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MARCH 2011 MARCH 2011 OT H E D Ebn V E R S E R V E R THE DENVER OBSERVER MARCH 2011 MARCH 2011 OT h e D eBn v e r S E R V E R MARATHON MARCH ON!! Calendar STAY OUT OF THE WATER 4.......................................... New moon Our galaxy abounds with vibrant and colorful supernova remnants. Sharpless 248, in Gemini, certainly 12........................... First quarter moon holds to its moniker, the Jellyfish Nebula. Spawned by a supernova blast some 20,000 years in the past, IC 443 is half-again as large as the full moon and harbors a neutron star at its core. Best captured in h-alpha, 17............................... St. Patrick’s Day Alan Erickson did just that for 100 minutes, coupled with 40 minutes of RGB images with a Quantum Sci- 19......................................... Full moon entific camera on an Astro Physics mount carrying a 7-inch Maksutov-Newtonian telescope. 21................................. Vernal Equinox Image © Alan Erickson 26........................... Last quarter moon Inside the Observer M A R C H S K I E S by Dennis Cochran upiter is going, going . gone, and Saturn is coming and 93. These clusters are the winter analog of the President’s Corner.......................... 2 on strong. Mercury, the “Messenger of the Gods,” gaseous nebulae of Sagittarius in the summer, objects Jdelivers a message to Jupiter in the evening sky on that are well-placed for evening viewing only one quar- Society Directory............................ 2 March 16, passing two degrees north of the big guy. The ter of the year. If you look at M31 on the north side of South Equatorial Belt is an on-again, off-again sight Andromeda or M33 on her south, stop at the Beta star Schedule of Events.......................... 2 that is reported to sometimes appear as a thin strand; of Andromeda in between and then sweep east to the Messier Marathon.......................... 4 What do you see? As if to balance the early setting of similarly-bright Alpha star and continue on towards Jupiter, Saturn rises around 8 P.M. at the beginning of Perseus to find cluster M34. Auriga and his three clus- Banquet Speaker, Naomi Pequette.... 4 the month and by month’s end, at sundown. It be- ters M36-38 are now west of the zenith. Straight west comes decently viewable an hour later. of him are the Pleiades, another sight to reveal to your Spring Banquet Sign-up Form.......... 5 Pegasus dives into the west, drawing Andromeda guests before it sets in the west. with him. To glimpse its great galaxy, observe it early in Farther east one can look halfway between Procyon, NASA’s Space Place........................ 6 the evening in the northwest at the beginning of your the bright star in Canis Minor, now near the meridian, session. Farther east and south, Orion and his dogs are and Regulus, farther east in Leo, to find M67 just above New Astronomer’s Den Chart........... 7 well-positioned. At public star parties you can find the little polygon of stars that represents the head of “Tadpole Nebulae” Photo.... back page M31, maybe, and M42 and Saturn, as well as all those Hydra. Procyon, incidentally, has a faint companion, star clusters we spoke of last month: M41, 46-48, 50 the 2nd-closest white dwarf to the Sun. In case you Continued on Page 3 The Denver Astronomical Society One Mile Nearer the Stars Page 1 THE DENVER OBSERVER MARCH 2011 PRESIDENT’S CORNER by Ron Pearson arch brings us to a quarter turn in our voyage Then in mid-March when the Moon makes it too Society Directory M around the Sun and the time when we can, bright to observe those faint fuzzies, we invite you to join hopefully, dust off our scopes if they’ve been us at our Annual Banquet where we gather to share a President: sitting in a warm house, and start collecting those good meal, swap more tall tales of seeing a faint galaxy or Ron Pearson (303) 670-1299 photons from galaxies and nebulae that left their stars imaging a storm on a planet, or maybe just having [email protected] of origin millions and millions of years ago. In early survived another winter. The dinner is also our Vice President: March, DAS members have their first opportunity to opportunity to hand over DAS officer and e-board Norm Rosling (303) 252-1214 find and observe, in one night, all the brightest and positions to those returning or meet the new faces who [email protected] Secretary: best of those deep-sky objects that were first mapped will be guiding this Society for the next year. This is Bonnie Kais (720) 344-4263 by Charles Messier in the late 1700s. This “Messier followed by a talk about astronomy, and this year our Treasurer: List” of objects includes all the major types of deep sky speaker is a bit more special than past years, because one Brad Gilman (720) 488-1028 objects: Galaxies, planetary nebula, and star clusters, of “our own” long-time Student Members, Naomi both open and globular. The “Messier Marathon” is a Pequette, will be presenting a talk on her recent great opportunity to get out research. Naomi has “grown-up” with the DAS as one of Executive Board Members to our Dark Sky Site and rub our Van Nattan-Hansen Scholars and will soon be taking elbows on crowded pads the next big steps in her career to be a professional Jack Eastman Tim Pimentel with many other DAS’ers astronomer as she completes her undergrad degree at Joe Gafford David Shouldice Frank Mancini with varying levels of DU in June. She is truly ‘running the Astronomy Steve Solon Keith Pool Dan Wray equipment and experience. If Marathon’ in her life which started in high school Ron Mickle, Past President you’ve just started out, it’s a science and math classes. I hope you will all join us in President Emeritus, Larry Brooks great way to really learn “star- hearing Naomi’s talk and congratulating her! hopping” and reading a star Finally, astronomy is all about observing “stuff” up in Committees chart, or learn to use your the sky, from the Messier Marathon to “Fossil new “go-to” computer-driven telescope. Even if you Galaxies,” and in February, March and April, each and Van Nattan-Hansen Scholarship Fund: don’t find all the M-objects in one night, you’ll take a every one of you is invited to make observations as part Ron Pearson (Chair) big step in learning the sky and using a telescope or of the Global Night Sky Watch. This is a global P.O. Box 150743 Lakewood, Colorado 80215-0743 binoculars. You can make a giant leap toward an M-List campaign of observing the night sky from your EGK Dark Site Committee: Observers award or just find a few objects and really location and estimating how bright are the faintest Darrell Dodge, Interim Chair observe them for details and try out different eyepieces stars you can see to measure light pollution. Our Public Email: [email protected] or scopes. As in all running marathons, there are those Night operators have been asked to participate in this IDA Representative: Dr. Robert Stencel who run the race to set new records, and “runners” that at Chamberlin Observatory with the public, but it is Email: [email protected] walk or run at a slow pace to show they can do it or something we can all do from our backyard or porch. If Student Astronomy Chair: enjoy being part of the race and pushing themselves to we log our observations with the NASA Night Sky Naomi Pequette (Chair) new a personal best. Network, the DAS can be awarded with Sky Quality Finance Committee Frank Mancini (303) 663-5263 Continued on Page 3 Volunteers or Appointed DAS SCHEDULE Representatives ALCor: MARCH APRIL Darrell Dodge (303) 932-1309 Newsletter: 4-5 EGK Dark Sky weekend (Messier 2 EGK Dark Sky weekend (Alternate Editor: Patti Kurtz (720) 217-5707 Marathon weekend!) See Page 4. Messier Marathon weekend) Email: [email protected] Proofing, writing, patience and New 12 Open House at Chamberlin (Begins at 9 Open House at Chamberlin (Begins at Astronomers Den charts: Steve Solon 6:00 P.M.) 7:30 P.M.) Saturn viewing! The Observer is available in color PDF 19 DAS Spring Banquet and Inauguration 15 DAS General Membership meeting format from the DAS website. of Officers (Takes the place of the Gen- (Begins at 7:30 P.M.). Website: eral Membership meeting(Begins at 22 E-Board Meeting at Chamberlin (Be- Darrell Dodge Email: [email protected] 6:00 P.M.). gins at 7:30 P.M.) Chad Warwick, IT Specialist 25 E-Board Meeting at Chamberlin (Be- Librarian: gins at 7:30 P.M.) Phil Klos DAS Information Line:(303) 871-5172 DAS Correspondence: Denver Astronomical Society Chamberlin Observatory c/o Ron Pearson Public nights are held at Chamberlin Observatory every Tuesday and Thursday evenings 2930 East Warren Avenue Denver, Colorado 80210 beginning at the fo'owing times: March 9 - April 14 at 8:00 p.m. The Executive Board conducts the business of the April 15 - September 1 at 8:30 p.m. DAS at 7:30 p.m. at Chamberlin Observatory. Please see the Schedule of Events for meeting September 2 - March 8 at 7:00 p.m dates. A( members are welcome. Costs to non-members are: )3.00 adults, )2.00 children Please make reservations via our website (www.denverastro.org, or ca' (303, 871-5172. www.denverastro.org The Denver Astronomical Society One Mile Nearer the Stars Page 2 THE DENVER OBSERVER MARCH 2011 MARCH SKIES (CONTINUED FROM PAGE 1) have a radio telescope, two pulsars hang around Hydra’s head, one just north of its Delta star and the other a head’s width southwest.
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