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This night the ion tail is superimposed
on the Perseus Double Cluster.
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Optics | Photographical objective |
Focal Lenght | 55 mm |
Focal Ratio | f/2,8 |
Exposure Time | 1 min 30 sec |
Film | Scotch Chrome 800-3200 |
Developement sensibility | 3200 ISO |
Location | San Martino (VA, on the Italian Prealps) at 1083m |
Date and time of exposure start | 2 april 1997, 19.30 UT |
Mount | Meade 2080 |
Tracking | Manual |
Notes | Rescanned in 2002 |
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