Cloudy Nights'
Monthly Challenge Objects - 2024
Observing guides for Cloudy Nights' Monthly Challenge Objects in the year 2024.
Use the button(s) to download the objects of the month in the image orientation of your choice, click the object's name to visit the corresponding page on the Cloudy Nights forum. Please read Downloading CSOG and iPad Astronomy.
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January - February - March - April - May - June - July - August - September - October
Registration is not required to download the current Objects of the Month
October
Click here to review the CSOG image orientations
Click here for the Struve Double Stars edition
Galaxy NGC7252 (Arp 226) - the "Atoms for Peace Galaxy" in Aquarius
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Arp Peculiar Galaxies edition
Click here for the Burnham's Celestial Handbook - DSO's edition
Click here for the Named Objects edition
Galaxy pair Arp 93 (NGC7284 & NGC7285) in Aquarius
Click here for the 12-14" Constellation edition
Click here for the Herschel edition
Click here for the Arp Peculiar Galaxies edition
September
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Open cluster Collinder 399 - "the Coathanger" in Vulpecula
Click here for the Constellation editions
Click here for the Collinder Star Clusters edition
Click here for the Burnham's Celestial Handbook - DSO's edition
Click here for the Named Objects edition
Globular cluster NGC6749 in Aquila
Click here for the 12-14" Constellation edition
Click here for the Berkeley Star Clusters edition
Planetary nebula Minkowski 1-90 in Aquila
Click here for the 12-14" Constellation edition
Click here for the Minkowski Nebulae edition
Planetary nebula Hartl-Tritton 10 in Aquila
August
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Double star "Albireo" (Beta Cygni - STFA43 - WDS19307+2758) in Cygnus
Click here for the Struve Double Stars edition
Planetary nebula Minkowski 1-67 - "Merrill's Star" in Sagitta
Click here for the 12-14" Constellation edition
Click here for the Minkowski Nebulae edition
Click here for the Named Objects edition
Planetary nebula PN G054.2-03.4 - the "Necklace Nebula" in Sagitta
Click here for the 12-14" Constellation edition
July
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Open cluster Melotte 186 - "Poniatowski's Bull" in Ophiuchus
Click here for the Melotte Star Clusters edition
Click here for the Collinder Star Clusters edition
Click here for the Named Objects edition
Planetary nebula IC4593 - the "White Eyed Pea" in Hercules
Click here for the Constellation editions
Click here for the Messier edition
Click here for the Burnham's Celestial Handbook - DSO's edition
Click here for the Named Objects edition
Galaxy pair MCG+01-54-001 & PGC66150 (Vorontsov-Vel'yaminov 476) in Equuleus
Click here for the 12-14" Constellation edition
June
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Double star Epsilon-1 & 2 Lyrae (WDS18443+3940) - the "Double double" in Lyra
Click here for the Struve Double Stars edition
Galaxy group IC4562, IC4562A, IC4564, IC4566, IC4565 & IC4567 in Boötes
Click here for the 12-14" Constellation edition
Galaxy pair MCG+08-30-002 & PGC101538 (Arp 2) in Hercules
Click here for the Arp Peculiar Galaxies edition
May
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Click here for the Struve Double Stars edition
Galaxy pair NGC3445 & MCG+10-16-024 (Arp 24) in Ursa Major
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Arp Peculiar Galaxies edition
Click here for the Burnham's Celestial Handbook - DSO's edition
Asterism "Gottlieb's Circle" and galaxies PGC2193753 & SDSS J181734.57+421041 in Lyra
April
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Open cluster NGC2158 in Gemini
Click here for the Constellation editions
Click here for the Melotte Star Clusters edition
Click here for the Raab Open Clusters edition
Click here for the Collinder Clusters edition
Click here for the Burnham's Celestial Handbook - DSO's edition
Galaxy pair NGC4204 & PGC39187 in Coma Berenices
Click here for the 12-14" Constellation edition
Click here for the Herschel edition
Galaxy MCG+03-31-055 in Coma Berenices
Click here for the 12-14" Constellation edition
March
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Open cluster Melotte 20 - the "Alpha Persei Cluster" in Perseus
Click here for the Constellation editions
Click here for the Melotte Star Clusters edition
Click here for the Collinder Clusters edition
Click here for the Burnham's Celestial Handbook - DSO's edition
Click here for the Named Objects edition
Planetary nebula IC2149 in Auriga
Click here for the Constellation editions
Click here for the Named Objects edition
Emission nebula Sharpless 2-241 & reflection nebula Struve-Straka 49 in Auriga
Click here for the Constellation editions
Reflection nebula Cederblad 61 in Auriga
Click here for the Constellation editions
February
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Open cluster NGC2362 - the "Tau Canis Majoris Cluster" in Canis Major
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Melotte Star Clusters edition
Click here for the Raab Open Clusters edition
Click here for the Collinder Clusters edition
Click here for the Named Objects edition
Click here for the Bennett edition
Click here for the Struve Double Stars edition
Emission nebulae NGC1491 & Simeis 25 - the "Fossil Footprint Nebula" in Perseus
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Burnham's Celestial Handbook - DSO's edition
Click here for the Named Objects edition
Reflection nebula GN 04.41.8 in Perseus
Click here for the Constellation editions
January
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Open cluster NGC2169 - the "37 Cluster" in Orion
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Collinder Star Clusters edition
Click here for the Burnham's Celestial Handbook - DSO's edition
Click here for the Named Objects edition
Click here for the Constellation editions
Galaxy pair NGC2444 & NGC2445 (Arp 143) - "Genie in a bottle" in Lynx
Click here for the Constellation editions
Click here for the Arp Peculiar Galaxies edition