Astrotreff's
Objects of the Month - 2021
Observing Guides in all four CSOG image orientations for Astrotreff's Objects of the Month in the year 2023.
Use the buttons to download the Observing Guides, click the object's name to visit the corresponding page on the Astrotreff forum. Please read Downloading CSOG and iPad Astronomy.
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Download - 2021
All of Astrotreff's Objects of the Month for the year 2021.
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
January 2021
Emission nebula NGC2359 - "Thor's Helmet" in Canis Major
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Named Objects edition
February 2021
Galaxies NGC1618, NGC1622 & NGC1625 - the "Eridanus Triplet" in Eridanus
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Holmberg Double and Multiple Galaxies edition
Click here for the Named Objects edition
March 2021
Supernova Remnant IC443 - the "Jellyfish Nebula" in Gemini
Click here for the Constellation editions
Click here for the Named Objects edition
April 2021
Galaxy pair Arp 84 (NGC5394 & NGC5395) - "the Heron" in Canes Venatici
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Holmberg Double and Multiple Galaxies edition
Click here for the Named Objects edition
May 2021
Galaxy pair Arp 270 (NGC3395 & NGC3396) in Leo Minor
Galaxy pair Arp 206 (NGC3432 - the "Knitting Needle Galaxy" & MCG+06-24-027) in Leo Minor
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Arp Peculiar Galaxies edition
Click here for the Holmberg Double and Multiple Galaxies edition
June 2021
Planetary nebula NGC6309 - the "Box Nebula" in Eridanus
Click here for the Constellation editions
Click here for the Named Objects edition
July 2021
Emission nebula NGC6888 - the "Crescent Nebula" in Cygnus
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Named Objects edition
August 2021
Click here for the Constellation editions
Click here for the Collinder Star Cluster edition
Click here for the Melotte Star Cluster edition
Click here for the Named Objects edition
September 2021
Planetary nebula NGC6826 - the "Blinking Planetary" in Cygnus
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Named Objects edition
October 2021
Planetary nebula Messier 76 (NGC650 & NGC651) - the "Little Dumbell Nebula" in Perseus
Click here for the Constellation editions
Click here for the Messier edition
Click here for the Herschel edition
Click here for the Named Objects edition
November 2021
Galaxy pair Holmberg 796 (NCC7332 & NGC7339) in Pegasus
Click here for the Constellation editions
Click here for the Herschel edition
Click here for the Holmberg Galaxy Groups edition
December 2021
Reflection nebula IC349 - "Barnard's Nebula" in Taurus
Click here for the Constellation editions
Click here for the Named Objects edition
