Cloudy Nights'
Monthly Challenge Objects - 2025
Observing guides for Cloudy Nights' Monthly Challenge Objects in the year 2025.
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-1 - February-2 - March - April - May - June - July
Registration is not required to download the current Objects of the Month
July
Click here to review the CSOG image orientations
Globular cluster Messier 4 (NGC6121- Lacaille I.9) - the "Cat's Eye" in Scorpius
This object is included in CSOG's:
Constellation editions by telescope aperture
Messier editions
Lacaille editions
Melotte Star Clusters edition
Burnham's Celestial Handbook - DSO's edition
Named Objects edition
Bennett edition
Globular cluster Haute-Provence Observatory 1 in Ophiuchus
This object is included in CSOG's:
12-14" Constellation edition
Van den Bergh-Hagen Star Clusters edition
Planetary nebula Hubble 5 - "Hubble's Double Bubble" in Sagittarius
This object is included in CSOG's:
12-14" Constellation edition
Hubble Nebulae edition
Named Objects edition
Galaxy PGC62946 - "the Bird" in Sagittarius
This object is included in CSOG's:
June
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Galaxy NGC4861 (Arp 266) with HII region PGC93120 (Markarian 59) in Canes Venatici
This object is included in CSOG's:
12-14" Constellation edition
Herschel edition
Arp Peculiar Galaxies edition
Karachentsev Northern Isolated Pairs of Galaxies (KPG) edition
Herschel 3 observing program
Galaxy pair NGC5846 & NGC5846A (Holmberg 694) in Virgo
This object is included in CSOG's:
Constellation editions by telescope aperture
Herschel edition
Holmberg Double and Multiple Galaxies edition
Burnham's Celestial Handbook - DSO's edition
Herschel 400 observing program
Texas Star Party 2025 - Advanced Observing Program
Galaxy MCG+00-39-011 in Serpens (Caput)
May
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Planetary nebula Abell 36 - the "Bat Symbol Nebula" in Virgo
Galaxy group PGC84569, PGC4530597 & PGC3845255 in Boötes
April
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Planetary nebula NGC3242 - the "Ghost of Jupiter" and nebulosity in the constellation of Hydra
March
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Galaxy IC2574 - "Coddington's Nebula" in Ursa Major
Galaxy NGC3003 - the "Little Whale Galaxy" in Leo Minor
Galaxy pair KPG 216 in Sextans
February - 2
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Open cluster Melotte 25 - "the Hyades" in Taurus
Galaxy cluster Abell 754 in Hydra
February - 1
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Galaxy pair Vorontsov-Vel'yaminov 528 (MCG+06-17-002 & PGC200234) in Gemini
January
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Open cluster Collinder 70 - "Orion's Belt" in Orion
Reflection nebula Sazhen 30 in Orion
Galaxy Abell 11 (2MASX J05372154+0815290) in Orion
