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Hi Joshua,
I have a 10inch F4 reflector and my kit isn't anywhere nearly as rigid as yours, but I too have noticed something similar. Its visible even when focusing with 300ms exposures.
in my case it was always along the E-W direction or in RA and when pointing low.
I thought it could've been mirror slop or secondary flex or collimation as mine's an F4, but interesting to hear your issue.
Do they appear in short exposures as well, like 300 or 500ms when focusing?
do you have any examples?
Cheers
Alistair
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