This page intentionally left blank Cosmic Challenge Listingmorethan500skytargets,bothnearandfar, in187challenges,thisobservingguidewilltest noviceastronomersandadvancedveteransalike.Its uniquemixofSolarSystemanddeep-skytargets willhaveobservershuntingfortheApollolunar landingsites,searchingforsatellitesorbitingthe outermostplanets,andexploringhundredsofstar clusters,nebulae,distantgalaxies,andquasars. Eachtargetobjectisaccompaniedbyarating indicatinghowdifficulttheobjectistofind,an in-depthvisualdescription,anillustrationshowing howtheobjectrealisticallylooks,andadetailed findercharttohelpyoufindeachchallengequickly andeffectively.Theguideintroducesobjectsoften overlookedinotherobservingguidesandfeatures targetsvisibleinavarietyofconditions,fromthe innercitytothedarkcountryside.Challengesare providedforviewingbythenakedeye,through binoculars,tothelargestbackyardtelescopes. PhilipS.Harringtonistheauthorofeightprevious booksfortheamateurastronomer,including TouringtheUniversethroughBinoculars,StarWare, andStarWatch.Heisalsoacontributingeditorfor Astronomymagazine,wherehehasauthoredthe magazine’smonthly“BinocularUniverse”column and“PhilHarrington’sChallengeObjects,”a quarterlyonlinecolumnonAstronomy.com.Heis anAdjunctProfessoratDowlingCollegeand SuffolkCountyCommunityCollege,NewYork, whereheteachescoursesinstellarandplanetary astronomy. Cosmic Challenge The Ultimate Observing List for Amateurs PHILIP S. HARRINGTON CAMBRIDGEUNIVERSITYPRESS Cambridge,NewYork,Melbourne,Madrid,CapeTown,Singapore, S˜aoPaulo,Delhi,Dubai,Tokyo,MexicoCity CambridgeUniversityPress TheEdinburghBuilding,CambridgeCB28RU,UK PublishedintheUnitedStatesofAmericabyCambridgeUniversityPress,NewYork www.cambridge.org Informationonthistitle:www.cambridge.org/9780521899369 (cid:1)C P.Harrington2011 Thispublicationisincopyright.Subjecttostatutoryexception andtotheprovisionsofrelevantcollectivelicensingagreements, noreproductionofanypartmaytakeplacewithoutthewritten permissionofCambridgeUniversityPress. Firstpublished2011 PrintedintheUnitedKingdomattheUniversityPress,Cambridge AcatalogrecordforthispublicationisavailablefromtheBritishLibrary ISBN9780521899369Hardback CambridgeUniversityPresshasnoresponsibilityforthepersistenceor accuracyofURLsforexternalorthird-partyinternetwebsitesreferredto inthispublication,anddoesnotguaranteethatanycontentonsuch websitesis,orwillremain,accurateorappropriate. FormywifeWendy,thecenterofmyuniverse Contents Preface pageix Acknowledgments x Photocredits xi 1 Meetingthechallenge 1 2 Naked-eyechallenges 27 3 Binocularchallenges 78 4 Small-scopechallenges: Giantbinoculars,3-to5-inchtelescopes 130 5 Medium-scopechallenges: 6-to9.25-inchtelescopes 223 6 Large-scopechallenges: 10-to14-inchtelescopes 307 7 Monster-scopechallenges: 15-inchandlargertelescopes 367 Epilogue:Theedgeofimagination 448 AppendixA Thecosmicchallenge 450 AppendixB Suggestedfurtherreading 461 AppendixC 100challengingdoublestars 463 Index 467 vii
Description: