Jim replied to the topic 'New Focus Algorithm in Ekos' in the forum. 3 weeks ago

Would it be possible to have the system determine what the step size should be in some way each session? The starting step for determining the final step size could even be calculated from the user's equipment configuration. Store this value and use it as the seed for the next time an auto-configure of step size is run.

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eqmod guiding is direct control of the mount, where ST4 is older and slower, and designed to communicate directly from a camera

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I wonder if the eqmod driver should reject large deltas that are reported from the mount. With the tracking or slew rate being known, a factor could be applied to ignore values outside of a possible range. I have seen jumping too, and went through a period of cable replacement, power supply replacement, etc. Mine doesn't do it often now, but it is very annoying when it does, and can even be dangerous to the mount and equipment when its actual location is different than what kstars shows.

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Looking at the AC side may show you noise. If there is an AC signal of any strength, or even worse, fluctuation, it could be a power supply issue. Since your DC voltages are fairly stable though, it is likely a well-regulated power supply, and AC should be minimal if it is working correctly.

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Jim replied to the topic 'For those with focus issues' in the forum. 4 months ago

It was mentioned a few times about having a nebula in the frame possibly throwing things off a bit. Between that and edge of field optical distortions, I settled on an annulus configuration of 15% / 55%. This gives me a nice donut that avoids the center of the field where a nebula might be, and the corners of the field, but still has plenty of star quantity inside the large donut. I have full field checked with this configuration, and it seems to work quite well for my needs with the linear algorithm.

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Jim replied to the topic 'EQMOD sync and align settings' in the forum. 4 months ago

1. I have seen this before too, but have not been able to track anything down. When it gets in this way, kstars is out of sync with where the scope is pointing and I end up having to park, clear alignment, and start over. Thankfully it does not happen a lot.
2. I find there is a limit to the number of alignment points that are healthy, and things start to degrade after about 4 to 5 points on each side of the meridian. I sync a few extra points at start, but then switch to solver action "Nothing" which seems to stop the sync points from getting added. It might be a nice setting to not sync after a certain number of points are achieved successfully, then I could leave it set to either "Sync" or "Slew to Target". "Slew to target" would be ideal because the solve could still center the target. There may be some limitations on knowing the starting point for the next slew.
3. not sure on this one

EQ8 on a permanent pier here, by the way.

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