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 |
| Focal Length | 1800mm |
| Erecting Lense | – |
| Camera | Canon EOS R(a) |
| Filter | Bayer Matrix RGGB |
| Mount | Skywatcher HEQ5 Pro, Belt and Hypertuned |
| Guiding Equipment | APM 240mm Guidescope |
| Guiding Camera | ToupTek GPM462M |
| Photography Date | 03/05/2025 |
| Exposure-Time Lights | 40x300s |
| Correction frames | FLATS, BIASES, DARKS |
| Sensitivity | ISO 1600 |
| Processing Date | 03/07/2025 |
| Software Stack | Stellarmate OS, PixInsight, Affinity Photo |
| Capture Place | Koblenz, Germany |