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INDI Library v1.8.6 Released (21 Aug 2020)

August 2020 release of INDI Library v1.8.6 introduces new drivers while providing fixes and improvements to existing devices and core framework.

PHD2 can't be used as guider in KStars 3.4.3

1 month 3 weeks ago
JCJ
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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.

My mount is a Celestron CGE Pro
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1 month 3 weeks ago
dmsummers
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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


RASA11, Celestron CGX-L, ASI183mc Pro, 60mm guider + ASI290mm mini, ASI EAF focuser, PPB, Rpi4-4Gb+SSD, Powered USB3 hub, hardwire Ethernet.
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1 month 3 weeks ago
hy
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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 www.firstlightoptics.com/celestron-mount...lestron-cge-pro.html
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? ...

Hy
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1 month 3 weeks ago
JCJ
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PHD2 can't be used as guider in KStars 3.4.3 #58003
Doug, I'm afraid I messed the mount mechanically.

Last night I did again a PEC recording and got also fancy curves and period.

I'll get in touch with the repair people.

Thanks,

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1 month 3 weeks ago
dmsummers
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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....

RASA11, Celestron CGX-L, ASI183mc Pro, 60mm guider + ASI290mm mini, ASI EAF focuser, PPB, Rpi4-4Gb+SSD, Powered USB3 hub, hardwire Ethernet.

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1 month 3 weeks ago
JCJ
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PHD2 can't be used as guider in KStars 3.4.3 #58006
Hy, I just saw I sent the msg on the wrong thread but my reply is the same to you as to Doug ( www.indilib.org/forum/mounts/7474-averag...rol-files.html#57938 ).

I think I damaged the RA-gears of the mount (too long to explain the circumstances ). I'll contact the repair people to-morrow.

Thanks for the help and -again- thanks for the beautiful work you've done on the Internal Guider.

Have a nice day.

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