| object | galaxy NGC 6946 and open cluster NGC 6939 |
| constellation | Cygnus, the swan |
| equipment | ASA Astrograph 10" at f/2,8, Astro modified Canon EOS 40D |
| exposure | 10 x 300 sec (stars) and 36 x 300s (galaxy) at 800 ASA unguided |
| date | June 05, 2010 Engelhardsberg Germany |
| conditions | stars to 5m5, no astronomical twilight in June, later on moon above horizon |
| image processing | DeepSkyStacker 3.3.2, Photoshop CS4, PixInsight 1.6 |
| remarks | The best 10 subframes were used to stack the stars, and all 36 subframes were used to stack the galaxy. This gave small, sharp stars and less noise in galaxy NGC 6946. |