Re: apcc and refraction


Hi Dave,


This is just the sort of issue that is perfect for the support system. Please enter it there. You can upload the files and they will remain attached to the ticket for reference. Many thanks.



Clear Skies,


Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847


From: ap-gto@... [mailto:ap-gto@...]
Sent: Sunday, April 12, 2015 3:58 PM
To: ap-gto@...
Subject: [ap-gto] apcc and refraction



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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