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DeepSkyObjectsPart1

PAANoviceClass#8March6,2020BrettHardy

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WhatAreDeepSkyObjects?•  BeyondtheMoon&Planets•  WithintheMilkyWayGalaxy!  Doublestars!  Openclusters!  Globularclusters!  Planetarynebulae!  Emission&reflectionnebulae!  Comets!  Asteroids•  OutsidetheMilkyWayGalaxy!  Galaxies

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SeasonalChangeSpringLeo,Virgo,ComaBerenices,Cancer,UrsaMajor,CanesVenatici,Hydra,Draco,SerpensSummerSagittarius,Scorpius,Hercules,Lyra,Cygnus,Ophiuchus,Serpens,Scutum,Sagitta,VulpeculaFallAquarius,Andromeda,Capricornus,Pegasus,Perseus,Cetus,Cassiopeia,Triangulum,PiscesWinterOrion,Taurus,CanisMajor,Auriga,Gemini,Lepus,Monoceros,Puppis,HydraCircumpolarUrsaMajor,UrsaMinor,Draco,Cassiopeia,Cepheus

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LocatingDeepSkyObjectsCoordinateSystem!  RightAscension(R.A.)!  Declination(Dec.)!  RightAscensionmeasuredin

hours(24),minutes(60)&seconds(60)

!  R.A.hours0-23increasingtoEast!  0hR.A.goesthroughPisces!  Declinationmeasuredindegrees

(°),arcminutes(‘)&arcseconds(“)!  Dec.increasesfrom0°atthe

CelestialEquatorto+90°attheNorthCelestialPole(-90°@SCP)

!  SiriusR.A.:06h46m02.24sDec.:-16°44’16.8”

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ObjectCatalogues•  NewGeneralCatalogue(NGC)•  IndexCatalogue(IC)•  RASCFinestNGC•  CaldwellCatalogue(C)•  ArpCatalogue

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MessierCatalogue•  109objects(M102isaduplicate

observationofM101)!  2asterisms!  27openclusters!  29globularclusters!  4planetarynebulae!  7diffusenebulae!  24spiralgalaxies!  3barredspiralgalaxies!  11ellipticalgalaxies!  1irregulargalaxy!  1supernovaremnant

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AsterismsSpringM40SummerM24FallNoneWinterNoneBinocularsM24,M40

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OpenClustersSpringM44,M67SummerM6,M7,M11,M16,M18,M21,M23,M25,M26,M29,M39FallM34,M52,M73,M103WinterM35,M36,M37,M38,M41,M45,M46,M47,M48,M50,M93BinocularsAllM45

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GlobularClustersSpringM3,M5,M53,M68SummerM4,M9,M10,M12,M13,M14,M19,M22,M28,M54,M55,M56,M62,M69,M70,M71,M75,M80,M92,M107FallM2,M15,M30,M72WinterM79BinocularsAllM2,M3,M10,M13,M22,M92

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PlanetaryNebulaeSpringM97SummerM27,M57FallM76WinterNoneBinocularsM27,M57,M76

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DiffuseNebulaeSpringNoneSummerM8,M16,M17,M20FallNoneWinterM42,M43,M78BinocularsAllM42

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GalaxiesSpringM49,M51,M58,M59,M60,M61,M63,M64,M65,M66,M81,M82,M83,M84,M85,M86,M87,M88,M89,M90,M91,M94,M95,M96,M98,M99,M100,M101,M102*,M104,M105,M106,M108,M109SummerNoneFallM31,M32,M33,M74,M77,M110WinterNoneBinocularsM31,M33,M51

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SupernovaRemnantsSpringNoneSummerNoneFallNoneWinterM1Binoculars?

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FilterUse•  LightPollutionandSkyGlow•  Nebula

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PAAMessierCertificatesFourdifferentlevels!  30+MessierObjectsobserved!  60+MessierObjectsobserved!  90+MessierObjectsobserved!  All109MessierObjectsobserved

•  Certificatesdifferentiatedbyacquisitionmethod

•  ContactRickStankiewiczorSeanDunne

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ObservingTips•  Learnconstellationsandbright

stars•  Useaplanisphere,starcharts,

magazineallskychart,appsonyourphoneortablet

•  Moonlessnights•  Darksky•  Recordobservations

ObservingWithBinoculars!  Useatripodorparallelogram

mount!  Usealoungechair!  Lookwitheyesfirst!  Imageorientationsameaseyes

ObservingWithaSmallTelescope

!  Alt/Azmountsareeasiertouse!  Ensuretelescope&finderscope

areparallel!  Imageorientationvaries!  Filters

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PrintResources•  SkyCharts!  CambridgeStarAtlas2000byWil

TirionISBN:0-521-26322-0!  Uranometria2000Volume1&2by

Tirion,Rappaport,LoviISBN:0-943396-14-X(v.1)

0-943396-15-8(v.2)!  SkyAtlas2000byWilTirion(large

format)ISBN:0-933346-33-6•  Magazines!  SkyNews!  Astronomy!  Sky&Telescope•  Books!  TheMessierObjectsbyStephen

JamesO’MearaISBN:0-521-55332-6!  DeepSkyWondersbySueFrench

ISBN:978-1-554007-793-9!  CosmicChallengebyPhilipS.

HarringtonISBN:978-0-521-89936-9

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Software&Apps•  Stellarium•  CartesduCiel•  GoSkyWatchPlenatarium•  SkySafari•  StarryNight•  SkyTools4

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PAANoviceClass#10DeepSkyObjectsPart2May1,2020

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