When i get pinpoint stars at the center of the field, i get such a poor covering of the stars in the corners, I am using a full frame sensor canon EOS R6. Imaging the Western Veil nebula for context. The image is a stack of 109 x 60 seconds, so there is a little star trailing, but inconsequential to the corners. Anything i can do to improve the image quality across the field with this reducer? Perhaps i thought the spacing between the camera and the reducer is too close rather than the camera with respect to the primary lens. Not sure. Help would be appreciated.
