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Old 10-02-2008, 05:40 PM
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rogerg (Roger)
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Join Date: Feb 2006
Location: Perth, Western Australia
Posts: 4,563
Question LX200 Startup Position - slight error

G'day all,

As part of my continuing efforts to improve the automation of my equipment:

Whenever I start up my LX200 it's slightly off the position where it thinks it's pointing. It varies how much, but something in the order of a few degrees, mostly in RA.

I follow a fairly strict routine of turning it off as soon as it parks at it's home position and then turning it off ASAP such that it doesn't move in RA, or in the case of automation parking it, setting it to land mode immediately and then turning it off later.

My theory has been that he sooner I turn it off after a park or land-mode action the more accurate it's startup position will be.

Yet I'm still a few degrees off.

The LX200 does a slight move upon startup to test it's RA/DEC motors, but that amount is not significant in the difference seen, and it seems to correctly know it's moved and in what direction during that test anyhow.

Any ideas?

Thanks,
Roger.
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