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kingjamez
scholastic sledgehammer
Reged: 10/03/06
Posts: 937
Loc: Washington D.C.
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Arc seconds per step for high end mounts.
07/10/08 01:33 PM
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Any idea on what size step most high end mounts use? I'm designing an equatorial mount and have run into a wall in balancing the dynamic range of my (servo) drive system. It seems I can either have a low arc seconds per step ratio, or fast slews but not both. So my goal is to find the maximum acceptable number for arc seconds per step that will give the appearance of 100% smooth motion.
Related question: If I have a camera that has 0.5 arc seconds per pixel resolution in my optical system (assume I'm on a mountain in Hawaii), will 0.4 arc seconds per step appear smooth or do I need at least 0.25 arc seconds per step?
How on earth does the AP1200 hit 1200x sidereal while still maintaining smooth motion at/below sidereal?
Thanks for any suggestions (hint hint:CCS_HELLO).
-Jim
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