SEP 2 4 1994

National Capital Astronomers, Inc. (703) 841-4765 Washington, DC (301) 320-3621

Volume LIII, Number 2 October, 1994 ISSN 0898-7548

George Wetherill to Speak on "The Peekskill , October 9, 1992, Video Observations: An Orbit Determination" by Harold Williams

The next meeting of the National find one, keep it and dispose of it as contains more than 165 entries. He is Capital Astronomers will be held on you wish; they are worth real money. a member of the National Academy Saturday October 1 at 7:30 P.M., in of Sciences and has won numerous the Lippsett Amphitheater, Room George heard of the video tapes. honors from many learned societies. lC114, of the Clinical Center CCN had one from Raleigh, North He is a member, and in fact a fellow, (Building 10) at the National Insti- Carolina. Washington Metro News in many societies including the tutes of Health (NIH). George 4 WRC had one from someone in American Geophysical Union, Me- Wetherill of the Department of Ter- Virginia near the Potomac who was teoritical Society, Geochemical So- restrial Magnetism (DTM) of the out partying with friends (one of the ciety, International Astronomical Carnegie Institution of Washington few nonfootball videos). The long- Union, American Astronomical So- (CIW) the oldest nonprofit research est duration track, around 30 sec- ciety. He has also been an officer in foundation in America, will speak onds, was from Johnstown Pennsyl- most of these societies at some time. on "The Peakskill Meteorite, Octo- vania. George said that he started to He has been associate editor or edi- ber9, 1992, Video Observations: An collect videos to compute the orbit tor of the Journal of Geophysical Orbit Determination." On October because he came to the conclusion Research, Annual Review of 9, 1992 at 7:50 P.M., on a Friday that, ifhe didn't do it, perhaps no one and Planetary Science, Meteoritics, night when high school football else would. He collected fifteen vid- and Icarus. He has been an advisor to games were being video taped by eos with some of the fireballs of NASA, NSF, NAS, NRC, and other parents, coaching staffs, and local which seven videos proved to be numerous organizations on commit- television stations, a fireball ap- good for astrometric orbit determi- tees and panels. His employment peared over the United States visible nation. This is one of the few mete- and professional experience stretch from perhaps Texas to New Jersey orites that has struck the earth that from Radar Technician in the U.S. where it was cloudy. It struck a we now actually have an orbit back Navy during the Second World War women's carin Peekskill, New York out into space. It became visible at an to staff member at DTM several and the meteorite was recovered - altitude of 80 kilometers above the times and director ofDTM. He was 12.6 kilograms. Rumor has it that the earth. a faculty member and chairman of women sold the car to a museum for departments at UCLA. He was a around $7,000 dollars and the mete- George Wetherill is a geophysicist visiting professor at Cal Tech. All of orite for around $50,000. In America and planetary scientist whose publi- his higher education degrees are (home of the brave and chaotic), cation list, excluding abstracts, book from the in belong to the finder or reviews, and other minor publica- perhaps landowner or renter. If you tions, is itself 15 pages long and See WETHERILL, Page 6 October Calendar

The Public is Welcome!

Saturday, October 1, 1994, 5:30 PM - Dinner with McKinley Hall Basement. Information: Jerry Schnall, the speaker at the Athenian Plaka Restaraunt (7833 202/362-8872. Woodmont, Bethesda) before the monthly meeting. Friday, October 7, 1994, 11:30 PM - Earth Night Reservations are for 5:30PM sharp. 1994: "The Autumn Sky, Nocturnal Nature, and Fall Saturday, October 1,Night - October's best night for Foliage." Smithsonian Resident Associate Program for dark-sky observing and "absorbing" ("- (SRAP), Overnight Studay Tour (SRAP Code: 525- dark" paractically all night long). So my firends, crawl 723), at Shennandoah National Park's Big Meadows out of thine cocooning hovels, flee the glowing fun- on Virginia's Skyline Drive. If postponed due to bad goid mass of urbania, and get thee to the night country, weather, alternative date is following Friday, October where thou can personally experience planet Earth for 14, same time. Information and cost: 202/357-3030. what she truly is: a precious ark of life, plying the (See article in Star Dust, 1993, September, p. 4.) wine-dark sea ofSpace. To encouraging you, several relatively light-pollution-free sities are available for Friday, October 7, 1994 - Open House at Hopewell NCA members's use. Information: Daniel Costanzo, Observatory. See the boxed item on page six for more details and directions. 703/841-4765. Saturday, October 8,19949:00 PM - "Exploring the Mondasys, October 3,10,17,24, and 31, at 7:30 PM Sky" telescope viewing at the open field in Rock Creek - Public nights at U.S. Naval Observatory (USNO), in Park nearest to the Nature Center. NCA members Northwest Washington, D.C. (off Massachusetts Av- please bring telescopes. For more information, call enue). Includes orientation program on USNO's mis- John Lohman, 703/820-4194 sion, viewing of operating atomic clocks, and glimpse through the finest optical telescopes in the Washing- Thursdays, October 13,20,27 and Nomber 3,1994, ton-Baltimore region. Information: USNO Public 7:00 PM - Daniel Costanzo (NCA), "Astronomy Affairs Office, 202/653-1541. O!O!O!: Life, The Universe & Everything (In Be- tween)." A four week adult education course at Ar- Tuesdays, October 4,11,18, and 25, at 7:30 PM- lington Planetarium. Information and cost: 703/358- Telescope making classes at Chevy Chase Commu- 7200. nity Center, Connecticut Avenue and McKinley Street, NW. Information: Jerry Schnall, 202/362- Saturday, October 14, 19949:00 PM - Open nights 8872. with NCA's Celestron 14-inch (0.36 meter) telescope at Ridgeview Observatory, south of Alexandria at Wedenesday, October 5 - "Sky Watch" column by 6007 Ridgeview Drive (off Franconia Road between Blaine P. Friedlander, Jr. appears in The Washington Telegraph Road and Rose Hill Drive). Information: Post "Style" section. It lists many other events for the Bob Bolster at 703/960-9126. month. Thursday, October 15, 1994 - Next deadline for all Thursday, Friday, and Saturday, October 6, 7, and submissions to November Star Dust. Send to Gary & 8, Early Evening Twighlight - Moon at her conve- Alisa Joaquin, Editors at 7821 Winona Ct., niently beautiful best asa thin waxing crescent, bathed Annandale, VA, 22003, or send an ASCII file via E- in Earthshine, gracing the early evening twighlight Mail at 71561.1747 @compuserve.comorfax to 703/ sky: "the old Moon in the young Moon's arms." You 658-2233. can enjoy this spectacle even from the light-polluted heart of urbania. So, go outside, take a look, and Saturday, October 29,1994, Night - October's sec- celebrate the beginning of a new "moonth" (a new ond best night for dark-sky observing and "absorbing" lunation). ("Moon-dark" until around Midnight). See October 1 listing. Fridays, October 6, 13,20, and 27, at 7:30 PM - Telescope making classes at American University, CALENDAR, continues on Page 3

Page 2 CALENDAR, from Page 2

Wednesday, November 2,1994 - "Sky Watch" col- Saturday, November 5, 1994 - November's best umn by Blaine P. Friedlander, Jr. appears in The night for dark-sky observing and "absorbing" Washington Post "Style" section. It lists many other ("Moon-dark" practically all night long). See October events for the month. 1 listing.

Saturday, November 5, 1994, 11 :00 AM to 4:00 PM Saturday, Sunday, and Monday, November 5, 6, - The NCA and the Smithsonian Institution's National and 7,1994, Early Evening Twighlight - Moon at her Air and Space Museum (NASM) present "Binoculars! conveniently beautiful best. See October 6, 7, and 8 Telescopes! Astronomy!: A Free Consumer Presenta- listing. tion." NASM, Briefing Room (see accompanying article). Other events, objects, and phenomena too numerous to mention here are listed in the publications Sky & Saturday, November 5,1994- The November NCA Telescope, the Astronomical Calendar 1994, and the meeting will feature Carol Ann Grady speaking about Observer's Handbook 1994, plus numerous software "The Beta Pictoris Phenomenon in Herbig Ae/Be and packages. NCA members can purchase all these at a A-shell Stars." discount. To join NCA, use membership application on page seven:

The , Shoemaker-Levy 9, Strikes Reviewed by Harold Alden Williams

On Saturday September 10, 1994 at the view about half of the time. The of the entire campaign as well as the National Institutes of Health situation is further complicated by being one of the six principal inves- (NIH), Rob Landis of the Space the telescopes' not being able to look tigators, whom all also had many co- Telescope Science Institute (STScI) too near the Sun, Moon.aad Earth. investigators. Hal Weaver was also spoke on the Comet Shoemaker- The telescope is orbiting Earth every Rob's branch chief when he was Levy 9' s Striking Jupiter. Rob first 90 minutes, so not only is pointing with moving targets. With Hubble's told us a little about his Hubble complicated but so is the data path spherical aberration problem before Space Telescope (HST) work expe- that takes the information from the repair, bright moving targetlike rience. When hefirstarrived in 1992 telescope to STScI in Baltimore. planets needed fewer extensive at the STScI his primary responsi- Landis was recently transferred into spherical aberration deconvolutions bilities were in the Science Planning the newly created special projects of because of their high signal-to-noise Branch in the near-term planning the Public Outreach Office at STScI. ratio. The importance of the moving schedule ofHST Observations. Fol- targets group increased, even lowing the highly successful servic- He showed us a few photographs though originally Hubble could not ing mission, he was transferred to (before and after) demonstrating the look at moving targets. It soon was the Moving Targets (planets, aster- successful repair of the Hubble and used to for planetary science that oids, , and satellites of plan- mentioned Newsweek and Time would not have been done without ets) Group in time to prepare for the hounding STScI for photos of the the mirror problem. HST Jupiter comet collision cam- repair mission, which when success- paign. He explained how observing ful was eclipsed on the cover by The comet was photographically a moving target (one that does not articles about Tanya Harding and discovered on March 24, 1993, by stand still with respect to the fixed Nancy Kerrigan - scandal evi- the team of Carolyn and Gene Shoe- stars) is different from observing dently sells more magazines than maker and David Levy with the stars and galaxies when one can use successful space missions. Then he 0.46-meter Schmidt telescope at Mt. the guide stars in the pickle-shaped listed the six principal investigators Palomar. On the original image it off-axis Fine Guidance Sensor. He of the comet collision who were appeared "squashed." Subsequent pointed out the efficiency problems given 114 orbits to observe the confirmation photographs at a larger of observations that are not near the comet (that amounts to 7.125 days of scale taken by Jim Scotti with the poles of the telescope's orbit around observation, according to my calcu- Spacewatch telescope on Kitt Peak the earth, because the earth occults lation). Hal Weaver was the leader See COMET, on Page 4

Page 3 COMET, from Page 3 until July 22. Until the impacts science. He was also a planetarium started, there was major uncertainty specialist at Abrams Planetarium for showed that the comet was split into as to whether any visible marks a number of years (when he was many separate fragments. The dis- would be made in the cloud tops of much older than five) and is cur- covery of this comet was a seren- Jupiter. The uncertainty was caused rently writing a planetarium pro- dipitous product of the Shoemakers' by the fact that even the Hubble gram with the Carnegie Science long term search for Apollo objects Space Telescope could not resolve Center in Pittsburgh, titled (near-Earth objects). Fortunately, the solid nuclei of the comet but "Through the Eyes of Hubble." for us, this object is not an Apollo could see only the diffuse debris trail object. In late May, 1993, it was (the coma) around the nuclei. The As for the beautiful slides, transpar- apparent that this object was going uncertainty in size was at least a encies, and video he showed us (if to hit a planet.Jupiter. In fact, retro- factor of one hundred. Further con- you weren't at the meeting you will spective orbital solutions indicted cern of another factor of around 5 have to wait for the slides to be made that this comet was tidally disrupted were caused by not knowing the available), go to the planetarium that by Jupiter's gravity on July 8, 1992, comet's density or real composition. is featuring the show, or download when it passed well within Jupiter's As most of us now know, the comet them yourself over the Internet. He Roche limit and only 21,000 kilome- turned out to be on the upper end of not only showed us pictures from ters from Jupiter's surface; less than everybody's expectations and it put Hubble, but also from the Keck tele- a third of a Jovian radius. It is on a proper show to commemorate scope in Hawaii and from other ob- thought that this comet had orbited the twenty-fifth anniversary of the servatories around the world. I my- Jupiter for a few decades, having Apollo moonlanding by humankind. self have downloaded more than 40 been captured at some point in the Rob even showed us one slide with images from ftp.stsci.edu. past. Its very eccentric orbit took it real physics (equations) relating the one third of an astronomical unit energy of the collision to the density As usual we are indebted to NIH and away from Jupiter every two years. and size of the comet to NCA member Jay Miller for ar- The fragments, which were spread ranging to meet at NIH, where he out in a rough line three Earth- Rob majored as an undergraduate in works, and double indebted because Moon distances would strike the physics at Michigan State Univer- of the use of the nice Lippsett Am- back side (the side not facing the sun sity, but it was a visit to Abrams phitheater room necessary for good and the Earth) at the same approxi- Planetarium when he was five that video projection. mate latitude on Jupiter from July 16 first got him excited about learning

Capital Science Lectures 1994-1995 Each year, the Carnegie Institution of Washington invites eight distinguished scientists to speak about new developments in their fields to general audiences. These illustrated presentations are free and open to the public. Tuesday, October 18, 1994,6:30 PM Tuesday, March 28,1995,6:30 PM Dean Hamer - "Genes and Human Sexuality" Haresh C. Shah - "Earthquake Risk Management- A Global Perspective" Tuesday, November 15, 1994,6:30 PM Thomas R. Cech - "RNA Catalysis and the Origins of Tuesday, April 18, 1995,6:30 PM Life" Virgil L. Sharpton - "Large Body Impacts in The History of Earth" Tuesday, December 13~ 1994, 6:30 PM Eugene Shoemaker - "When Comets Meet Planets" Tuesday, May 16, 1995,6:30 PM Wendy Freeman - "Measuring the Expansion of the Tuesday, January 31, 1995,6:30 PM Universe" Michael Robinson - "The Joy of Bology: A Life of Research into Animal Behavior" For more information on the 1994-95 Capital Science Lec- Tuesday, February 28, 1995,6:30 PM tures or on the Carnegie Institution of Washington, call Ms. Roald Sagdeev - "Chaos in Real Systems: The Limits Sherrill Berger, 202/265-2752. To optain tickets by mail, of Predictability and Control" call 202/328-6988.

Page 4 "Binoculars! Telescopes! Astronomy!: A Free Consumer Presentation" -NCA Volunteers Needed

by Daniel J. Costanzo NCA Public Relations Officer (PRO)

Purchasing a pair of binoculars or a binoculars and telescopes. After a planet's most popular museum is a telescope for astronomical use isjust basic discussion and demonstration, great honor. Yet, for this presenta- like any other product: let the buyer they will offer hands-on experience tion to be a success, we need NCA beware. Advertisements promise with representative types of optical volunteers with interest, expertise, the Universe, but barely deliver the equipment. and/or sample astronomical instru- Moon. A "bargain" is just as risky as ments. All types of sample tele- any other "great deal", but with This year's presentation will be held scopes and binoculars are needed, proper selection, use, and care, as- in NASM's Briefing Room located plus sample accessories, atlases, tronomical instruments can provide on their lowest floor. To reach it, books, periodicals, and catalogs. a lifetime of service and enjoyment. first enter NASM' s Main Hall, from Those who want to bring portable either entrance. Next, go to the infor- . computers for demonstrating appro- Yet, before every Christmas, NCA mati on/security desk and take the priate software are also welcome. inevitably receives numerous in- "down" escalator located right be- NASM can arrange free parking in quiries from the public about choos- hind this desk. The Briefing Room is their basement lot for any volun- ing astronomical instruments for at the bottom of the escalator. The teers. The presentation ends early gifts. In addition, after every Christ- presentation starts shortly after enough to allow NCA members mas, NCA receives more inquiries NASM's "Monthly Sky Lecture" plenty of time to attend that about use and care of instruments ends. No reservations are necessary. evening's monthly NCA dinner and received as gifts. Unfortunately, not Nor is it necessary to arrive by 11:00 meeting. everyone knows of NCA's free ex- AM. Just show up any time between pert help. Sadly, much of this other- 11:00 a.m. and 4:00 pm. To volunteer, please contact Daniel wise fine (and not so fine) equip- Costanzo (NCA) at 703/841-4765. ment ends up in the proverbial attic For more information about attend- Your assistance will be greatly ap- or trash heap, souring more citizens ing, contact Cheryl Bauer (NASM) preciated by NCA, NASM, and the to ever personally experiencing the at 202/357 -1529. Please tell friends, public at large. Your help is needed wonders of the Universe. Ulti- colleagues, and neighbors about it. now more than ever. Besides gain- mately, this could translate into cur- For only through maximum public- ing new NCA members, your time tailment of already tenuous taxpayer ity will NCA reach the largest audi- and effort may even inspire a future support for space technology, as- ence. Nobel Prize winner. NCA already tronomy, and related sciences. If helped at least one young scientist only NCA could have caught them This presentation is a great opportu- reach that goal - Walter Gilbert, co- in time. nity for NCA to continue our fruitful winner of the 1980 Nobel Prize in relationship with NASM injoint ser- Chemistry, started out as an NCA In an attempt to break this tragic vice to science and society. Junior member. It can happen, cycle, several years ago NCA's NASM's assistance in allowing thanks to NCA. Robert H. McCracken started an- NCA to hold this event in the nual free public presentations timed for early in the Christmas buying Montgomery College's Public Planetarium season. Now, after a two year hiatus, NCA has arranged with the Smithsonian Institution's National Exciting public planetarium programs are offered at Takoma Park's own plan- Air and Space Museum (NASM) to etarium. Astronomy is one of the few sciences accessible to any inquiring mind. hold this presentation on Saturday, All programs begin at 7:00 p.m. There is no admission charge. November 5, from 11:00 a.m. to 4 :00 p.m. Continuing the long tradi- Saturday, October 22,1994 - "Splendors of Star Formation." tion of these presentations, NCA's experts will provide guidance, dis- The planetarium is located on Fenton Street on the Takoma Park campus of pel myths, and equip the uninitiated Montgomery College. It is attached to the Science South building on the ground to wisely choose, use, and care for level and has a conspicuous silver-colored domed roof.

PageS WETHERILL, from Page 1 Important Numbers physics except his first one, a Ph.B. in general studies. His writing is so For Information outstanding that it has been included in literature anthology collections. Smithsonian Sky Watchers' Report His lectures are extremely engaging. Non-technical information recording on astronomical events, objects, and His use of poetry in his writing is phenomena in the Washington, D.C. region's sky. Updated weekly. 202/357- well known. His Who's Who in 2000 America sketch ends with "Seek him Sky & Telescope's "Skyline" that maketh the Pleiades and Orion, Moderately technical information recording on latest in space technology, and turneth the shadow of death into astronomy, and related sciences. Updated weekly, or sooner if necessary. morning" (Amos 5:8). 6171497-4168

His interest in science predates the sixth grade, but his specific interest McDonald Observatory's "Star Date" in meteorites, a reoccurring theme Non-technical information on space technology, astronomy, and related throughout his life, dates to Elise subjects. Broadcast weeknights, around 8:00 PM, by listener-supported public Olivier, a pretty sixth-grade girl. radio station WAMU PM 88.5 Elise's fatherwasCharlesP. Olivier, who wrote the only book on meteors u.S. Navel Observatory's Time Service worth reading from Schiaparelli's Accurate Eastern Time (in 24 hour mode) and Universal Time given every few nineteenth century until 1923. seconds. Excellent for synchronizing clocks and watches. 202/653-1800 George wanted to impress Elise so he bought the professor's book at a remaindered sale. He attempted to NOAA "Space Weather" Indices converse with Elise about her Highly technical, but quite useful recording on Solar activity and its effect on father's book, but she was not very Planet Earth. From the National Oceanic and Atmospheric Administration interested in the book or George. (NOAA). Updated every three hours. 303/497-3235 (anytime) or WWV at She did tell her father about a nerdy 2.5,5, to, 15, and 20 MHz (18 minutes after every hour) boy in her class that had read his book, whereupon the professor Weather, Sunrise/Sunset, & UV Index called George up and gave him a list Recording of latest weather forecast out to five days, plus SunriselSunset of all of the mistakes and revisions in times, and forecasted Solar ultraviolet radiation index. Covers Washington, the book. George told me that this DC and vicinity. taught him a useful lesson: that pro- fessors make mistakes, too.

Hopewell Observatory Open House

NCA members, families, and guests are invited to the autumn open house at Hopewell Observatory on Friday evening 1Saturday morning October 7/8 to observe the autumn sky, numerous Messier objects, and Saturn. Sunset will be at 18:44, astronomical twilight ends at 20: 13, and the Moon sets at 20:32. If you wish, come any time after 6:00 pm and bring your prepared picnic dinner. Coffee, tea, and cocoa will be provided by the Hopewell Corporation.

Directions: (1) From the Beltway (1-495) go west on 1-66 25 miles to Exit 40 at Haymarket onto u.S. 15. (2) Turn left on U.S. 15 at the end of the exit ramp. (3) Go 0.3 mile to traffic light, turn right onto Va. 55. (4) Go 0.8 mile to Antioch Road (Rt. 681) and turn right. (5) Go 3.2 miles to the end of Antioch Road and turn left onto Waterfall Road (601). (6) Go one mile and bear right onto Rt. 629. (7) Go 0.9 mile on 629 to narrow paved road at right with an orange pipe gate. (Directly across from an entrance gate with stone facing.) (8) Turn right through pipe gates, go 0.3 mile to top of ridge, and around the microwave station. (9) Continue on dirt road through the white gate and woods a few hundred feet to the observatory. Park along the road short ofthe buildings.

The event will be cancelled ifit is raining or hopelessly cloudy. For further information call (703) 960-9126 or (301) 320-3621.

Page 6 National Capital Astronomers, Inc. Serving Science & Society Since 1937 NCA is a non-profit, membership supported, public-service corpo- Consumer Presentations on selection, use, and care of binocu- ration dedicated to advancing space technology, astronomy, and lars and telescopes, provide myth-breaking information, guid- related sciences through information, participation, and inspira- ance, and demonstrations for those contemplating acquiring tion, via research, lectures, presentations, publications, expedi- their first optical instrument for observation. tions, tours, public interpretation, and education. NCA is the Dark-Sky Protection efforts educate society at large about the astronomy affiliate of the Washington Academy of Sciences (WAS). serious environmental threat oflight pollution, plus seek ways All are welcome to join NCA. For information, call NCA: (301) and means of light pollution avoidance and abatement. NCA 320-3621. is an organizational member of the International Dark-Sky Association (IDA), and the National Capital region's IDA SERVICES AND ACTIVITIES: representative. Monthly Meetings feature presentations of current work by re- Classes teach about subjects ranging from basic astronomy to searchers at the horizons of their fields. All are welcome; there hand-making a fine astronomical telescope. NCA's instruc- is no charge. See monthly Star Dust for time and location. tors also train educators in how to better teach astronomy and NCA Volunteers serve as skilled observers frequently deploying related subjects. to many parts of the National Capital region, and beyond, on Tours travel to dark-sky sites, observatories, laboratories, muse- campaigns and expeditions collecting vital scientific data for ums, and other points of interest around the National Capital astronomy and related sciences. Expeditions include observa- region, the Nation, and the World. tion of occultations and eclipses, plus discovery results on Discounts are available to members on many publications, prod- asteroids and variation in the Solar radius. Locally, NCA ucts, and services, including Sky & Telescope magazine. volunteers assist at international scientific conferences, judge Public Sky Viewing Programs are offered jointly with the science fairs, and interpret astronomy and related subjects National Park Service, the Smithsonian Institution, the U.S. during public programs. Naval Observatory, and others. Discussion Groups exchange information, ideas, and questions on NCA Juniors Program fosters children and young adults inter- preselected topics, moderated by a member or guest expert. ested in space technology, astronomy, and related sciences Publications received by members include the monthly newsletter through discounted membership rates, mentorship from dedi- of NCA, Star Dust, and an optional discount subscription to Sky cated members, and NCA's annual Science Fair Awards. & Telescope magazine. Fine Quality Telescopes up to 14-inch (36-cm) aperture are NCA Information Service answers a wide variety of inquiries available free for member's use. NCA also has access to about space technology, astronomy, and related sciences from several relatively light-pollution-free sites in Maryland and the public, the media, and other organizations. Virginia.

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Page 7 Getting to the NCA Monthly Meeting Subway Riders - From Medical Center Metro Stop: Walk down the hill, pass the bus stops and tum right at I 495 Beltway the anchor (onto Center Drive). Continue uphill to '> National Institutes of Health building 10, the largest building on campus. Also, the J2 bus line connects the Bethesda (7: 16 PM) and NIH (7:23 Pilk:n::~::nSin Ave.) ~§u~ North Dr. PM) Metro stops with Building 10 (7:25 PM). ~ Center Dr. ~ I 31 I Atbenian PI aka - Take Wisconsin Avenue toward ... CD Bethesda and bear right onto Woodmont (or take the next ::: 10 4 Parking 2 right onto Battery Lane). Follow Woodmontto St. Elmo c:s~" Building ~0 0 (3 blocks south of Battery) and look for the restaraunt on Clinical Center your left (between St. Elmo and Fairmont, address 7833 Woodmont). Parking may be found on Woodmont and Enter building 10 from North, in a local parking lot (the restaraunt claims free parking). Main Entrance; pass through the double doors to the bank Seats are not guaranteed after 5:30. of four elevators. Go to the 9th floor. The Bunim Room is just behind the glass partition South Dr. r;';l across from the elevators. " ~ _ . . Medical Center '-.---. Mee'tl'ng'. Metro Stop»' , (Red Line) Dinner ~ , Battery Lane , <$,,/s=

St.Elmo'~~',D'~ Athenian Plaka - - ~ ~ . Fairmont

National Capital Astronomers, Inc. If undeliverable return to NCA c/o Leith Holloway, Suite #M-IO 10500 Rockville Pike Rockville, MD 20852-3331

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