I can not describe it with words how happy I am that I finally managed to collimate my VISAC astrograph. OSC and 1800mm is the way to work on my Messier Catalog.
Session Analysis
The session was flawless with average guiding.
Full resolution on Astrobin:
Whats on the picture:
So many background galaxies in this Messier 106 field of view. Beside the countless PGC Catalog galaxies there are the NGC objects NGC 4231, NGC 4232 and NGC 4248.
Session details
| Telescope | Vixen VC200L |
|---|---|
| Corrector | intern |
| Effective focal length | 1800 mm |
| Camera | Canon EOS R(a) |
| Mount | Skywatcher HEQ5 Pro Hypertuned |
| Guiding equipment | APM 240mm |
| Guiding camera | ToupTek GPM462M |
| Date of capture | 5 March 2025 |
| Exposure (lights) | 40 × 300 s |
| Total integration | 3 h 20 min |
| Calibration frames | FLATS, DARKS, BIAS |
| Sensitivity | ISO 1600 |
| Capture setup | Stellarmate OS, Raspberry Pi 5, PowerBox Adv. |
| Processing date | 7 March 2025 |
| Software stack | PixInsight, Affinity Photo |
| Location | Koblenz |
| Focal ratio | f/9,0 |
| Image scale | 0,61 ″/px |
| Field of view | 68,3 × 45,5 ′ |
