Thread: Drift alignment
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Old 11-12-2005, 07:07 PM
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Striker (Tony)
Whats visual Astronomy

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Join Date: Dec 2004
Location: Brisbane
Posts: 5,062
No Andrew to the mod toucam, all you need is any cam that you can see and focus on....any webcam will pick up bright stars.

All I do is single out a star fairly close to the meridian...does not have to be that close.

1)focus on the star with standard toucam...the higher the magnification the better...I use this on my C11 with a focal length of 2800...I think the toucam is approx equilivent to a 6mm eyepiece giving me about 460x magnification.

2)woops I made a mistake...the last few times I have used Guidedog for drift alignment not K3CCD....anyway....in guidedog you can put a cross hair on the star..I do this but then I also turn the toucam so that I get an approx tracking line on the chross hair buy simply driving the RA axis back and forth...meaning when I drive the RA axis this will follow one of the lines of the chrosshairs.

3) center target and allow to sit for atleast a few minutes...the higher the mag the less time you need to wait...once the star has drifted of it's axis then I just adjust the RA or Dec axis back to the cross hair.

4) I only do 1 axis at a time..dont try doing both at the same time or you will get confused.
Once you see someone do this once you will Know exactly what to do.
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