Webb Deep-Sky Society's
Objects of the Month - 2021
Observing guides for the Webb Deep-Sky Society's galaxy, nebula, star cluster and double stars of the month in the year 2021.
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 Webb-site. Please read Downloading CSOG and iPad Astronomy.
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Download - 2021
All the Webb Deep-Sky Society's Objects of the Month for the year 2021.
Observing guides (pages): 65 (143)
Index files: 1
AstroPlanner planfiles: 1
10 open clusters
3 globular clusters
2 nebulae
10 planetary nebulae
5 galaxies
6 galaxy groups
1 galaxy cluster
2 asterisms
26 double stars
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January 2021
Galaxy of the Month
Galaxy group Holmberg 124 in Ursa Major
Star Clusters of the Month
Open cluster NGC2158 in Gemini
Open cluster Messier 35 (NGC2168) in Gemini
Nebula of the Month
Reflection nebula NGC2261 - "Hubble's Variable Nebula" in Monoceros
Double Stars of the Month
32 Orionis (STF728 - WDS05308+0557) in Orion
"Mintaka" - Delta Orionis (STFA14 - WDS05320-0018) in Orion
February 2021
Galaxy of the Month
Galaxy group WBL 142 in Gemini
Star Cluster of the Month
Nebula of the Month
Planetary nebula NGC2610 in Hydra
Double Stars of the Month
Phi-2 Cancri (STF1223 - WDS08268+2656) in Cancer
Upsilon Cancri (STF1224 - WDS08267+2432) in Cancer
Pi Puppis (Dunlop 43 - WDS07171-3706) in Puppis
March 2021
Galaxy of the Month
Star Cluster of the Month
Asterism NGC3231 in Ursa Major
Nebula of the Month
Planetary nebula NGC3242 - the "Ghost of Jupiter" in Hydra
Double Stars of the Month
STF1426 (WDS10205+0626) in Leo
Burnham 208 (WDS08391-2240) in Pyxis
April 2021
Galaxy of the Month
Galaxy pair NGC3636 & NGC3637 in Crater
Star Cluster of the Month
Globular cluster Messier 3 (NGC5272) in Canes Venatici
Nebula of the Month
Planetary nebula IC3568 - the "Lemon Slice Nebula" in Camelopardalis
Double Stars of the Month
35 Sextantis (STF1466 - WDS10433+0445) in Sextant
Cape Observatory 12 (WDS12283-6146) in Crux
May 2021
Galaxy of the Month
Star Cluster of the Month
Globular cluster NGC5634 in Virgo
Nebula of the Month
Planetary nebula NGC6058 in Hercules
Double Stars of the Month
1 Boötis (STF1772 - WDS13407+1957) in Boötes
June 2021
Galaxy of the Month
Star Cluster of the Month
Globular cluster Messier 107 (NGC6171) in Ophiuchus
Nebula of the Month
Planetary nebula NGC6210 - the "Turtle Planetary Nebula" in Hercules
Double Stars of the Month
STF1972 (WDS15292+8027) in Ursa Minor
Herschel VI 51 (WDS14576-0010) in Virgo
Burnham 348 (WDS15018-0008) in Virgo
July 2021
Galaxy of the Month
Star Cluster of the Month
Open cluster NGC6633 - the "Wasp-Waist Cluster" in Ophiuchus
Nebula of the Month
Planetary nebula NGC6742 in Draco
Double Stars of the Month
STF2244 (WDS17571+0004) in Ophiuchus
Kappa-2 Coronae Australis (Dunlop 222 - WDS18334-3844) in Coronae Australis
August 2021
Galaxy of the Month
Galaxy pair NGC6658 & NGC6661 in Hercules
Star Cluster of the Month
Open cluster NGC6940 - the "Mothra Cluster" in Vulpecula
Nebula of the Month
Planetary nebula NGC7008 - the "Fetus Nebula" in Cygnus
Double Stars of the Month
STT358 (WDS18359+1659) in Hercules
"Arkab Prior" - Beta-1 Sagittarii (Dunlop 226 - WDS19226-4428) in Sagittarius
September 2021
Galaxy of the Month
Galaxy group Holmberg 802 in Pegasus
Star Cluster of the Month
Open cluster Mayer 1 & emission nebula Simeis 21 in Cassiopeia
Nebula of the Month
Planetary nebula NGC7354 in Cepheus
Double Stars of the Month
STF2883 (WDS22106+7008) in Cepheus
Harvard 298 (WDS22183-5338) in Grus
October 2021
Galaxy of the Month
Galaxies NGC870, NGC871, NGC876 & NGC877 in Aries
Star Cluster of the Month
Open clusters NGC133, NGC146 & King 14 in Cassiopeia
Nebula of the Month
Planetary nebula NGC246, the "Skull Nebula" in Cetus
Double Stars of the Month
STF3053 (WDS00026+6606) in Cassiopeia
STF3008 (WDS23238-0828) in Aquarius
November 2021
Galaxy of the Month
Galaxy cluster Abell 347 in Andromeda
Star Cluster of the Month
Open cluster NGC1245 - the "Patrick Starfish Cluster" in Perseus
Nebula of the Month
Planetary nebula IC2003 in Perseus
Double Stars of the Month
Phi Andromedae - STT515 (WDS01095+4715) in Andromeda
66 Ceti - STF231 (WDS02128-0224) in Cetus
December 2021
Galaxy of the Month
Star Cluster of the Month
Open cluster and emission nebula NGC1624 in Perseus
Nebula of the Month
Emission nebula NGC1579 - the "Northern Trifid Nebula" in Perseus
Double Stars of the Month
STT65 (WDS03503+2535) in Taurus
Dunlop 15 (WDS03398-4022) in Eridanus
