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Gluing the lens to retaining ring was successful, now I can vary the position of the assembly and see if coma can be improved by increasing the distance between elements.. If it gets worse, I will try to reduce their distance by machining the barrel by ~1mm or so..
In the meantime I tried the lens w/o field assembly on the Moon last night..
The focal length of the system is reduced from 500m to 278mm (from f/6.3 to f/3.5).
This could be useful for guiding.. maybe.
Last edited by bojan; 11-09-2024 at 02:59 PM.
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