| Object | NGC 4559 Spiral galaxy in Coma Berenices |
| Date | April 8-12, 2012 |
| Exposure | LRGB 200:130:130:130 (cropped) |
| Camera | STL11000M with AstroDon Gen II filters (water assisted cooling) |
| Telescope | ASA 10N f/3.7 on AP900GTO CP3 |
| Guiding | External guide head with 50mm MiniBorg |
| Processing | MaximDL, Photoshop CS5, GradientXterminator, AstroActions |
| Comments | Warm for the time of year. |