Ha data | 0bject | B173 and 174 Dark nebulae in Cepheus (CED 199, lower left) |
| Date | September 30 - October 2, 2015 |
| Exposure | HαRGB 645:60:60:60 (cropped; 13.75 hours) |
| 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 CS6, AstroActions, NIK Dfine2 |
| Comments | Moderate to good seeing with moonlight; acquired with CCD Commander |