ChristerS Posted September 4, 2015 Report Share Posted September 4, 2015 Hi, I have an elongated star effect with my ASA 12N and the Wynne 0.95 I have made some test, by moving focus inside-outside good focus, and start to suspect there could be astigmatism in the system (out of focus elongated stars with 90 degree difference). Have anyone else notices this behavior? I will switch to the 0.73 reducer, when weather allows, and see how it behaves. All images 2 sec exposure Atik 490EX good collimation according to Glatter laser and tublug Regards, Link to comment Share on other sites More sharing options...
-Amenophis- Posted June 3, 2019 Report Share Posted June 3, 2019 Hello, Out of curiosity, has the problem been solved? What was the problem? Link to comment Share on other sites More sharing options...
ChristerS Posted June 3, 2019 Author Report Share Posted June 3, 2019 Hi, The issue was solved by replacement of secundary mirror by ASA. Link to comment Share on other sites More sharing options...
-Amenophis- Posted June 4, 2019 Report Share Posted June 4, 2019 (edited) I'll have to look at that too. I will do the same procedure. Edited June 4, 2019 by -Amenophis- Link to comment Share on other sites More sharing options...
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