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Eric, I recall our discussion on the CCDWare forum last year, where you didn't believe me that the PEC move distance was different between east and west moves. I am glad to see you now understand. :-)

Sorry to read of your headache getting proper performance. It seems that your G11 has a very light payload, as your lenses seem very light compared to the strength of this G11 mount. So something is

Good morning all, Based on my observations using my G11 with Gemini 2 in the past few years, the guide rate does not affect PEC once a PEC file is loaded. The currPEC.pec file contains all the

Ray is exactly right. This is what I was trying to say, albeit a little less clearly :) Periodic error correction pulses are recorded and stored *at the current guide speed* by Gemini, regardless of

Hi Doug(?) It sounds like your polar alignment was too far off if tracking is trailing at short focal length in a matter of minutes. The other possible reasons for this: wrong tracking rate selected

I had a similar problem with my G811g earlier this summer. I had input the longitude and latitude in decimal form rather than degrees. When I switched to degrees it has worked fine since. I'd try

Hey everyone, first post here. I have used the G11 mount before and had success with it, but this past weekend, it seems like no matter what I tried, I could not get the alignment correct. ?I

Thanks Brian. I will check to see if I saved my PHD logs in a usable fashion. Please note the guiding is better with the heavier payload, which is the reverse of the that rule of thumb thing. I always

As an added thought, balance will affect overall performance. so of course you want to make sure whatever you are using is reasonably balanced Brian [email protected]> wrote:

Hi John I don't think weight has any effect on the periodic error. It would probably help if you uploaded some representative PHD logs to review, who knows why one is better than the other. It's

Hello all: The recent discussions on PEC curves had led me to some thinking. Do I need to redo the PEC curves when I change payloads? During the winter I primarily use my Celestron C925 Edge HD,

That's incorrect if you are using an autoguider to program PEC data. The autoguider keeps the star centered so it MUST send pulse guide commands via the ASCOM interface. The Gemini moves the mount and

Thank you Brian, Sent from my Galaxy Tab A

Thank you for those answers. I think Paul's ideas might be close to the mark. I still don't quite "see" the issue in my mind's eye yet. I think now that the autoguide speed really applies to using PEC

Hi Deric horizontal is totally fine many observatories park it horizontally due to height restrictions wrote: -- Brian Brian Valente portfolio brianvalentephotography.com

Hello everyone, It is my understanding that it is best to keep a SCT stored vertically Collector plate up and secondary mirror set all the way back. If I keep it mounted on the G11. Is it okay to keep

UPDATE: The 0.3x and 0.5x from the documentation are incorrect - those are values from the 492 controller, not the Gemini. Brian

Hi Michael Rene is the best person to answer this, but here are a few tidbits of my understanding When you record PEC using a third party tool like PEMPro, the guide rate affects the speed at which

Hi Michael, Recording PE data doesn't require knowing the guide rate. Programming PEC data into Gemini - does. If you are programming PEC manually (using HC or autoguider corrections) then the

I always learn something new on this forum. I presently avoid needing PEC by the few improvements I made to the RA drive. That hot PE down to the 1 arcsec RMS (~2.4 arcsec Peak to Peak) range, typical