WO ZennithStar ED80ii
So I have a Tele Vue TRF 2008 focal reducer that should have a back spacing of 56mm. My current imaging train is the standard one on ZWO's website with the 16.5mm extender, 11mm ring, T2-T2 2mm adapter, EFW, then the camera for a distance of 56mm +/- 1mm for a filter.
However, I seem to be getting some Coma in my images. Is this because my distance is too much, or too little? My thinking is that I am too far back by around 1 or 2mm. Below is an example from a test shot I did.
Before I just blindly start adjusting, I figured someone would be able to tell me if I need more or less distance.
Edited by CrossAerialPhotography, 14 September 2020 - 10:01 PM.