Hy Murveit replied to the topic 'Ekos plate solving errors' in the forum. 12 months ago

It seems to me that your screenshot shows a "successful" plate solve (that is, it came up with solution coordinates -- which are not shown in the cropped screenshot).

I think (but am not 100% sure) that it shows that your telescope is reporting coordinates of RA=12h DEC= 0 degrees (which is not near the pole),
and that the plate-solve solution was 90 degrees (~300K arcsec) different from that.

I'm not familiar with your mount, but here's what you might consider doing.
- KStars/Ekos/Indi is turned off.
- Reset your mount, e.g. power cycle and mechanically move it so that it's pointing near the north star (assuming you're in the northern hemisphere). Ideally have it forget any alignment it might have stored if that's possible, but maybe you don't need to.
- Start KStars/Ekos. Make sure your mount is connected in the INDI console. Look at the INDI console at the mount's tab and make sure the reported RA/DEC is roughly the pole (e.g. DEC is roughly 90 degrees for northern hemisphere).
- Create a keyboard shortcut (any convenient keystrokes, I use control-l) for "slew telescope to the mouse pointer position". You can find that under Settings --> Configure Keyboard Shortcuts, then type "slew" in the search bar, then click in the shortcut column, then type control-l, and click ok.
- Unpark your mount in the Ekos Mount tab.
- Using the Skymap, move your mouse to some "interesting" sky position far from the pole, click there, then type control-l (but first read below)
- You mount should start slewing "roughly" to that part of the sky. If it's off by 10 degrees or whatever, fine. If it seems like it's going crazy and about to hit the pier/tripod, or pointing into the ground, obviously power off your mount. This applies here and to all further mount movements until you're confident things are working well.
- Look at the INDI mount tab and see the reported RA/DEC. Hopefully the telescope is thinking that it is pointing roughly where you asked it to point on the skymap.
- Go to the align tab, set the radio button at the top-left to slew-to-target. Set the accuracy to about 30'. Set exposure to, e.g. 5 or 10s. Some reasonable gain and filter. Click CaptureAndSolve. It should try to plate solve, and iterate, moving closer to your position. You can see in the log bar if the plate solving is working.
- If the plate solving is failing, try going to Options in the bottom-right of the Align tab, Scale-And-Positiojn on the left side of the menu, and uncheck "use scale" and uncheck "use position" and try again to click Capture AndSolve. Hopefully it will work now.
- Do this for one or two other targets, perhaps with one of them on the other side of the meridian. If all that works, then you're probably plate solving and slewing decently.

All the above doesn't have much to do with guiding (your original topic), however, it may get you going with slewing and plate solving.

Best of luck and please report back,
Hy

PS If all this works, and you want to also try guiding, take a stab at it like this:
- Make sure on the guide tab, the telescope description looks right.
- Make sure you've set up an Optical Train www.youtube.com/watch?v=ltOFxH_fKnQ (note Guider in your optical train usually means your mount, not your guide camera)
- Go to one of those targets you were playing with above (again not close to the pole):
- Go to the guide tab, choose Options, on the options menu choose Guide and set things to e.g. aggressiveness 0.6, Inegral gain 0, min error 0, max 100, (all both RA and DEC), Algorithm SEP MultiStar, Profile: Guide-Default. Then on Calibration tab: Pulse 1000, Max Iterations 10, Max Move 25, 1st and 3rd checkmarks checked (maybe the 4th too, you'll have to experiment with that, but that only applies to guiding on the other side of the meridian after you've calibrated on one side). Then click OK in the options menu.
- Click Guide. It should start calibrating, then it should start guiding.
- Make sure you've been keeping a debug log, then if you have issues, upload the log.

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