M27
Photo description / processing
Sighting-in at the end of the white nights.
The goal was to test the OIII 4nm filter, which the Chinese sent as a replacement for a defective one. It works.
At a focal length of 2350mm, the Juwei 17 produces more than 50% rejects, but I managed to select frames with FWHM 2.5-3" totaling about an hour.
During processing, the visually apparent depth was pleasing.
Technical information
- Telescope/Lens
- Celestron C9.25
- Camera
- ToupTek ATR2600M
- Mount
- Juwei 17 (мод. двигатели 400 шагов)
- Guide Scope
- Svbony 90/500
- Guide Camera
- Asi178m
- Accessories
- Фильтры Touptek SOH
- Software
- APT, Siril, SETI
- Location
- Ленинградская область, Мшинская, Россия
Light pollution
Green, Bortle 4 zone
- Date taken
Exposure
- 16 × 120″ · ISO/Gain: 158 · Ha 4nm ·
- 13 × 120″ · ISO/Gain: 158 · Oiii 4nm ·
Total exposure: 58 m
Comments
Reply
Sign up or sign in to leave a comment.
Reply
Sign up or sign in to leave a comment.
Sign up or sign in to leave a comment.