On April 16, the sky conditions were good enough to tackle the fine backfocus adjustment on my SkyEye24AC. As a reference, I used my SkyEye62AM, which I had fully calibrated about a month earlier.
After successfully completing the adjustment, I still had time to capture 15 individual exposures. I think the result turned out quite nicely.
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 | SkyEye24AC |
| 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 | 2026-04-16 |
| Exposure (lights) | UHC: 15 × 300 s |
| Total integration | 1 h 15 min |
| Calibration frames | FLATS, DARKS |
| Sensitivity | GAIN 100, Offset 125 |
| Capture setup | Stellarmate OS, Raspberry Pi 5, PowerBox Adv. |
| Processing date | 2026-04-17 |
| Software stack | PixInsight, Affinity Photo |
| Location | Koblenz |
| Focal ratio | f/6,2 |
| Image scale | 2,08 ″/px |
| Field of view | 210,2 × 140,1 ′ |
