Quote:
Originally Posted by avandonk
Absolutely accurate polar aligning is essential for wide fields to not get rotation. When autoguiding the guide camera and imaging camera have to be very well aligned. In fact if both are well aligned any rotation tells you polar alignment is off.
This does not matter with RegiStar as it uses all the stars to align.
bert
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Thanks Bert, you've done a good job.
The Scope and Guidescope are aligned, and polar alignment is spot on. But this image was taken with a 6-60mm zoom lens attached to the Toucam and then held onto the guidescope with rubber bands. No guiding was used. I just relied on the mounts tracking. I've done this a few times before but this is the 1st time I have had field rotation.
Quote:
Originally Posted by Doug
Ken, how sure of the lens quality? or how sure are you that the mount/adapter has it square to the web cam?
I've aligned combined the 8 images in MaxDslr and it looks a bit more like a lens issue to me.
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The lens is good quality, but I can't be 100% sure of its squarness to the chip. It is a slap-up job.

But would that cause field rotation?