apcc and refraction

Dave Goodyear <dave@...>

Hey Ray.

Not sure if you want this in the new support system. If so, let me know and
I will port it over.

My pointing model is 260 points (about 15 bad points) with a horizon limit
of 25degrees. I am using a THUM sensor.

Here are two test exposures of M5. Each 20min.

This first exposure is with pointing correction and tracking correction
enabled. Correct for refraction is OFF. Not bad, a few pixel trailing.


This second exposure is the same but with correct for refraction ON. As you
can see there is significant trailing.



Dave Goodyear

KB2 Networks Inc.

214 Main St. #318

El Segundo, CA 90245



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