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M 15 in Pegasus is one on the nicest globular
clusters of the sky: it's characteristic is to be very compact and with
a bright nucleus.
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| Optics | Pentax 75 apochromatic refractor |
| Focal Lenght | 500 mm |
| Focal Ratio | f/6,7 |
| Exposure Time | 45 min |
| Film | Kodak E200 |
| Developement sensibility | 320 ISO |
| Location | Capanne di Cosola (AL, on the Appennines, Italy) at 1500m |
| Date and time of exposure start | 25 october 2003, 18.30 UT |
| Mount | Gemini G41 |
| Tracking | ST4 |
| Temperature and humidity | T=-4°C, RH=44% |
| Notes | - |
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