[davidpretorius]

Hi,

The new big fan sucking air from the surface of an icepack onto the back of the mirror, got my temps within 1.5 degree, so I thought I would get some collimation pics.

I have defocussed outwards and inwards on Alnitak mag 1.71. I have stacked say 80 to 100 frames.

I would love some opinions on these images. I have my own thoughts on adjustments, but would appreciate your input as well.

First image is the defocussing inwards and the second is the defocussing outwards.

Magnification is 208x