woodblock Posted November 5, 2022 Share Posted November 5, 2022 Some time ago I posted a problem I had with slightly elongated stars. A characteristic of this was that satellite trails across a frame showed a distinct and very even sinusoidal path. To cut a long story short I've now discovered that it was caused by a slight vibration which was due to some of the screws on the mount and telescope being slightly loose. The scope is a Newtonian and the first problem was that one of the locking screws on the mirror was loose. I found this while adjusting the collimation. The second problem was one of the grub screws holding the mounting plate on which the dovetail bar sits was also slightly loose. I had previously fitted a new, wider mounting plate. Anyway the moral is "Keep your screws and bolts tight". Cheers Steve 3 Quote Link to comment Share on other sites More sharing options...
woodblock Posted November 10, 2022 Author Share Posted November 10, 2022 For future reference this is what my satellite trail looked like in case someone ever has the same problem. Quote Link to comment Share on other sites More sharing options...
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