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Old Wednesday 23rd January 2019, 15:19   #63
henry link
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Join Date: Feb 2004
Location: north carolina
Posts: 4,386
Quote:
Originally Posted by james holdsworth View Post
I've often wondered about conflicting CA reports. Yes, I'm aware of how individual this is, but is there an aspect of binocular construction [or mis-construction / poor QA] that could cause higher than typical [for that model] CA?

Internal alignment etc?
Yes, internal misalignment leading to coma will cause lateral color to be asymmetrical with the null point falling somewhere off-axis, which can cause significant color to appear on axis. That's not the case with this particular 10x32 which in a high magnification star test shows no significant coma in either side.

Last edited by henry link : Wednesday 23rd January 2019 at 15:28.
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