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Old 17-11-2014, 02:24 PM
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DavidTrap (David)
Really just a beginner

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Join Date: Jun 2009
Location: Brisbane
Posts: 3,045
Terry,

What you have is a "park" position - provided you park the mount each time, you can unpark it, the controller will still know where it is pointing. If you release a clutch and move the mount, the controller doesn't know where it is pointing. If you were to have a power failure before parking the mount, it may well get "lost", so would need to be resynced to the sky before you can goto again.

Paramounts (and others) have a "home" position that the mount can find all by itself. It then knows where it's pointing and can navigate across the sky. I'm still learning about this, but I believe you have to do some sort of sync after homing the mount. As I understand it, the biggest benefit of this in a remote observatory situation is recovering from a power/computer failure, but I guess that is less of an issue now days with all-sky plate solves being possible.

I'm sure others will correct my inaccuracies.

DT
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