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Rayh
super member
Reged: 08/22/05
Posts: 168
Loc: Gilbert, AZ, USA
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I did a periodic error correction on my 12" LX200 GPS using PhD guiding to supply the training commands. The training sessions were stable in both DEC and RA. However, when I turn on PEC for RA afterwards the scope drifts in RA several arc-minutes per minute. If I turn off PEC or use the factory installed PEC, the scope tracks fine. The DEC works fine.
I have repeated the process several times with no luck.
Your help would be much appreciated.
Ray
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Ray Heinle
Gilbert, Arizona, USA
7" LX 200GPS MAK, 12" LX200 GPS, Celestron 80ED
QHY8
Orion SSDSI, Meade LPI
Nikon D40x, SBIG ST-6
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chicot
super member
Reged: 09/30/08
Posts: 189
Loc: Liverpool, UK
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Download the free trial version (30 day) of Pempro and use that instead. I think that should be more effective than using PHD guiding. At a guess, I would expect that to get rid of the RA drift problem.
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Meade 10-inch LX200 classic
Williams Optics ZII80
Starlight Xpress SXV-H9
Starlight Xpress Lodestar autoguider
Meade DSI III
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Rayh
super member
Reged: 08/22/05
Posts: 168
Loc: Gilbert, AZ, USA
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I will give Pempro a try when I return home in a couple of weeks. The description looks good but $150 is more than I would normally spend for any software product. I might be able to fix my problem in 30 days.
Thanks for the advice.
Ray
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Ray Heinle
Gilbert, Arizona, USA
7" LX 200GPS MAK, 12" LX200 GPS, Celestron 80ED
QHY8
Orion SSDSI, Meade LPI
Nikon D40x, SBIG ST-6
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quantumac
sage
Reged: 12/17/07
Posts: 387
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In my permanently mounted 10" LX200R situation, I use PHD. My scope is equatorial mounted, drift-aligned, PEC trained, and dynamically balanced using weights on both sides of the OTA. I also use an OAG instead of a guide-scope, because OAGs are not susceptible to differential flexture. All these things improved my DSO imaging efforts. I rarely perform DEC adjustments, but when I do, they are quite small and I perform them manually.
Astrophotography is not necessarily a game for the wealthy, but it is a game for the patient.
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Scope: Meade 10" LX200R
Guide/Planetary Camera: Imaging Source DBK41AF02.AS
DSO Camera: QHY8
Guide Hardware: Celestron OAG, Shoestring Astronomy GPUSB
Software: Mac OS X, Starry Night Pro, Nebulosity, PHD Guiding, PixInsight, Astro IIDC. No Windows anything.
Edited by quantumac (10/04/09 12:21 AM)
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