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The ion tail start to widen, and the same
the dust tail. The cause is the change of the geometric caracteristics
of Earth-Sun-comet.
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| Optics | Photographical objective |
| Focal Lenght | 200 mm |
| Focal Ratio | f/3,5 |
| Exposure Time | 2 min |
| 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 | 30 april 1997, 20.40 UT |
| Mount | Meade 2080 |
| Tracking | Manual |
| Notes | Rescanned in 2002 |
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