Quote:
Originally Posted by Paul Haese
Have you checked the mirror clips and the rear collimation screws Geert? The causes of pinched optics in these scopes can be the central baffle tightness, the mirror clips touching the primary and over tightening of the rear collimation screws. I have it on good authority that silicone cannot cause pinched optics because it is pliable and does not act as a brace. It is not stiff enough to cause problems.
So check your rear screws too. Those should be firm but not over tightened.
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Hello Paul.
I left a lot of space between the mirror an the clips 1/2mm or so. I was able to move the mirror in the cell. (so dont think silicone is the cause).
Also the rear screews were only fastened enough to hold the cell in position.
I am thinking my mirror was pinched during factoring...
I have not disassembled de secondary mirror cell. this mirror is retained in its cell with a screwed metal ring. Any experience with this?.
Regards
Geert