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Old 16-07-2022, 02:25 PM
Dennis
Dazzled by the Cosmos.

Dennis is offline
 
Join Date: May 2005
Location: Brisbane
Posts: 11,709
Thanks Peter, given that SB could not provide me with a fix by date for the Southern Hemisphere PE “doubling up” issue, I used PEMPro last night and had excellent results.

It only seems to work with the 32 Bit version of The Sky X, so I had to configure that to get the ball rolling. I also got an ASCOM error for my camera (QHY268M Bin 1x1) but when I changed the Binning to 2x2 it seemed okay.

For the pre-PEC run, PEMPro reported the following for my MX+ Mount:
RMS Error = 0.834
Periodic Error = +2.1 / -2.1

For the PE Enabled validation run, PEMPro reported as follows:
RMS Error = 0.752
Periodic Error = +0.0 / -0.0

I was a little puzzled by the 0 value for PE so I slewed to M8 and then M16 and grabbed 120 second test shots (at a FL of 2250 mm) and the stars were nice and round, no sign of any egg shaped trailing, etc.

Previously, in a batch of 30 sec exposures I would have some 10-20% showing evidence of slight trailing, so a good result.

Thanks again for commenting in my problem report post on the SB Forums, it steered me in the right direction.

Ypipee - no more autoguiding....

Cheers

Dennis

EDIT:
1. Just added a 60 sec x 20 frames Unguided Raw shot of M16. No calibration, just Align and Stack in PI so it looks a little rough.

2. SB just advised that PEMPro can be used with The Sky X Pro 64 Bit and their ASCOM2X Mount Adapter, so I will give that a try next time.
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Last edited by Dennis; 17-07-2022 at 10:57 AM. Reason: EDIT Note 2 added.
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