Deep Sky Forum's
Objects of the Week - 2021
Observing Guides in all four CSOG image orientations for Deep Sky Forum's Objects of the Week in the year 2023.
Use the buttons to download the Observing Guides, click the object's name to visit the corresponding post on Deep Sky Forum. Please read Downloading CSOG and iPad Astronomy.
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Download - 2021
All Deep Sky Forum's Objects of the Week for the year 2021.
Click here to review the CSOG image orientations
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MV
MHV
2021 - Week 1
Galaxy NGC891 - the "Silver Sliver Galaxy" in Andromeda
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Named Objects edition
2021 - Week 2
Reflection nebula IC2169 - "Dreyer's Nebula" & open cluster Collinder 95 in Monoceros
Click here for the Constellation editions
Click here for the Named Objects edition
2021 - Week 3
Galaxy NGC2523 (Arp 9) in Camelopardalis
Click here for the Arp Peculiar Galaxies edition
2021 - Week 4
Galaxy Holmberg II (Arp 268) in Ursa Major
Click here for the Holmberg Galaxies edition
2021 - Week 5
Emission nebula NGC1491 - the "Fossil Footprint Nebula" in Perseus
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Named Objects edition
2021 - Week 6
Galaxy group KPG 132 - NGC2336 & IC467 in Camelopardalis
Click here for the Constellation editions
2021 - Week 7
Open cluster Messier 44 (NGC2632) - "Praesepe" & background galaxies in Cancer
Click here for the Messier edition
Click here for the Named Objects edition
2021 - Week 9
Galaxy NGC2537 (Arp 6) - the "Bear Paw Galaxy" in Lynx
Click here for the Arp Peculiar Galaxies edition
Click here for the Herschel edition
Click here for the Named Objects edition
2021 - Week 11
Galaxy group Hickson 44 - the "Gamma Leonis Group" in Leo
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Arp edition
Click here for the Named Objects edition
2021 - Week 14
Galaxy Cluster Abell S636 - the "Antlia Group" in Antlia
Click here for the Named Objects edition
2021 - Week 15
Galaxies NGC3786 & NGC3788 - Arp 294 in Ursa Major
Click here for the Arp Peculiar Galaxies edition
Click here for the Holmberg Double and Multiple Galaxies edition
2021 - Week 16
Galaxy NGC5474 & HII region PGC2448110 in Ursa Major
Click here for the Constellation editions
Click here for the Herschel edition
2021 - Week 20
Galaxy group Arp 111 (Vorontsov-Vel'yaminov 120) - the "Flying Ant Galaxy" in Canes Venatici
Click here for the Arp Peculiar Galaxies edition
Click here for the Holmberg Double and Multiple Galaxies edition
Click here for the Named Objects edition
2021 - Week 23
Globular cluster NGC5694 in Hydra
Click here for the Constellation editions
Click here for the Herschel edition
2021 - Week 24
Galaxy MCG-05-31-039 - "Hardcastle's Nebula" in Centaurus
Click here for the Constellation editions
Click here for the Named Objects edition
2021 - Week 25
Galaxy group Arp 302 - the "Exclamation Mark Galaxies" in Boötes
Click here for the Arp Peculiar Galaxies edition
Click here for the Named Objects edition
2021 - Week 26
Planetary nebula NGC6894 in Cygnus
Click here for the Constellation editions
Click here for the Herschel edition
2021 - Week 29
Planetary nebula Henize 3-1475 - the "Garden Sprinkler" in Sagittarius
Click here for the Named Objects edition
2021 - Week 30
Emission nebula Minkowski 1-88 - "the Egg" in Serpens (Cauda)
Click here for the Minkowski edition
2021 - Week 31
Globular cluster Messier 55 (NGC6809) - the "Specter Cluster" in Sagittarius
Click here for the Constellation editions
Click here for the Lacaille edition
Click here for the Named Objects edition
2021 - Week 32
Globular clusters Terzan 7 & 8 in Sagittarius
Click here for the Terzan globular clusters edition
2021 - Week 34
Globular cluster NGC7492 in Aquarius
Click here for the Constellation editions
Click here for the Herschel edition
2021 - Week 35
Galaxy group Holmberg 820 (KTG 82, KPG 592) in Pegasus
Click here for the Holmberg Double and Multiple Galaxies edition
Click here for the KTG edition
2021 - Week 37
Supernova remnant the "Veil Nebula" in Cygnus & Vulpecula
Click here for the Veil Nebula edition
2021 - Week 38
Planetary nebula NGC7354 in Cepheus
Click here for the Constellation editions
Click here for the Herschel edition
2021 - Week 39
Galaxy MCG-06-07-001 - "Fornax Dwarf Galaxy" & globulars in Fornax
Click here for the Constellation editions
Click here for the Named Objects edition
2021 - Week 41
The "Gamma Cassiopeiae Nebulae" in Cassiopeia
Click here for the Constellation editions
Click here for the Named Objects edition
2021 - Week 43
Click here for the Constellation editions
Click here for the Trumpler open clusters edition
2021 - Week 47
Open cluster NGC7789 - "Caroline's Rose" in Cassiopeia
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Named Objects edition
Click here for the Collinder star clusters edition
Click here for the Melotte star clusters edition
Click here for the Raab open clusters edition
2021 - Week 49
Reflection nebula NGC1999 - the "Keyhole Nebula" and Herbig-Haro 1, 2, 3, 36 & 130 in Orion
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Named Objects edition
2021 - Week 50
Galaxy pair Arp 166 in Triangulum
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Arp Peculiar Galaxies edition
2021 - Week 52
Galaxy NGC474 (part of Arp 227) in Pisces
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Arp Peculiar Galaxies edition
Click here for the KTG edition
