Hα data | 0bject | Sh2-173 Emission nebula in Cassiopeia (NGC 103, Mayer 1) |
| Date | October 29-31, 2012 |
| Exposure | HαRGB 720;30:30:30 (cropped) |
| Camera | STL11000M with AstroDon Gen II filters (water-assisted cooling) |
| Telescope | ASA 10N f/3.7 on AP900GTO CP3 |
| Guiding | Remote guide head with MiniBorg 50 mm |
| Processing | MaximDL, Photoshop CS5, AstroActions |
| Comments | Moderate seeing; shot during full moon; acquired with CCD Commander |