The shape of the black dot looks very close to being in focus (to me) I wonder if holding an eyepiece upto the camera lens & shooting off some frames would get me closer to working out where this dust actually is? In the mean time, heres 2 pics of blue sky, 1 no zoom 1 full zoom..I can't see anything abnormal..
Hi RB. The second spot, (not shown in the mars pic) just materialized over night so to speak.....I'm still suspecting my eyepieces somehow.
