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The Double Cluster in Perseus is one of the nicest object visible in a binocular, expecially from dark skys, where the stars resemble diamonds on a dark background. The east cluster is catalogued as NGC 884, while the ovest cluster NGc 869. On the left border of the image is present the open cluster NGC 957. All those clusters are immersed in the stellar field of the Milky Way, rich in stars.
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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 | Colle del Nivolet (AO, on the Alps, Italy) at 2600m |
| Date and time of exposure start | 5 october 2002, 23.18 UT |
| Mount | Gemini G41 |
| Tracking | ST4 |
| Temperature and humidity | T=0°C, RH=61% |
| Notes | - |
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