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Steve at ExtraVision e-mailed today and reckons he can fully fix it and quickly - great news. For anyone wondering what went wrong, read on...
The scope is a C9.25 XLT CF on a custom large permanent pier in an Astro lab.
1. Massive gotos errors and occassional motor housing collisions. I switched location from Australia -> Sydney (South 33 Degree 55 Minutes 00 Seconds, East 151 degrees 10 Minutes 0 Seconds) to my actual GPS co-ords and (South 33 Minutes 47 Seconds 56 East 151 degrees 07 Minutes 07 Seconds) and all gotos are widely wrong - by up to 60 degrees and once again the motor collide on about 1 in 3 gotos as it did when I first set-up the scope (and if you remember back to July 2006 Lance in Celestron technical support USA wouldn't believe me)!
I check the tracking was South Eq and Rate was sidereal but wierd behaviour persists. If you set the location back to International Locations -> Australia -> Sydney I suppose all willl work - did last time. Maybe they have a bug in custom sites where they expect them to be all in the Northern Hemisphere and didn't set a variable correctly for custom locations in the Southern hemisphere. Re-setting back to Sydney from international cities normally fixes this bug.
2. Slow slews and delayed stops. This only started two days ago - rate 9 slews are moving like rate 6 slews. Once you release any axis movement button on the hand controller the scope continues to move for about another second whereas before it would instantly stop. Backlash is still set to 09 on all axes so no idea what's going on here. Scope is perfectly balanced and powersupply - Celestron 17 Amp powertank was fully charged - wierd behaviour started immediately it was turned on. I tried doing a factory reset but wierd behaviour persists.
3. No +ve RA
When you push +ve RA all you get is a click in the mount and no motor noise or movement, and a display readout saying
No Response
16
Until you press the undo button.
Scope was working brilliantly till I came back from holidays, got a firend to give me GPS co-ordinates of my astrolab, keyed these in and tried to do an alignment - then everything went totally wierd and even the factory re-set didn't help!
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