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Originally Posted by Don Pensack
Coma is produced by the primary mirror, not the eyepiece.
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I have read of this. The spot diagrams would appear to indicate that this is so. I have also read that coma is not produced by the mirror, rather by the inability of the ocular to handle the fast light cone.
Quote:
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Originally Posted by Don Pensack
I do see that individual perception plays a role in the visibility of coma. Some people see it at f/6, others not even at f/4. Why, I can't say.
Don
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individual variation plays a big factor in what we preceive.