On Sun, 20 Mar 2016 06:12:38 -0700 (PDT), wrote:

On Sunday, March 20, 2016 at 8:34:51 AM UTC-4, Davoud wrote:
If so, you may be able to tell me why TheSkyX Pro (latest daily build
running on the latest El Capitan) reports that the OTA is on the east
side of the mount immediately after resuming from Park 1, when the OTA
is most definitely on the west side of the mount. I don't know if it's
the mount reporting its position improperly or the TheSkyX being
confused. I suspect the latter, as GOTO works from the A-P
keypad--indicating that the A-P knows where it is. But that doesn't
necessarily mean that it is properly reporting what it knows to
TheSkyX.

Thanks!


Your mount is a german equatorial. There are two ways to orient the mount to make the scope point at a given location in the sky.

I'm sure he knows that. It's a regular problem with GEMs that the
mount and the control software disagree about whether the scope is on
the east or west side of the pier. It turns out to be a bit tricky in
many cases to figure that out from the information that the mount
provides. This generates quite a few discussions on software
development sites, with various mounts as well as various software.

It can be important in order to determine camera rotation, find guide
stars, detect automatic pier flips, position the dome slot, and other
reasons as well.