America in the gap
Photo description / processing
Finally got around to roughly calculating how many focuser steps to shift for focus on either the R or GB channels.
Technical information
- Telescope/Lens
- Samyang 135mm f/2 ED UMC
- Camera
- Canon EOS 60Da
- Mount
- iOptron SkyTracker Pro
- Accessories
- SVBONY CLS Filter
- Software
- Siril, StarNet, Adobe Photoshop
- Location
- Perm, Russia
Light pollution
Red, Bortle 7 zone
- Date taken
Exposure
- 30 × 30″ · ISO/Gain: 640 · f/2 R ·
- 20 × 30″ · ISO/Gain: 640 · f/2 GB ·
Total exposure: 25 m
Comments
There are no comments on this photo yet.
Sign up or sign in to leave a comment.