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So I have a better understanding of the limits setting in Gemini. It seems that I need to take the western limit, say 100 degrees and whatever the western goto limit is set to is subtracted from that

First things first, if you are getting 9 out of 10 good subexposures at 2350mm, then you are good. Guiding and imaging over 2 meters focal length is always a challenge. Second, in the calibration plot

Hi Paul, my first suggestion would be to use the frequency analysis on that session to see if there’s any give away. Other than that I’m not of much help, I can only think of some dirt in some

I've had a heck of a time understanding where I might be getting RA - and only RA - spikes from.? My setup is a Celestron 9.25"Edge HD with an OAG, sitting on a Losmandy GM811 mount, using Gemini II,

So, you ended by adjusting the back-off screw, and in this case you adjusted it a little more tight than before, am I wrong?? If that was the case you have proved that turning CCW a little that screw

Just followed the videos from Scott - https://www.youtube.com/watch?v=LGmj3bEDVNM and - https://www.youtube.com/watch?v=LmcEYhat7jE.

That's right. And you don't need to recapture the data to do this, just re-program the mount inverting the curve you used last time.

In this case PEC is not correcting the primary error (240 seconds) which is in fact doubled. I suggest to try to reprogram the mount with the PEC curve inverted. Before the PEC, as you say there is a

Here are the two logs after RA worm block tweaking - slight improvement. Thoughts on the data? Thanks, Ken

Thanks for the feedback. I appreciate it. Just watched the Losmandy video on meridian flips. I will take a good look at the related limit settings. I will also target something crossing the meridian

The ASIAIR issues commands, such as the Go-To X sequence, to which the mount responds according to the user-defined Limits. Objects only reachable on the East and West necessitate a Meridian Flip

With my air, usually start the mount, do a Cold Start, and then start the air and connect.? I use USB, by the way. As far as guiding. I have never got numbers that low so can't give you much

One other issue I forgot to mention. Very early this morning a run of four hours was over and I had set up "autorun" to move the mount to home after. It did not move at all. Then I slew to another

I have been mostly using my month old G11G with NINA, but started trying the ASIAIR this week. Overall, going well and getting good subs. But there are quirks that I would fix if there is a way. 1.

Thanks Paul - will have another look at the RA worm block again. Maybe things changed from the first L6 PEC work. The skies were clear here too so I may just check that again - purposely put the

I'm curious if there has been any further progress here?? It does looknlikenits way obershooting Dec, possibly due to backlash over compensation. Brian

Hi Ken, As Daniel said, the 76 sec error is large before PEC and it's not something that can be corrected by PEC. You may need to adjust the RA worm block better to reduce this error. If you can't

Backlash in RA is not a problem, the RA motor does not need to reverse directions, so you don't need to tune the mount to lower backlash in RA.? Again, I'm no expert, but if your current guiding

My guiding has been very good but I did notice a bit of backlash so I will adjust the SLW and redo the PEC . Thanks for the suggestion. Ken

Hi, you have a very high 76 second error that cannot be corrected by PEC.? Your primary 240 second error is quite low. How is guiding ?? Take the following with a grain of salt as I'm no expert,?