the ball swivel I used so he im- minum tripod, 1¼” rack and pin- If all is well, disassemble the provised on his own and removed ion focuser, 6x30 finder scope, 3x mount, sand the wood and apply the a tripod head from an unused tri- Barlow, image erector. Asking finish of your choice. pod and bolted that to the mount $125. Final thoughts in place of a ball swivel. It works and some improvements well with his 15 x 70 Fuji’s and is The Observer July 2005 13 5. Digital camera adapter, clamps ScopeOut 2005 Astronomy onto eyepiece. Asking $20. Fair 6. New electronic eyepiece, black & white, fits 0.965” or 1.25” eye- Saturday, September 24, 2005 piece holder. Uses RCA type Noon to 10 pm. connector to plug into TV, VCR, Cincinnati Observatory Center, or monitor. Asking $25. Cincinnati, OH 7. New 5.5” black & white TV. 110 Cost: $5.00 adults, $3.00 Chil- volt, with 12 volt car converter, or dren. Add $15.00 for dinner & John 10 “C” cells with video input jack. • Wednesday 2:30pm and 8:30pm Dobson presentation. Asking $10. • Saturday 10:30am, 12:30pm, A National Historic Landmark, For all above items (1 – 7), please 2pm, and 4pm the Cincinnati Observatory Center contact Steve Korylak at (440) 734- • Sunday 12:30pm, 2pm, and 4pm hosts their 7th annual "ScopeOut As- 4171 if interested. Children's Show tronomy Fair" for amateur astronomers of all levels, families & educators. Upcoming Astronomical Events Dinner & Keynote Presentation by Mr. John Dobson, father of "Side- Other OTAA Meetings walk Astronomy". Viewing follows (weather permitting) through their Saturday, August 6, 2005: Ma- historic 1842 Merz & Mahler and honing Valley Astronomical Society 1904 Clark refracting telescopes. OTAA convention at MVCO. Partial listing of events and activi- Saturday, September 10, 2005: ties: Black River OTAA convention at • Tour the "Birthplace of American Birmingham Methodist Church Hall, Astronomy"! Birmingham, Ohio. • Tons of activities for kids and families! Schuele Planetarium Star • Lectures and presentations Parties Strap on your seat belts and get throughout the day. ready for the tour of a lifetime. We're • Local and regional vendors of On the 1st and 3rd Saturdays of going to explore the entire solar sys- astronomical merchandise. every month (year round) there are tem, from the Sun to Pluto... and be- Schuele Planetarium star parties start- • Astrophotography and telescope yond! making displays. ing at 8:15 p.m. following the 7 p.m. • Monday-Friday 11:30 am Planetarium shows (weather permit- • Marvel at their restored Riefler • Saturday 11:30am, and 3pm pendulum clocks. ting). CAA members are welcome to • Sunday 1:15pm, and 3pm • Door Prizes and Raffle bring their scopes to help out at the All public planetarium programs ScopeOut 2005 is under tent and star parties in the field across the street last for approximately 35 minutes. is held rain or shine. from the Schuele Planetarium. Any Each show includes a look at current For more information, directions, CAA members who could help out events in space science, a tour of the or to pre-register for the Dinner and would be greatly appreciated by Jay night time sky from near Cleveland as Keynote Lecture, contact the Cincin- Reynolds and the Lake Erie Nature well as a look at the darkest skies nati Observatory Center: and Science Center. All programs many of us will have a chance to see. (513) 321-5186 include the most recent news from our Each show is presented live by a mu- firstname.lastname@example.org explorations of Mars, Saturn & Hub- www.cincinnatiobservatory.org/scopeout/ seum astronomer which allows for ble Space Telescope. great interaction between the astrono- Other News / Stories mer and the audience members. Re- Shafran Planetarium Pro- member, feel free to shout out answers grams at the Cleveland to the astronomer's questions or even Exciting New Astronomy Museum of Natural History to shout out a few questions of your Web Site / Project own. June 13th through www.planetquest.org Planetarium programs are an addi- August 31st 2005 PlanetQuest is a nonprofit tional $3.00 on top of regular museum Public Program 501(c)(3) organization whose mission admission. Tickets are available at the No, it's not the name of a rock is to inspire global participation in the museum lobby, or you can reserve group. In fact, these objects are much discovery of planets. It is a direct link tickets by calling 216-231-4600 more ice than rock. Let's ponder this between you and the stars, through the ext.3279. question: Is Pluto really a planet? help of our professional astronomers. • Monday-Friday 2:30pm When you join PlanetQuest, you begin The Observer July 2005 14 to contribute to our collective under- "Phantom energy will pull the Note From The Desk of standing of the universe right away! galaxy apart, and then the solar sys- The Editor All you need is a computer and an tem, the sun and all the planets, until Internet connection. all that you are left with are quarks and I am always looking for articles PlanetQuest's scientific mission is electrons," says Vyachadav Doku- for The Observer. If there are any the discovery—by PlanetQuesters—of chaev at the Institute for Nuclear Re- aspiring authors out there who want to thousands of new planets in our galaxy search of the Russian Academy of contribute an article, share a story or within the next five years. Over 150 Sciences. Although observations can- observation, etc. please do so, and I planets around other stars have been not rule out a future big rip, some will include it in the next issue. Also, discovered since 1995. The difficulty physicists have considered it implausi- if you have any items for sale, or if is that planets around other stars are ble because it wasn't clear how phan- you are looking for any items, send too small and faint to be seen directly. tom energy could rip apart black holes, these in and I will include them in the Their presence must be determined from which nothing can escape. Now, Swap Corner. Remember, this is your indirectly through a process that re- Dokuchaev and colleagues say that newsletter, and participation from the quires careful analysis of very large phantom energy does not rip apart the general membership can only make the amounts of astronomical data. black holes- rather, it dissolves them. newsletter better. Thanks to all who Please visit our web site for more "Our calculations show that the have taken the time to send in articles. information. Spread the word, enjoy, more phantom energy falls into the Please send articles, items for sale, and thanks! black hole, the smaller its mass be- items wanted, suggestions, and/or Sarah Nelson comes until, just before the big rip, it comments to: A Friend/Volunteer for Planet will disappear completely," says Do- Jeff Lewis Quest kuchaev. This is because phantom 6147 Sandpiper Lane energy behaves like negative energy, North Olmsted, OH 44070 Black Holes Can't Escape cancelling out the mass inside a black Or you can send them via e-mail hole (www.arXiv.org/astro- to email@example.com. The Phantom Menace Thanks and Clear Skies! ph/0505618). Author: Stuart Clark Still, this is not enough to per- THIS ARTICLE APPEARS IN suade some scientists, who say the NEW SCIENTIST MAGAZINE IS- problem is the nature of the phantom SUE: 2 JULY 2005. energy itself. Roy Maartens of the http://www.newscientist.com Institute of Cosmology and Gravita- UK CONTACT - Claire Bowles, tion at the University of Portsmouth in New Scientist Press Office, London: the UK believes that phantom energy Tel: 44-207-611-1210 or email could theoretically dissolve black firstname.lastname@example.org holes but says, "One has to be very US CONTACT – New Scientist careful. Phantom energy is very topi- Boston office: cal but I'm not sure it is physically Tel: 1-617-558-4939 or email realistic." In fact, no one has even email@example.com produced a complete mathematical WHEN physicists first suggested description of phantom energy. that our universe could end in a big Figuring out whether the uni- rip- a violent death in which all matter verse's dark energy is of the phantom would be torn apart- they struggled to variety is now the focus for astrono- explain one thing: how could anything mers. "Within the next 10 years new shred black holes? Now it seems that observations will place strong con- the energy driving the big rip would straints on the dark energy," says dissolve black holes like aspirins in a Maartens. If it is phantom energy, Do- glass of water. kuchaev believes the big rip will come Whether the big rip happens or sooner rather than later in cosmologi- not depends on the nature of the dark cal terms. "I expect the big rip to hap- energy that is believed to be pulling pen in about 14 billion years time, so the universe apart. One form this en- we are about halfway through the uni- ergy could take is something called verse's life." phantom energy, whose density in- creases continuously and which will eventually accelerate the expansion of the universe so drastically that every- thing will be destroyed. The Observer July 2005 15 The Cuyahoga Astronomical Association invites the public, the Ohio Turnpike Astronomers Association, other astronomy clubs, and all Cuyahoga Astronomical Association members to the 2005 Annual CAA Convention Saturday, July 9, 2005 at The CAA Observatory next to the Letha House Park Barn 10311 Spencer Lake Rd Chatham Township, Ohio (Southwest of Medina. See map.) Program 5:00 p.m. Registration opens. Registration is free. Purchase raffle tickets for chances at items from an excellent list of prizes. This will be a Chinese raffle. Some of the prizes available: Meade Deep Sky Imager; Hardin Optical 6" Deep Space Hunter with base; Edmund Scientific Astroscan telescope; Orion Waist Case Accessory Holder; Orion Astronomer's Versa-Tool; JMI Telescope JMI padded tripod case; Anacortes Tee-shirt; Celestron 1.25" 10 mm SMA; Celestron 1.25" 12 mm SMA, both eyepieces courtesy of Anacortes. 6:00 p.m. Pot Luck Dinner. Please bring your own soft drinks. CAA will supply hot dogs, buns, condiments, paper plates, plastic utensils, and napkins. Medina County Park District regulations FORBID alcoholic beverages. 6:45 p.m. 1st Door Prize Drawing. 7:00 p.m. First Speaker: CAA member Matt Franduto on Digital Astrophotography 7:30 p.m. 2nd Door Prize Drawing. 8:00 p.m. Second Speaker: Observatory Director for Astronomy Club of Akron Ray Paul on the Telescopes at Kitt Peak 8:30 p.m. 3rd Door Prize Drawing. 9:00 p.m. CAA member Steve Spears will point out some interesting features of The Sky To- night 10:00 Star party. p.m. Observe through the CAA Observatory Telescopes or bring your own telescope. For more information, please contact: Lynn Laux 440-846-0966 firstname.lastname@example.org or Les Fox 440-746-0721 email@example.com The Observer July 2005 16 Maps and Directions to the CAA Observatory and Letha House Park The CAA Observatory in Letha House Park is lo- cated in Southwestern Medina County. See the above maps to plan your best route. A good route from the Western Cleveland suburbs is: 1. I-480 west to Ohio 10 west. 2. Ohio 10 west to Ohio 83 south. 3. Ohio 83 south to Spencer Lake Road. 4. Turn right onto Spencer Lake Road (west). The entrance to the Letha House Park (Field) is lo- cated on Richman Road. The entrance to the CAA Observatory and the Letha House Warm Up Room (pole barn) is located at 10311 Spencer Lake Road, just past Richman Road, (at the top of the hill).