Astronomy 2018-12.pdf

MyScienceSHuge selection!Books Magazines Globes&Maps Posters Downloads And more!P29014SHOP NOW FORSCIENCE&ASTRONOMY PRODUCTSWIN a signed copy of MISSION MOON 3-D by David J.Eicher and Brian May p.6APOLLO 50 See the Moons surface in 3-D p.18 Jim Lovell on the fight of Apollo 8 p.28 Brian Mays custom-made stereoscopic views p.18th ANNIVERSARY PACKAGEEXCLUSIVE The worlds best-selling astronomy magazineDECEMBER 2018 www.AVol.46 Issue 12SHADOW PLAY ON THE MOON p.48WE TESTMEADES NEW ASTROGRAPH p.58EXPLORE deep-sky gems p.44The art and science of astroimaging p.52BONUS ONLINE CONTENT CODE p.4Evostar doublet lineSave up to$230Starlux Mak-Newt AstrographSave$150Flextube SynScan GoTo Dob lineSave up to$450Quattro f/4 astrographsSave up to$90Classic Dobsonian lineStarting at only$285Stargate truss-tube Dob lineSave$500Skymax Mak-Cass lineSave up to$125Flextube collapsible Dob lineSave up to$120Stargate SynScan Dob lineSave$5002018 Sky-Watcher USA.Pricing and specifications subject to change without notice.20-18022.Happy holidays(whichever particular one you happen to celebrate),everybody!Sky-Watcher USA wishes you and yours the absolute best in 2019.SynScan Pro mountsSave up to$250AllView multi-function mountNow only$400Virtuoso versatile mountNow only$240With the holidays just around the corner,the coolest thing we could do is make it even easier to own an award-winning Sky-Watcher scope or mount.So,from November 15th through December 31st,save up to$500 on some pretty frosty deals!For information on all of our products and services,or to find an authorized Sky-Watcher USA dealer near you,just visit .Dont forget to follow us on Facebook,Twitter and Instagram!Regular price Sale priceEvostar Apo Doublet Series80mm.$765.$640100mm.$875.$705120mm.$1780.$1550EvoView80 package.$1175.$1040Quattro f/4 Imaging Newtonian Series200mm(8 inch).$640.$600250mm(10 inch).$815.$760300mm(12 inch).$1279.$1189 Skymax Maksutov-Cassegrain Series90mm.$220.$190102mm.$265.$230127mm.$435.$400150mm.$750.$680180mm.$1200.$1075Starlux Maksutov-Newtonian Astrograph190mm.$1550.$1400Classic Dobsonian Series150mm(6 inch).$315.$285200mm(8 inch).$410.$370250mm(10 inch).$595.$545 Regular price Sale priceFlextube Collapsible Dobsonian Series200mm(8 inch).$505.$425250mm(10 inch).$695.$635300mm(12 inch).$1135.$1015Flextube SynScan GoTo Dobsonian Series200mm(8 inch).$1050.$950250mm(10 inch).$1335.$1135300mm(12 inch).$2105.$1880350mm(14 inch).$2555.$2305400mm(16 inch).$3400.$2950Stargate Truss-tube Dobsonian Series450mm(18 inch).$5999.$5499500mm(20 inch).$6999.$6499Stargate SynScan GoTo Truss-tube Dobsonian Series450mm(18 inch).$6999.$6499500mm(20 inch).$7999.$7499 EQ6-R Pro Mount.$1595.$1345AZ-EQ5 Pro Mount.$1385.$1285AllView.$435.$400Virtuoso Mount.$280.$240CONTENTSDaves Universe The inside scoop from the editor.Sky This Week A daily digest of celestial events.News The latest updates from the science and the hobby.Ask Astro Archives Answers to all your cosmic questions.4 ASTRONOMY DECEMBER 201818 COVER STORYMission Moon 3-DExplore the lunar surface as the Apollo astronauts did,in vivid stereoscopic detail.DAVID J.EICHER AND BRIAN MAY28The historic flight of Apollo 8 As we celebrate the golden anniversary of humanitys irst trip to the Moon,command module pilot Jim Lovell recounts the epic voyage.RICHARD TALCOTT36Sky This MonthVenus shines brilliantly.MARTIN RATCLIFFE AND ALISTER LING38StarDome and Path of the PlanetsRICHARD TALCOTT;ILLUSTRATIONS BY ROEN KELLY44Explore nearby deep-sky gems Interested in observing a red dwarf,supernova remnant,or galaxy cluster?Weve got you covered.ALAN GOLDSTEIN48Observe shadow play on the Moon he efects of light and dark on the lunar terminator ofer some great observing fun.PHIL HARRINGTON52Meet an expert in remote astroimaging Mark Hanson admits he was never a stellar student,but his photography is out of this world.58Astronomy tests Meades new astrograph his great-looking scope will help you create even better-looking images.JONATHAN TALBOT68Ask AstroSupernova signals.COLUMNSStrange Universe 12BOB BERMANSecret Sky 62STEPHEN JAMES OMEARAObserving Basics 64GLENN CHAPLEBinocular Universe 66PHIL HARRINGTONQUANTUM GRAVITYSnapshot 9Astro News 10 IN EVERY ISSUEFrom the Editor 6 Astro Letters 8 New Products 60Advertiser Index 65Reader Gallery 70Breakthrough 74FEATURESDECEMBER 2018VOL.46,NO.1228Astronomy(ISSN 0091-6358,USPS 531-350)is published monthly by Kalmbach Media Co.,21027 Crossroads Circle,P.O.Box 1612,Waukesha,WI 531871612.Periodicals postage paid at Waukesha,WI,and additional offices.POSTMASTER:Send address changes to Astronomy,P.O.Box 62320,Tampa,Fla.33662-2320.Canada Publication Mail Agreement#40010760.ONLINE FAVORITES Go to www.A for info on the biggest news and observing events,stunning photos,informative videos,and more.ON THE COVER During Apollo 12,astronaut Alan Bean descends the Lunar Module ladder,imaged by Pete Conrad.NASA Online Content Code:ASY1812Enter this code at: gain access to web-exclusive contentAt books