PHD2 can't be used as guider in KStars 3.4.3 #57912
dmsummers wrote: @jcj: re: "The reason I wanted still to use PHD2 is because the GPG RA Guider asks for the Major Period . How do I get it ?"
Open the PHD2 Log Viewer, select a guide interval, right click in the graph and select "analyze selected raw RA". In next pop-up window, select frequency analysis button (top left). The period will be obvious. Use the mouse to mouse-over at the exact location of the major period, and see the value in the bottom left of the GUI.
dmsummers, I tried this procedure but I couldn't make it work
I probably made a mistake (see the attached guide log)
However using INDI Server + PHD2 with Predictive PEC / Period Length = 200 + "Auto-adjust Period", the period value settled to 1441,54 sec after a guiding of 2h 30mn.
PHD2 can't be used as guider in KStars 3.4.3 #57936
@JCJ: Venturing an educated guess, but I think there's no way you have a 1441 second PE. That result should be viewed as suspicious (either as a software bug or algorithm problem). When I opened your log in the LogViewer and analyzed the long 2.5 hour guide period, I see a 390 second PE with a magnitude of 1.5 arcsecs. Not sure if you've already run a PPEC run on your mount or not, but if not, I'd suggest it. Beyond the 390 second period, you have some minor increased error (> 0.5 arcsecs) between 100 secs and 390; probably nothing to worry about unless you want peak performance. If this is a raw mount output (no PPEC run done), it's pretty nice! My CGX-L raw values are MUCH higher (order of magnitude)! Cheers, Doug
PHD2 can't be used as guider in KStars 3.4.3 #57953
As Doug points out, your estimate of 1441s is probably 4 periods, or something like that.
See, for instance, graph 1 in
You might want to start out PPEC or GPG-RA guiding at either the ~390s Doug got, or ~350s like those graphs show,
and let it estimate the period, starting there. See if you wind up with something in the 350-400 range, and if so, uncheck the estimate box and keep that.
I'm curious about your guiding, though. You seem to have really good guiding, interrupted by large spikes of error in RA. E.g.
Do you know what might be causing them? Were the conditions bad? Were you focusing very regularly? ...
PHD2 can't be used as guider in KStars 3.4.3 #58005
Unless you worked on the hardware, it's hard to believe that you could have done any lasting damage by running/uploading PEC curves. Did you try afterwards to just turn off PEC in the mount HC (assuming you don't like any uploaded file)? If you want to send me a private message, we might be able to sort out what you did and how it went awry. We probably can get you back again without a repair bill....