Quote:
Originally Posted by philiphart
perhaps it is a reflection between the sensor glass and the filters? i wonder if marco and you have the same filters in your FLIs?
|
Correct. I too believe it's something very close to the sensor. My guess would be light that bounces back and forth on to the large glass corrector inside the drawtube reflecting back to a piece of glass that is closer to the CCD. It'd be good if Mike could post a cross section of his imaging train at the focuser level and post it. I'm sure somebody will analyse the light path and pinpoint the problem. JasonD's (Catseye whiz) is pretty good at raytracing.