ASTROMETRICS: Deepsky Studies by Optimal Aperture

NOTE: Optimal aperture entries are now plotted on star charts and listed on observing tables as the Astro.Geekjoy Deep Sky Atlas.

NOTES: OPTIMAL Scope Aperture is the least aperture that allows the observer to get a precise sense of a given DSO's shape, orientation, and frontier. In addition, the object should show variations in surface brightness and/or texture using averted vision. Calculations assume that stars in the vacinity of the object are directly visible without telescopic assistence to magnitude 5.5. Objects requiring higher powers (such as small planetaries and galaxies) need to be viewed during nights of good to excellent seeing. Every object on this list can be found with a 150mm scope under conditions described above.

In the special case of open clusters, optimal scope aperture is the primary size that allows a particular open cluster to be recognized as a collection of stars. Dimmer clusters may be seen, but identification may be difficult. (Such clusters may appear as an "asterism" embedded in faint background nebulosity.)

Certain very short focal length scopes can support low "rich-field" magnifications . Such magnifications can reveal large, low-surface brightness objects (such as NGC7000 - the North American Nebula). These studies just can't be properly displayed by larger apertures of long focal length.

Many extended deepsky objects lack a published magnitude (either photographic, visual or integrated). Such objects are not included. It would be of some value to the astronomical community if data related to minimum scope aperture and apparent size could be collected and related to observing experience and sky conditions. In this way data for objects (such as NGC6888 - the Crescent Nebula) could suggest preliminary empirically suggestive integrated magnitude figures. Please contact Astro.Geekjoy by email and we will be glad to post such information on this site...

Finally (whew), we've made no effort to include objects that can not be found using a 6 inch telescope (~140mm clear aperture). Those who wish to compile lists for larger scopes are encouraged to contact Astro.Geekjoy.

NOTE: Embedded links found in the following tables launch to deepsky sketches found on this website and others. The idea is to give a sense of how the various studies appear to observers using optimal scope sizes. Launching one of these links displays the sketch in a new browser instance. Please email Astro.Geekjoy if you know of similar sketches for inclusion in this list. Enjoy the tour!

Optimal For 50mm Aperture Scopes (17 studies)

DesignationLocationTypeComments
M31 AndromedaGalaxy (Condensed)30x
M45 TaurusOpen Cluster30x
M42 OrionBright Nebula60X
NGC1973-5-7 OrionBright Nebula60X
NGC1981 OrionOpen Cluster60X
CR140 Canis MajorOpen Cluster60X
NGC2232MonocerosOpen Cluster50X
NGC2451PuppisOpen Cluster45X
NGC5139CentaurusGlobular Cluster50X
M5SerpensGlobular Cluster60X
NGC6231ScorpiusOpen Cluster80X
M13HerculesGlobular Cluster60X
M6ScorpioOpen Cluster80X
NGC6530SagittariusOpen Cluster80X
M22SagittariusGlobular Cluster60X
CR399VulpeculaOpen Cluster30X
M40Ursa MajorFaint DoubleUse highest power

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Optimal For 75mm Aperture Scopes (32)
DesignationLocationTypeComments
NGC654CassiopeiaOpen Cluster130X
M41 Canis MajorOpen Cluster45X
NGC869 PerseusOpen Cluster60X.
NGC884 PerseusOpen Cluster60X.
NGC2169OrionOpen Cluster110X
NGC2244 MonocerosOpen Cluster+60X
IC2391VelaOpen Cluster40X
NGC2264 MonocerosOpen Cluster70X
M47PuppisOpen Cluster60X
NGC2547VelaOpen Cluster70X
IC2395VelaOpen Cluster100X
M44CancerOpen Cluster30X
M3Canes VenaticiGlobular Cluster60X
NGC6193AraOpen Cluster80x
NGC6250AraOpen Cluster100X
NGC6322ScorpioOpen Cluster100X
M10OphiuchusGlobular Cluster60X
M12OphiuchusGlobular Cluster60X
NGC6281ScorpiusOpen Cluster100X.
M7ScorpioOpen Cluster45X
IC4665OphiuchusOpen Cluster45X
M92HerculesGlobular Cluster70
NGC6397AraGlobular Cluster60X
NGC6541Corona AustralisGlobular Cluster70
NGC6633OphiuchusOpen Cluster60X
M25SagittariusOpen Cluster60X
M57 LyraPlanetary Nebula110X
M27 VulpeculaBright Nebula60X
M2AquariusGlobular Cluster70X
M15PegasusGlobular Cluster75X
M39CygnusOpen Cluster50X
NGC7160CepheusOpen Cluster110X

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Optimal For 100mm Aperture Scopes (55)
DesignationLocationTypeComments
NGC457 CassiopeiaOpen Cluster60X.
M103 CassiopeiaOpen Cluster100X.
NGC663CassiopeiaOpen Cluster60X.
M43OrionBright Nebula60X
M1 TaurusBright Nebula75X
M36 AurigaOpen Cluster90X
NGC1444PerseusOpen Cluster150X
NGC1499PerseusBright Nebula30X.
NGC2129GeminiOpen Cluster100X
NGC2169OrionOpen Cluster150X.
NGC2301MonocerosOpen Cluster90X
NGC2343MonocerosOpen Cluster110X
M35GeminiOpen Cluster60X
NGC2506MonocerosOpen Cluster110X
NGC2539PuppisOpen Cluster60X
NGC2579PuppisNebula60X
NGC2669VelaOpen Cluster90X
NGC3115SextansGalaxy60X
NGC3201VelaGlobular Cluster60X
NGC3132VelaPlanetary Nebula150X
NGC3242HydraPlanetary Nebula240x
M104VirgoGalaxy (Condensed)60X
M4ScorpioGlobular Cluster60X
NGC5986LupusGlobular Cluster75X
NGC6242ScorpioOpen Cluster100X
NGC6322ScorpiusOpen Cluster100X.
NGC6388ScorpiusGlobular Cluster80x.
M62OphiuchusGlobular Cluster70X
IC4651AraOpen Cluster90X
NGC6416ScorpioOpen Cluster70X
NGC6543 DracoPlanetary Nebula240X
M8 SagittariusBright Nebula60x
M21 SagittariusOpen Cluster80X
M28SagittariusGlobular Cluster70X
M16SerpensOpen Cluster50X
M11 ScutumOpen Cluster80X
IC4756SerpensOpen Cluster40X
NGC6572OphiuchusPlanetary Nebula240X
NGC6818SagittariusPlanetary Nebula240X
NGC6871CygnusOpen Cluster70X
M29 CygnusOpen Cluster110X
NGC7000 CygnusBright Nebula30X.
NGC7009AquariusPlanetary Nebula240X.
NGC7027 CygnusPlanetary Nebula240X.
NGC7293 AquariusPlanetary Nebula60X.
NGC7662 AndromedaPlanetary Nebula240X.
NGC7686AndromedaOpen Cluster80x
Stock2CassiopeiaOpen Cluster35X

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Optimal For 125mm Aperture Scopes (38)
DesignationLocationTypeComments
NGC253SculptorGalaxy (Condensed)60X.
NGC246CetusPlanetary Nebula100X
M32AndromedaCondensed Galaxy70x.
M34PerseusOpen Cluster50X
NGC1502CamelopardalisOpen Cluster120X.
NGC1535EridanusPlanetary Nebula200X
NGC1746TaurusOpen Cluster60X
NGC1851ColumbaGlobular Cluster70X
NGC1857AurigaOpen Cluster120x
M78OrionBright Nebula60X
M37AurigaOpen Cluster60X
NGC2335MonocerosOpen Cluster90X
NGC2384Canis MajorOpen Cluster170X
M50MonocerosOpen Cluster75X.
M49VirgoGalaxy (Condensed)60X
M64Coma BernicesGalaxy (Condensed)60X
NGC5128CentaurusGalaxy (Condensed)60X
M83HydraGalaxy (Condensed)60X
NGC5460CentaurusOpen Cluster60X
M80ScorpioGlobular Cluster80X.
NGC6167NormaOpen Cluster100X
NGC6169NormaOpen Cluster110X
NGC6178ScorpioOpen Cluster150X
NGC6210HerculesPlanetary Nebula240X
NGC6441ScorpioGlobular Cluster90X
NGC6723Corona AustralisGlobular Cluster70X
M19OphiuchusGlobular Cluster70X
M23SagittariusOpen Cluster60X
M24SagittariusStar Cloud30X
M69SagittariusGlobular Cluster90X
M54SagittariusGlobular Cluster80X
M17SagittariusBright Nebula60X
M55SagittariusGlobular Cluster60X
NGC6716SagittariusOpen Cluster110X
NGC6819CygnusOpen Cluster140x
IC4996CygnusOpen Cluster120X
M73AquariusAsterism200X
M30CapricornGlobular Cluster70X

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Optimal For 150mm Aperture Scopes (55)
DesignationLocationTypeComments
NGC40CepheusPlanetary Nebula200X
M33 TriangulumGalaxy (Condensed)60x
M77CetusGalaxy (Condensed)70X.
NGC1342PerseusOpen Cluster80X
NGC1360FornaxPlanetary Nebula70x
NGC1545 PerseusOpen Cluster70X
IC2157GeminiOpen Cluster110X
M79 LepusGlobular Cluster80X
M38 AurigaOpen Cluster60X
NGC2261 MonocerosBright Nebula120X
NGC2396PuppisOpen Cluster90X
NGC2439PuppisOpen Cluster100X
NGC2467PuppisOpen Cluster100X also nebula
NGC2477PuppisOpen Cluster60X
M93PuppisOpen Cluster60X
M46 PuppisOpen Cluster60X
NGC2533PuppisOpen Cluster150X
M48HydraOpen Cluster45X.
M67CancerOpen Cluster60X.
M81 Ursa MajorGalaxy (Condensed)60X
M82 Ursa MajorGalaxy (Condensed)60X
NGC3115SextansGalaxy (Condensed)60X
M87 VirgoGalaxy (Condensed)70X
M60VirgoGalaxy (Condensed)70X
M94 Canes VenaticiGalaxy60X
NGC3521LeoGalaxy60X
NGC4526VirgoGalaxy70X
M53 Coma BernicesGlobular Cluster70X
M51 Canes VenaticiGalaxy60X
NGC6124ScorpiusOpen Cluster60X
NGC6134NormaOpen Cluster110X
NGC6352AraGlobular Cluster90X
NGC6425ScorpioOpen Cluster100X
IC4651AraOpen Cluster90X
M9OphiuchusGlobular Cluster80X
M14OphiuchusGlobular Cluster70X
M70SagittariusGlobular Cluster80X
M18SagittariusOpen Cluster100X
IC4703Serpens Caputnebula60X
NGC6664ScutumOpen Cluster50X
NGC6709AquilaOpen Cluster80X
IC1396CepheusOpen Cluster30X
NGC6712ScutumGlobular Cluster90X
NGC6790 AquilaPlanetary Nebula240X
M56 LyraGlobular Cluster90X
NGC6811CygnusOpen Cluster80X
NGC6826CygnusPlanetary Nebula240x.
NGC6910CygnusOpen Cluster100X.
NGC6940VulpeculaOpen Cluster60X.
NGC7063CygnusOpen Cluster100X
NGC7235CepheusOpen Cluster150X
NGC7243LacertaOpen Cluster60X
NGC7789CassiopeiaOpen Cluster75X.
M52CassiopeiaOpen Cluster80X.
M49VirgoGalaxy (Condensed)80X

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Optimal For 200mm Aperture Scopes (119)
DesignationLocationTypeComments
NGC55SculptorGalaxy (Condensed)45X
NGC134SculptorGalaxy60X
NGC225CassiopeiaOpen Cluster90X
NGC247CetusGalaxy60X
NGC288SculptorGlobular Cluster70X
M110 AndromedaGalaxy (Diffuse)60X
NGC281 CassiopeiaBright Nebula60x
NGC637CassiopeiaOpen Cluster150X
NGC659CassiopeiaOpen Cluster130X
NGC663CassiopeiaOpen Cluster75X
NGC720CetusGalaxy (Condensed)150X
NGC752 AndromedaOpen Cluster45x
NGC957PerseusOpen Cluster90X
NGC1023PerseusGalaxy60X
NGC1027CassiopeiaOpen Cluster70X
M76 PerseusPlanetary Nebula120X
NGC1291EridanusGalaxy60X
NGC1316FornaxGalaxy (Condensed)70X
NGC1528 PerseusOpen Cluster60X
NGC1582PerseusOpen Cluster50X
NGC1647 TaurusOpen Cluster45X
NGC1662OrionOpen Cluster70X
NGC1778AurigaOpen Cluster110X
NGC1807TaurusOpen Cluster75X
NGC1808ColumbaGalaxy70X
NGC1893AurigaOpen Cluster90x
NGC2024OrionBright Nebula60X
NGC2175OrionOpen Cluster+70X
NGC2237MonocerosBright Nebula45X
NGC2251MonocerosOpen Cluster90X
NGC2281 GeminiOpen Cluster70X
NGC2335PuppisOpen Cluster90X
NGC2360PuppisOpen Cluster90X
NGC2354Canis MajorOpen Cluster70X
NGC2367Canis MajorOpen Cluster150X
NGC2392GeminiPlanetary Nebula240X
NGC2403CamelopardisGalaxy (Condensed)60X
NGC2414PuppisOpen Cluster150X
NGC2423PuppisOpen Cluster70X
NGC2438PuppisPlanetary Nebula180X
NGC2440PuppisPlanetary Nebula240X
NGC2456PuppisOpen Cluster50X
NGC2482PuppisOpen Cluster90X
NGC2483PuppisOpen Cluster100X
NGC2527PuppisOpen Cluster60X
NGC2546PyxisOpen Cluster45X
NGC2567PuppisOpen Cluster100X
NGC2571PuppisOpen Cluster75X
NGC2659VelaOpen Cluster170X
NGC2670VelaOpen Cluster100X
NGC2683 LynxGalaxy (Condensed)60X
NGC2768Ursa MajorGalaxy75X
NGC3109HydraGalaxy60X
NGC2841 Ursa MajorGalaxy (Condensed)70X
NGC4215DracoGalaxy80X
NGC4236DracoGalaxy60X
M96 LeoGalaxy (Condensed)70X
M105 LeoGalaxy (Condensed)80X
M65 LeoGalaxy (Condensed)60X
M66 LeoGalaxy (Condensed)60X
M68HydraGlobular Cluster60X
M61VirgoGalaxy (Condensed)70X
M85Coma BernicesGalaxy (Condensed)70X
NGC441? DracoGalaxy (Condensed)80x
M84 VirgoGalaxy (Condensed)80X
M86 VirgoGalaxy (Condensed)70X
M88 Coma BernicesGalaxy (Condensed)70X
M90 VirgoGalaxy (Condensed)60X
M59 VirgoGalaxy (Condensed)80X
NGC4565 Coma BerenicesGalaxy (Condensed)60X
NGC4216VirgoGalaxy60X
NGC4525Coma BerenicesGalaxy60X
NGC4631Canes VenaticiGalaxy*60X
NGC4762VirgoGalaxy60X
M106 Canes VenaticiGalaxy60X
M63 Canes VenaticiGalaxy60X
NGC5102CentaurisGalaxy60X
NGC5248BootesGalaxy70X
NGC5363VirgoGalaxy90X
NGC5822LupusOpen Cluster50X
NGC5866DracoGalaxy (Condensed)80X
NGC5907Ursa MajorGalaxy60X
NGC5927LupusGlobular Cluster70X
NGC6200AraOpen Cluster90X
NGC6204AraOpen Cluster130X
NGC6281ScorpioOpen Cluster40X
M107 OphiuchusGlobular Cluster75X
NGC6304OphiuchusGlobular Cluster90X
NGC6316OphiuchusGlobular Cluster110X
NGC6383ScorpioOpen Cluster30X
NGC6356OphiuchusGlobular Cluster100X
NGC6520SagittariusOpen Cluster120X
NGC6522 SagittariusGlobular Cluster100
NGC6569SagittariusGlobular Cluster100
NGC6624SagittariusGlobular Cluster100.
M20SagittariusBright Nebula60X
NGC6544SagittariusGlobular Cluster80X
NGC6553SagittariusGlobular Cluster85X
NGC6642SagittariusGlobular Cluster110X
NGC6652SagittariusGlobular Cluster130X
M71 SagittaGlobular Cluster90X
M75 SagittariusGlobular Cluster100X
NGC6823VulpeculaOpen Cluster +90X
NGC6834CygnusOpen Cluster130X
NGC6885VulpeculaOpen Cluster110X
NGC6934DelphinusGlobular Cluster100X
NGC6946CepheusGalaxy60X
IC1369CygnusOpen Cluster150X
IC5146CygnusOpen Cluster+90X
NGC7209LacertaOpen Cluster60X
NGC6939CepheusOpen Cluster110X
NGC6866CygnusOpen Cluster110X
NGC6979CygnusBright Nebula45X.
NGC7062CygnusOpen Cluster110X
NGC7209 LacertaOpen Cluster60X
NGC7331 PegasusGalaxy (Condensed)60X
NGC7380CepheusOpen Cluster90X
NGC7510CepheusOpen Cluster150X
NGC7793SculptorGalaxy60X

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Optimal For 250mm Aperture Scopes (124)
DesignationLocationTypeComments
NGC189CassiopeiaOpen Cluster150X
M74 PiscesGalaxy (Condensed)60X
NGC300SculptorGalaxy60X
NGC584CetusGalaxy75X
NGC604Triangulum*M33 Bright Nebula*120X
NGC613SculptorGalaxy (Condensed)80X
NGC744PerseusOpen Cluster90x
NGC891Andromeda Galaxy (Condensed)60X
NGC908CetusGalaxy80X
NGC936CetusGalaxy (Condensed)90X
IC1805PerseusOpen Cluster+40X
IC1848PerseusOpen Cluster+40X
NGC956PerseusOpen Cluster110X
IC342CamelopardisGalaxy60X
NGC1097FornaxGalaxy60X
NGC1300EridanusGalaxy (Condensed)70X
NGC1332EridanusGalaxy85X
NGC1344FornaxGalaxy90X
NGC1365FornaxGalaxy (Condensed)60X
NGC1398FornaxGalaxy70X
NGC1399FornaxGalaxy100X
NGC1407EridanusGalaxy110X
NGC1433HorologiumGalaxy70X
NGC1514 PerseusPlanetary Nebula120X
NGC1532EridanusGalaxy75X
NGC1582PerseusOpen Cluster50X
NGC1664AurigaOpen Cluster70X
NGC1788EridanusBright Nebula60X
NGC1792ColumbaGalaxy90X
NGC1817TaurusOpen Cluster75X
NGC1832LepusGalaxy110X
NGC1907AurigaOpen Cluster110x
NGC1931AurigaBright Nebula100X
NGC2023OrionBright Nebula60X
NGC2071OrionBright Nebula90X
NGC2146CamelopardelisGalaxy75X
IC2149AurigaPlanetary240X
NGC2158GeminiOpen Cluster150X.
NGC2186OrionOpen Cluster150X
NGC2194OrionOpen Cluster100X
IC418LepusPlanetary240X
NGC2204Canis MajorOpen Cluster80X
NGC2236MonocerosOpen Cluster110X
NGC2286MonocerosOpen Cluster +80X
NGC2345Canis MajorOpen Cluster90X
NGC2353PuppisOpen Cluster70X
NGC2383Canis MajorOpen Cluster120X
NGC2453PuppisOpen Cluster140X
NGC2489PuppisOpen Cluster100X
NGC2613PyxisGalaxy70X
NGC2627PyxisOpen Cluster90X
NGC2784HydraGalaxy80X
NGC2818PyxisOpen Cluster100X
NGC2903Leo Galaxy (Condensed)80X
NGC2976 Ursa MajorGalaxy (Condensed)80X
NGC3077Ursa MajorGalaxy (Condensed)80X
NGC3079 Ursa MajorGalaxy (Condensed)60X
NGC3184Ursa MajorGalaxy70X
NGC3198Ursa MajorGalaxy60X
NGC3377LeoGalaxy90X
NGC3384LeoGalaxy (Condensed)70X
NGC3489LeoGalaxy90X
NGC3628 LeoGalaxy (Condensed)60X
NGC3953Ursa MajorGalaxy70X
NGC4036Ursa MajorGalaxy90X
NGC4361 CorvusPlanetary Nebula240X
NGC4388VirgoGalaxy (Condensed)80X
NGC4429VirgoGalaxy80X
NGC4438VirgoGalaxy (Condensed)60X
NGC4450Coma BerenicesGalaxy80X
NGC4459Coma BerenicesGalaxy90X
NGC4473Coma BerenicesGalaxy80X
NGC4494Coma BerenicesGalaxy80X
NGC4535VirgoGalaxy70X
NGC4559 Coma BernicesGalaxy (Condensed)60X
NGC4656Coma BerenicesGalaxy60X
M95 LeoGalaxy (Condensed)70X
M97 Ursa MajorPlanetary Nebula100X
M108 Ursa MajorGalaxy (Condensed)60X
M109Ursa MajorGalaxy (Condensed)60X
M89 VirgoGalaxy (Condensed)90X
M58 VirgoGalaxy (Condensed)80X
M98 Coma BernicesGalaxy (Condensed)60X
M99 Coma BernicesGalaxy (Condensed)80X
M100 Coma BernicesGalaxy (Condensed)70X
NGC4725 Coma BernicesGalaxy (Condensed)*60X
NGC5195Canes VenaticiGalaxy (Condensed)80X
NGC5322Ursa MajorGalaxy80X
NGC5466 BootesGlobular Cluster70X
M101 Ursa MajorGalaxy (Condensed)60X
NGC5824LupusGlobular Cluster100X
NGC5846 VirgoGalaxy (Condensed)100X
NGC5897SerpensGlobular Cluster60X
NGC6207 HerculesGalaxy (Condensed)100X
NGC6217Ursa MinorGalaxy100X
NGC6229 HerculesGlobular Cluster120X
NGC6249ScorpioOpen Cluster120X
NGC6259ScorpioOpen Cluster100X
I4593HerculesPlanetary240X
NGC6293ScorpioOpen Cluster100X
NGC6396ScorpioOpen Cluster170X
NGC6451ScorpioOpen Cluster100X
NGC6496Corona AustralisGlobular Cluster90X
NGC6503DracoGalaxy75X
NGC6528SagittariusGlobular Cluster120X
NGC6584TelescopiumGlobular Cluster90X
NGC6638SagittariusGlobular Cluster100X
NGC6645 SagittariusOpen Cluster100X.
M26 ScutumOpen Cluster80X.
NGC6755AquilaOpen Cluster80X
NGC6760AquilaGlobular Cluster90X
M72 AquariusGlobular Cluster100X
NGC6830VulpeculaOpen Cluster90X
NGC6939CepheusOpen Cluster110X
NGC6946 CepheusGalaxy (Condensed)60X
NGC6960 CygnusBright Nebula45X.
IC5146LacertaBright Nebula60X.
NGC7082CygnusOpen Cluster60X
NGC7217 PegasusGalaxy (Condensed)90X
NGC7261CepheusOpen Cluster120X
NGC7380CepheusOpen Cluster60X
NGC7410GrusGalaxy75X
NGC7814PegasusGalaxy75X
IC1459GrusGalaxy110X

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Optimal For 300mm Aperture Scopes (106)
DesignationLocationTypeComments
NGC14PegasusGalaxy100X
NGC40SculptorGalaxy60X
NGC147 CassiopeiaGalaxy (Diffuse)60X
NGC157CetusGalaxy90X
NGC185 CassiopeiaGalaxy (Diffuse)60X
IC10CassiopeiaGalaxy (Diffuse)80X
NGC188CepheusOpen Cluster80X
NGC206Andromeda*M31 Star Cloud*120X
NGC404 AndromedaGalaxy (Condensed)80X
NGC436CassiopeiaOpen Cluster120X
NGC488PiscesGalaxy (Condensed)80X
NGC520PiscesGalaxy (Condensed)80X
NGC584CetusGalaxy90X
NGC660PiscesGalaxy (Condensed)60X
NGC772AriesGalaxy70X
NGC925TriangulumGalaxy60X
NGC1052CetusGalaxy (Condensed)100X
NGC1055 CetusGalaxy (Condensed)60X
NGC 1232EridanusGalaxy60X
NGC1245PerseusOpen Cluster100X
NGC1317FornaxGalaxy (Condensed)100X
NGC1501 CamelopardalisPlanetary Nebula120X
NGC1513PerseusOpen Cluster90X
NGC1521EridanusGalaxy90X
NGC1624 PerseusBright Nebula120X
NGC1964LepusGalaxy70X
NGC2022 OrionPlanetary Nebula200X
NGC2067OrionBright Nebula60X
NGC2170MonocerosBright Nebula100X
NGC2207Canis MajorGalaxy90X
NGC2215MonocerosOpen Cluster90X
NGC2217Canis MajorGalaxy80X
NGC2298PuppisOpen Cluster90X
NGC2302MonocerosOpen Cluster170X
NGC2316MonocerosBright Nebula90X
NGC2324MonocerosOpen Cluster100X
NGC2325Canis MajorGalaxy110X
NGC2336CamelopardelisGalaxy70X
NGC2374Canis MajorOpen Cluster70X
NGC2395GeminiOpen Cluster90X
NGC2366Camelopardalis Galaxy (Diffuse)65X
NGC2419 LynxGlobular Cluster120X
NGC2420GeminiOpen Cluster100X
NGC2421PuppisOpen Cluster90X
NGC2655CamelopardelisGalaxy80X
NGC2660VelaOpen Cluster150X
NGC2681Ursa MajorGalaxy (Condensed)90X
NGC2775CancerGalaxy80X
NGC2974SextansGalaxy100X
IC2574Ursa MajorGalaxy (Diffuse)60X
NGC2681Ursa MajorGalaxy (Diffuse)90X
NGC2985Ursa MajorGalaxy90X
NGC3166SextansGalaxy80X
NGC3169SextansGalaxy80X
NGC3344Leo MinorGalaxy70X
NGC3486Leo MinorGalaxy70X
NGC3631Ursa MajorGalaxy80X
NGC3726Ursa MajorGalaxy75X
NGC3938Ursa MajorGalaxy80X
NGC4236 DracoGalaxy (Condensed)60X
NGC4387VirgoGalaxy (Condensed)130X.
NGC4394Coma BernicesGalaxy (Condensed)90X
NGC4402VirgoGalaxy (Condensed)90X
NGC4435 VirgoGalaxy (Condensed)100X
NGC4476VirgoGalaxy (Condensed)130X
NGC4477Coma BerenicesGalaxy90X
NGC4478VirgoGalaxy (Condensed)130X
M91 Coma BernicesGalaxy (Condensed)80X
NGC5053Coma BernicesGlobular Cluster60X
NGC5364VirgoGalaxy70X
NGC5634VirgoGlobular Cluster120X
NGC5946NormaGlobular Cluster90X
NGC6284ScorpioOpen Cluster130X
NGC6342OphiuchusGlobular Cluster140X
NGC6355OphiuchusGlobular Cluster110X
NGC6369 OphiuchusPlanetary Nebula240X.
NGC6440 SagittariusGlobular Cluster120X
NGC6401OphiuchusGlobular Cluster100X
NGC6453ScorpiusGlobular Cluster120X
NGC6469SagittariusOpen Cluster90X
NGC6539Serpens CaudaGlobular Cluster90X
NGC6546SagittariusOpen Cluster80X
NGC6445 OphiuchusPlanetary Nebula240X.
NGC6649ScutumOpen Cluster120X
NGC6603SagittariusOpen Cluster140X
NGC6738AquilaOpen Cluster80X
NGC6802VulpeculaOpen Cluster170X
NGC6822 SagittariusGalaxy (Diffuse)60X
NGC6883CygnusOpen Cluster80X
NGC6888CygnusBright Nebula45X.
NGC7023 CepheusBright Nebula60X
NGC7031CygnusOpen Cluster130X
NGC7039CygnusOpen Cluster60X
NGC7086CygnusOpen Cluster100X
NGC7457AndromedaGalaxy90X
NGC7507SculptorGalaxy110X
NGC7606AquariusGalaxy70X
NGC7640AndromedaGalaxy60X
NGC7727AquariusGalaxy90X
NGC7817PegasusGalaxy90X
IC5267GrusGalaxy80X

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