|
tweaking MPCC spacings
I've calculated the spacings between my QSI583ws and MPCC and got a 20mm spacer. The calcs take into consideration all of the theoretical dimensions etc, and all I could do was average the tolerances. My images are close, but don't think the spacing is quite right. Still some coma in corners. I assume it's only out by a millimetre or 2.
Trying to figure out whether I need to go in or out. The coma that's appearing in the corners has the thicker "head" part towards the centre of the image, and the "tail" heading out. Can you tell whether my spacing needs to be increased or decreased by that, or is it just trial and error?
|