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OCTOBER 2012 OCTOBER 2012 OT H E D Ebn V E R S E R V E R

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THE DENVER OBSERVER OCTOBER 2012 OCTOBER 2012 OT h e D eBn v e r S E R V E R ASTRONOMY DAY ALERT! Calendar DIVERSE NEIGHBORS 8.............................. Last quarter moon Discovered in 1787 by William Hershel, the Bubble Nebula, (NGC 7635 or Caldwell 11) is an H II region emis- 15........................................ New moon sion nebula in the constellation Cassiopeia, about 7 to 10 thousand light-years from Earth. The nebula is in a huge molecular cloud which contains the expansion of the bubble as it is formed by a hot,10-40 solar mass 21........................... First quarter moon star. This widefield image also shows the dense open cluster Messier 52. Taken with a modified Canon 450D 29........................................ Full moon through an AT8IN 8-inch, f/4 Newtonian. 21 RGB exposures totalling 107 minutes. Image © Darrell Dodge Inside the Observer OCTOBER SKIES by Dennis Cochran Canadian told me that Venus and Regulus (Leo’s Above Fomalhaut and a bit to the right lies the Helix President’s Corner.......................... 2 A alpha star), will collide on the 3rd of this month. Nebula, the largest appearing exploded star in our sky. At Actually, they’ll get really close together but Venus 1/2 degree in diameter, it’s the size of the full moon, but Society Directory............................ 2 will not occult Regulus, nor vice-versa. At least I hope it’s rather faint, even in larger scopes. The gorgeous Schedule of Events.......................... 2 not, because the star is rather farther away than the Hubble photos of it are full of intriguing detail. If you planet. You may not get this Observer in time to see that have access to a Hubble Heritage book, look for it whilst DAS Job Jar................................... 4 conjunction since this is essentially a mid-month publi- imagining you’re in Captain Picard’s ship diving through cation. You’ll have to look for Piscis Austrinus instead, a the middle of the Helix. The Night Sky Network................... 5 shapely constellation southeast of Capricorn, about on a Over at Capricorn we found some globular clusters NASA’s Space Place......................... 5 level with Sagittarius but way east of it. The Southern last month. There are a couple more we could mention Fish is findable because of its bright alpha star Fomal- down under its wide “Vee.” M30 is on the left side below Colorado Astronomy Day................ 6 haut (which means “mouth of the fish” in Arabic), at the the left end of the “Vee,” while tiny M75 is in an analo- east end of the shape of a fish swimming east. And if gous spot on the right side; see the October Sky & Tele- Beginners Bits................................ 7 you’ve ever wondered where to find Grus the Crane, it’s scope, page 45. Both of these clusters have concentrated below Piscis Austrinus. star-like appearances. Later the Pegasus/Andromeda The City Dark Screening................ 7 The fish may be Venus in a Greek legend—gods were mega-constellation is looming in the east but we’ll dis- The “Running Man”.......... back page changing into animal shapes during one of their wars. cuss them next month. Continued on Page 3 The Denver Astronomical Society One Mile Nearer the Stars Page 1 THE DENVER OBSERVER OCTOBER 2012 PRESIDENT’S CORNER by Ron Pearson Society Directory There is precious little hope to be got out of whatever keeps us doing outreach events and light pollution education. As President: “ industrious, but there is a chance for us whenever we cease Darrell wrote about last month, several teams of DAS Ron Pearson (303) 670-1299 work and become stargazers.(—H. M. Tomlinson members have already assisted the National Park Serv- [email protected] I hope you had a good month of star gazing in Sep- ice in its BioBlitz Study which targets light pollution Vice President: Lisa Judd (626) 487-8515 tember. With the reduced haze from the wildfire smoke and its effects on the Front Range. [email protected] for a few nights, I was finally able to see the Milky Way This year we close out October with our Annual Secretary: a couple of times from my yard. I heard that the Okie- DAS Auction of your used, or new, “astronomy stuff.” Dennis Cochran (720) 870-0465 Tex star party was a success, and it was reported that The auction supports astronomy education and out- Treasurer: Brad Gilman (720) 488-1028 the new wind and photon screens that were put to use reach because the proceeds go to our Van Nattan- at our dark sky site are a “howling” success. October Hansen Scholarship Fund for students in astronomy or usually brings us another good month of observing the physical sciences. By bringing your used or re- Executive Board Members before the wild ride of winter weather sets in. Autumn purposed astro-equipment you are helping educate the is also our busiest month of outreach because of Colo- next generation of astronomers and scientists. So, don’t Chuck Carlson Ron Hranac rado Astronomy Day (CAD) at Chamberlin Observa- let the trash-talking auctioneer lower your bids for Jack Eastman Naomi Pequette tory and the Denver Museum of Nature & Science some great buys on just about any astro-related hard- Joe Gafford David Shouldice (DMNS). We also hope to be doing some good out- ware, software, books or what-not. You can put a mini- Chuck Habenicht Dan Wray reach events for schools and other organizations on mum bid on your stuff and a minimum of 10% of the President Emeritus, Larry Brooks those early evening nights now that the kids are back in sale goes to the scholarship fund. This year the DAS schools and fired up for science. However, in order to will be auctioning several of its assets that get little use have successful outreach events, including CAD, we and can be put to better use in your hands while raising Committees need you to participate and volunteer for a night or a scholarship funds. I discussed some of these in my arti- few hours. Without you we shrink back into our own cle last month on the “Adopt-a-Telescope Project.” A Van Nattan-Hansen Scholarship Fund: little views of the sky and leave the kids (or adults) to go brief list here includes: Tim Pimental (Chair) PO Box 100621 back to their video games after briefly wondering, • Losmandy G-11 Tripod Denver, CO. 80250-0621 “What is that up there?” The DAS is also taking a • JMI Wheeley-Bar Assembly (for the G-11 EGK Dark Site Committee: stronger stand in educating folks about the effects of mount and tripod) Darrell Dodge, Interim Chair light pollution and the simple ways it can be prevented. • Celestron C-5 (5-inch SCT telescope) with CG-3 Email: [email protected] IDA Representative: We have acquired a full licensed German equatorial mount, case and accessories, in Dr. Robert Stencel version of the documentary like-new condition. Email: [email protected] The City Dark and hope to • Celestron 8-inch SCT telescope—early or mid- begin showing it at public 80s vintage classic orange tube with wedge, tripod venues shortly. Watch for and trunk. Volunteers or Appointed Representatives coming announcements • Coulter Odyssey 8-inch “Red Tube” Dob- near you! You can do more sonian telescope in very good condition, with than complain about those accessories. ALCor: oil rig lights at our dark sky site, Darrell Dodge (303) 932-1309 Newsletter: you can be part of the solution by Continued on Page 4 Editor: Patti Kurtz (720) 217-5707 Email: [email protected] The Observer is available in color PDF DAS SCHEDULE format from the DAS website. Website: OCTOBER NOVEMBER Darrell Dodge Email: [email protected] 5 E-Board Meeting at Chamberlin (Be- 2 General Membership Meeting at D.U.’s IT Coordinator: Scott Leach gins at 7:30 P.M.) Olin Hall: Members Show ‘n Tell (Be- 12-14 EGK Dark Sky weekend gins at 7:30 P.M.) Librarian: 20 Colorado Astronomy Day at DMNS 4 Daylight Saving Time Ends Phil Klos and Chamberlin Observatory (10 A.M. 9 E-Board Meeting at Chamberlin (Be- DAS Information Line:(303) 871-5172 to 4 P.M.) and Open House (Begins at gins at 7:30 P.M.) DAS Correspondence: Denver Astronomical Society 6:00 P.M.) 9-11 EGK Dark Sky weekend Chamberlin Observatory c/o Ron Pearson 27 DAS Auction at Chamberlin Observa- 11 Veterans Day 2930 East Warren Avenue tory (Setup begins at 11:00 A.M., Bidding 17 Open House at Chamberlin Observa- Denver, Colorado 80210 begins at 1:00 P.M.) tory (Begins at 7:00 P.M.) 31 Hallowe’en 22 Thanksgiving (No Public Night) 28 Penumbral lunar eclipse (At moonset) The Executive Board conducts the business of the DAS at 7:30 p.m. at Chamberlin Observatory. Public nights are held at Chamberlin Observatory every Tuesday and Thursday evenings Please see the Schedule of Events for meeting beginning at the fo&owing times: dates. A& members are welcome. March 13 - April 14 at 8:00 P.M. April 15 - August 31 at 8:30 P.M. September 1 - September 30 at 8:00 P.M. October 1 - March 10 at 7:00 P.M. Costs to non-members are: )3.00 adults, )2.00 children www.denverastro.org Please make reservations via our website (www.denverastro.org, or ca& (303, 871-5172. The Denver Astronomical Society One Mile Nearer the Stars Page 2 THE DENVER OBSERVER OCTOBER 2012 OCTOBER SKIES (CONTINUED FROM PAGE 1) Speaking of exploded stars and their wider-spread cousins the supernova remnants, have you seen the Veil Nebula lately? You probably can’t get it into a single field, so look at the western or eastern part of its interrupted circle shape.
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