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Old 22-09-2020, 10:41 AM
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PKay (Peter)
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PKay is offline
 
Join Date: May 2017
Location: DEPOT BEACH
Posts: 1,643
Explain this please!

Here are two images.
At first I thought the artefact beside Alnitak was caused by a rain drop on the primary.

If that was the case, when I slewed the target, the artefact would have stayed in the same place.
However, it has moved with the star!
Attached Thumbnails
Click for full-size image (barnard 33_60sec_1x1__0001_red.jpg)
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Click for full-size image (barnard 33_60sec_1x1__0011_red.jpg)
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