So far as hypotheses are concerned, let no one expect anything certain from astronomy, which cannot furnish it, lest he accept as the truth ideas conceived for another purpose, and depart from this study a greater fool than when he entered it.

/ Nicolaus Copernicus /

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By type:

open clusters [67]

globular clusters [14]

diffuse nebulae [3]

dark nebulae [0]

planetary nebulae [27]

variable stars [18]

binary stars [23]

asterisms [2]

galaxies [119]

quasars [1]

planets [2]

minor planets [1]

comets [5]

Sun [0]

Moon [5]

other objects [8]

By catalogue:

Messier 1-50 [20]

Messier 51-110 [18]

NGC 1-1000 [17]

NGC 1001-2000 [21]

NGC 2001-3000 [32]

NGC 3001-4000 [25]

NGC 4001-5000 [18]

NGC 5001-6000 [22]

NGC 6001-7000 [40]

NGC 7001-7840 [35]

IC 1-5386 [1]

other catalogues [71]

uncataloged [10]

[25]

By constellation:

Andromeda Antlia Apus Aquila Aquarius Ara Aries Auriga Boötes Caelum Camelopardalis Capricornus Carina Cassiopeia Centaurus Cepheus Cetus Chamaeleon Circinus Canis Major Canis Minor Cancer Columba Coma Berenices Corona Austrina Corona Borealis Crater Crux Corvus Canes Venatici Cygnus Delphinus Dorado Draco Equuleus Eridanus Fornax Gemini Grus Hercules Horologium Hydra Hydrus Indus Lacerta Leo Lepus Libra Leo Minor Lupus Lynx Lyra Mensa Microscopium Monoceros Musca Norma Octans Ophiuchus Orion Pavo Pegasus Perseus Phoenix Pictor Piscis Austrinus Pisces Puppis Pyxis Reticulum Sculptor Scorpius Scutum Serpens Sextans Sagitta Sagittarius Taurus Telescopium Triangulum Australe Triangulum Tucana Ursa Major Ursa Minor Vela Virgo Volans Vulpecula

NGC 4100 (Galaxy) Right ascension: 12h 07m Declination: 49° 30' Constellation: Ursa Major Date/time: 2014.05.23 22:30 UT Equipment: 12" f/5 Newtonian FoV: 25' Magnification and filter(s): 167x Seeing: 6/10 Transparency: 3/5 SQM: 21.11 m/as2 Temperature: 13°C Humidity: dry Wind: none Sight: 2 - minor details, somewhat interesting Difficulty: 4 - hardly visible, dark adaptation and very dark skies needed, averted vision is required to see details Position: 3 - moderate, some starhopping needed Location: Nádasdladány, Hungary Observer: Ferenc Lovró Description: Faint galaxy with a N-S elongation and a very nice oval shape that's no too flat, but looks a bit like a cigar. Its Northern side appears a bit brighter. Situated in a nice stellar neighborhood. Hi-resolution image: [ reversed sketch | original sketch ]

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