An uneventful session under a nearly full moon. So the focus here isn’t on an artistically valuable photo, but on adding another object to my Caldwell catalog.
High-resolution on Astrobin:
The annotated image:
Session details
| Telescope | Baader Apo 95 CaF2 – Travel Companion |
|---|---|
| Corrector | Baader M68 Field Flattener |
| Effective focal length | 590 mm |
| Camera | Canon EOS R(a) |
| Filters | Baader UHC-L CMOS Optimized 50,4mm |
| Mount | Skywatcher HEQ5 Pro Hypertuned |
| Guiding equipment | William Optics Uniguide 50 |
| Guiding camera | ToupTek GPM462M |
| Date of capture | 2026-03-02 |
| Exposure (lights) | UHC: 31 × 300 s |
| Total integration | 2 h 35 min |
| Calibration frames | FLATS, DARKS |
| Sensitivity | ISO 1600 |
| Capture setup | Stellarmate OS, Raspberry Pi 5, PowerBox Adv. |
| Processing date | 2026-03-11 |
| Software stack | PixInsight, Affinity Photo |
| Location | Koblenz |
| Focal ratio | f/6,2 |
| Image scale | 1,87 ″/px |
| Field of view | 209,4 × 139,6 ′ |
