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Eastern position: 100 Western position:112 Western Goto Limit 2:18

Alan, This really sounds like the issue I has 3 years ago when the Beta ware was created. I had runaway slews when GoTo commands were sent from SGPro. At that time I recall sending my Gemini logs to

I think I may have discovered something interesting regarding why it is so difficult to both reduce and get a consistent backlash value for Dec. First, while out in the field disassembling my mount

I used one of those cheap $3 mini laser pointers at the hardware store, designed to make a spot for harassing / entertaining your pets.? It's about 3/8" diameter and 2 inches long. I used a binder

I doubt there is a hardware problem Both motors slew when this happens Stellarium keeps reporting the crosshair position as it goes flying off, so the mount is clearly "telling" it that it's doing so

Show a screen shot of PHD with these oscillations, and I can tell you. It could be "forwards-lash" from a too tight worm mesh. Or axis stiction.

The way to tell if you are getting good guiding or not is to see if the mount responds to corrections. Since you still left the corrections checkbox turned off, I don't know.

Change the y axis to +/-4” and it will look much smoother! Seriously though the RMS pixel values are only 1/3 or 1/5 of a pixel, so even if there are some variations in RA I don’t think it will

From the picture it appears that you're getting 0.28 rms. Is that right? The best I've seen is 0.38 and I have a gm811g with the lightweight tripod. I usually check my focal length setting when I see

The onstep sounds like a great and satisfying project!

I don't know what to tell you, but I had some spikes in Dec, and I tightened it up and they disappeared. I think that the clutches should be cleaned when they start slipping like this, or you can get

Sorry I'm struggling to download, upload and get a proper resolution.? Here's a link to a better version in an album, I hope this works.

BTW here's an image of M39 from 20 subs that I took while observing these oscillations, letting DSS select the best 50%.? I think this is a turning point for me.? It proves that Ekos on a Pi with a

No Stop Button? Haven't heard that one before. Perhaps a power issue. Is the supply yielding 15V and enough amps? Then you might be talking cables or electronics, as Paul mentioned. This might be a

Last night I was autoguiding and DEC started periodic oscillations every 100 seconds or so while RA was fine at 0.5" RMS.? After I loosened the RA and DEC clutches a bit (I like to have them real

This sounds more like an issue with cables or motors/encoders — when Gemini slews to a destination (even if it’s the wrong destination) a stop button becomes visible on HC and in ASCOM driver

Hi Tim Short answer is there's no way to really judge this without seeing the guide and debug logs

Last night I didn't get as good of PA. I'll add some guide logs... Q1: Is this common guiding performance at 0.8"/pixel @ 980mm F7? (SCOPS OAG, ASI224 guide cam, on a recent SLW G11G with a 33#

Anything that eliminates dropped tools is a plus.

I had a 1992 G11 with knurled (as opposed to fluted ) clutch knobs. threading was different. That is the fluted knobs would not fit.