Quote:
Originally Posted by DavidTrap
I have the both. Haven't yet used the flattener, but thought it might give me the option of a slightly longer focal length that might suit some objects.
I assume that the flattener will be needed for the full frame sensor I have.
DT
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Yes defintely.
Also the spacing for the Quad is extremely sensitive. I spent another couple of hours on it last night and got it to ideal. But just a few mm wrong gives you rather bad corner stars with the QHY600.
Those 1mm thick spacer rings AP sells are essential.
Expect to take a while.
Greg.