| Telescope | MDM 1.3m |
| Date | 9/28/95 |
| Instrument | Nellie |
| Filter | V |
| Exposure Time |
2 sec |
Problem:This was just a 2 sec exposure of a bright star to be used for checking the pointing of the telescope. High humidity over 3 days had allowed for water to condense at the center of the dewar window. The light of this star is being refracted by the water droplets on the dewar window. |
Fix:Observatory dependent. |