Deep Sky Forum's
Objects of the Week - 2026
Observing Guides in all four CSOG image orientations for Deep Sky Forum's Objects of the Week in the year 2026; no OotW was posted in week 13.
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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Deep Sky Forum's Objects of the Week
An index file, AstroPlanner planfile and Tour files by constellation and object category for all Deep Sky Forum's Objects of the Week posted since 2012.
These downloads will be updated weekly.
Updated: 13 April 2026
Index files: 1
AstroPlanner planfiles: 1
Autostar Tours / NexTours / EQTours: 205
Argo Navis User Catalogs: 206
Observing guides for the current year can be downloaded below. Observing guides for preceding years can be downloaded on the respective pages:
2012 - 2013 - 2014 - 2015 - 2016 - 2017 - 2018 - 2019 - 2020 - 2021 - 2022 - 2023 - 2024 - 2025
Week 15
Galaxy NGC3310 (Arp 217) - the "Bow and Arrow Galaxy" in Ursa Major
This object is included in CSOG's:
Constellation editions by telescope aperture
Herschel edition
Arp Peculiar Galaxies edition
Burnham's Celestial Handbook - DSO's edition
Named Objects edition
Herschel 400 observing program
Texas Star Party 2025 Regular Observing Program
Deep Sky Forum's Objects of the Week 2019 - Week 3
Week 14
Galaxy pair Arp 305 (NGC4016 & NGC4017) in Coma Berenices
Week 12
Galaxies Messier 81 (NGC3031) - "Bode's Nebula(e)" & Holmberg IX in Ursa Major
Week 11
Galaxy Messier 63 (NGC5055) - the "Sunflower Galaxy" in Canes Venatici
Week 10
Galaxy NGC2684 & galaxy group Vorontsov-Vel'yaminov 765 in Ursa Major
Week 9
Globular cluster NGC3201 in Vela
Week 8
Reflection nebula Courtès 123 - the "Epsilon Orionis Nebula" in Orion
Week 7
Galaxy NGC2337 in Lynx
Week 6
Planetary nebula Henize 2-7 in Vela
Week 5
Click here to review the CSOG image orientations
Unmirrored
MH
MV
MHV
Galaxy PGC24283 in Ursa Major
Galaxy PGC139147 in Ursa Major
Week 4
Galaxy NGC1222 (Vorontsov-Vel'yaminov 1064) in Eridanus
Week 3
Galaxy pair Arp 276 (NGC935 & IC1801) in Aries
Week 2
Galaxy NGC2859 in Leo Minor
Week 1
Galaxy NGC1016 in Cetus
