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NGC 2903, in Andromeda, is an edge-on spiral
galaxy.
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| Optics | 20cm Meade Schmidt-Cassegrain Telescope |
| Focal Lenght | 1300 mm with Meade 0.63x reducer |
| Focal Ratio | f/6.6 |
| Exposure Time and filters | LRGB 60:20:20:20 (single exposures of 5 min) |
| CCD | FLI ME2 |
| Sensor | Kaf-402me grade 2 |
| Chip temperature | -30°C |
| Location | Tradate (VA, in Pianura Padana, Italy) at 300m |
| Date and time of exposure start | 3 january 2005, 19.17 UT |
| Mount | Gemini G41 |
| Tracking | ST4 |
| Temperature and humidity | T=+3°C, RH=44% |
| Notes | - |
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