- 28mm or wider
- 80mm Users (+/- 10mm)
- Amateur Astro-Photography
- Amateur Astronomy
- APOD Submissions
- Astro For Fun
- astrometry
- Astrophotography - Astronomy - Astrophysics
- Astrophotography - The Solar System and Beyond
- Astrophotography with a Dobsonian
- AstroTrac photography
- Atmospheric Optics, and Rare Clouds
- BBC Sky at Night and Stargazing Live
- Canon 6D User Group
- Canon DSLR User Group
- Canon EOS 550d
- DAYSTAR FILTERS
- EAPOD
- Eclipse Chasers
- Eclipses
- Galaxies & Stars Group ( Planets, Moons & Comets too!)
- Geminid Meteors
- in explore
- Insight Astronomy Photographer of the Year
- Into the Night Photography
- Landscape Astrophotography
- Long Exposures
- Meteors
- Meteorwatch
- MOON Shots
- Moon Watch
- Moon/Luna
- Narrowband Astrophotography
- Noctilucent clouds
- Perseid Meteor Shower
- PhotographingSpace.com
- Pictures Of The International Space Station (ISS)
- Rokinon 85mm, f1.4 and related lenses.
- Samyang / Rokinon 135mm f/2.0 Lens
- Samyang 14mm F/2.8
- Sky Magic
- Solar Astrophotography
- Solar Eclipse 2017 USA
- Space Station
- Star Trails
- StarStaX - Image stacker for Mac / Windows / Linux
- Total Solar Eclipse 2017 - NASA
- Universe Today
- Wide Field Astrophotography - Starry Skies