I do wonder if the simple sine oscillation is a tumbling satellite. If so, it being non-uniform in shape would catch sunlight in a repeating pattern. An example, consider a satellite with solar panels off each side. If it is spinning as it travels, then one side solar panel will catch the light and then the other.

The other thing I thought about is it could still be a mount issue. The stars in the attached image seem to be oblong in the same direction as the peaks of the sine wave. If the satellite travel was perpendicular to the error in the mount, it would show up the most vs the lower, fainter trail in the right corner, the fainter trail runs more parallel to the potential mount error. Parallel to the error would greatly reduce the magnitude of the error appearing in the trail as a much larger component of the oscillation is along the trail instead of perpendicular to it.

It seems too linear and uniform in pattern to be a firework I think.

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Jim replied to the topic 'New Targets tool?' in the forum. 3 weeks ago

There is a website that I use for this, telescopius.com/. Having this function in one place would be quite nice. Telescopius does have some other features that are neat such as uploading your own images that would not make sense, so it still has its place too.

Jim

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This has been brought up before (maybe even by me? ;) ). It turns out it would be quite a bit of effort to extract it into a stand-alone application, or that is what I recall hearing. I do agree though, it is a good one now, and quite snappy, too.

Jim

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Jim replied to the topic 'inappropriate use of captcha' in the forum. 1 month ago

Hello, and welcome to the forum. If you are allowing cookies, you should not get the captcha at all after logging in. Note that new users are in a probationary period as well, to prevent spam bots. This could also affect your experience. Your post has been approved, so please report back.

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Jim replied to the topic 'last KStars beta - catalogs are broken' in the forum. 1 month ago

Just a quick question. When you say the "Messier objects are now NGC objects", do you mean that you will only be able to find the Messier objects by searching their NGC designation? If so, I think we need to do what we can to also be able to search by the Messier name. Charles documented objects that are large and bright and easy to find. It is a great catalog to get started in astronomy. No worries if I am not understanding your statement.

Jim

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Thanks for the update. It sounds like you have a different problem then, Paul.

If you would like, here is how you can update your signature to put equipment in to help with debugging: indilib.org/forum/new-forum-users/8195-w...ndi-forum.html#63061

Jim

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While those were pretty much the steps that I took last night, this was the first time I have ever had this problem. I really don't want those settings to be disabled all the time, as it is valuable to have limits. I would call disabling those a temporary work-around to not lose a night.

Jim

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I had a similar problem last night. Mine occurred nearly every time I wanted to slew somewhere, including the initial star alignment at the start of my session. I looked at the logs for eqmod and found that I was continually hitting horizon limits and the slews were stopped before they started. To go along with this, if I clicked the button in kstars that locked where the scope is pointing to the screen, the location of my scope as kstars sees it would jump to below the horizon and back again. I was able to do some capturing after disabling horizon limits, but this was a work-around. There appears to be a bug introduced in eqmod/indi somewhere. The physical mount was never anywhere near negative ALT. kstars jumped to this location on-screen though.

Jasem, thoughts?

[2021-06-02T22:18:18.833 CDT INFO ][     org.kde.kstars.ekos.align] - "The Mount Model Tool is Starting."
[2021-06-02T22:18:18.835 CDT DEBG ][   org.kde.kstars.ekos.capture] - Align State changed from "Complete" to "Slewing"
[2021-06-02T22:18:18.842 CDT DEBG ][           org.kde.kstars.indi] - ISD:Telescope sending coords RA: "09h 25m 56s" ( 9.43214 ) DE: " 19° 41' 47\"" ( 19.6963 )
[2021-06-02T22:18:18.842 CDT INFO ][     org.kde.kstars.ekos.align] - "Slewing to target coordinates: RA (09h 25m 56s) DEC ( 19° 41' 47\")."
[2021-06-02T22:18:18.886 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[INFO] Starting Goto RA=9.43214 DE=19.6963 (current RA=7.94942 DE=25.2139) "
[2021-06-02T22:18:18.888 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[INFO] GOTO ALign Nearest: delta RA = -0.044212, delta DEC  = 0.121204 "
[2021-06-02T22:18:18.889 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[INFO] Aligned Eqmod Goto RA=9.38793 DE=19.8175 (target RA=9.43214 DE=19.6963) "
[2021-06-02T22:18:18.889 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[INFO] Setting Eqmod Goto RA=9.38793 DE=19.8175 (target RA=9.43214 DE=19.6963) "
[2021-06-02T22:18:18.990 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[INFO] Slewing mount: RA increment = -667433, DE increment = 166929 "
[2021-06-02T22:18:19.277 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[INFO] Slewing to RA:  9:25:56 - DEC: 19:41:47 "
[2021-06-02T22:18:19.316 CDT INFO ][     org.kde.kstars.ekos.guide] - "Mount is moving. Resetting calibration..."
[2021-06-02T22:18:19.316 CDT INFO ][     org.kde.kstars.ekos.guide] - "Calibration is cleared."
[2021-06-02T22:18:25.350 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[WARNING] Horizon Limits: Scope at AZ=62.209 ALT=-0.936 is outside limits. Nothing to abort. "
[2021-06-02T22:18:28.658 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[INFO] Iterative Goto (1): RA diff = 9.41 arcsecs DE diff = 0.06 arcsecs "
[2021-06-02T22:18:28.658 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[INFO] Iterative goto (1): slew mount to RA increment = 1226, DE increment = 0 "
[2021-06-02T22:18:29.904 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[INFO] Iterative Goto (2): RA diff = 1.15 arcsecs DE diff = 0.06 arcsecs "
[2021-06-02T22:18:30.030 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[INFO] Telescope slew is complete. Tracking TRACK_SIDEREAL... "
[2021-06-02T22:18:30.033 CDT INFO ][           org.kde.kstars.indi] - EQMod Mount :  "[WARNING] Horizon Limits: Scope at AZ=59.693 ALT=-3.352 is outside limits. Abort Tracking. "
[2021-06-02T22:19:02.868 CDT INFO ][     org.kde.kstars.ekos.align] - "The Mount Model Tool is Reset."
[2021-06-02T22:19:02.869 CDT INFO ][     org.kde.kstars.ekos.align] - "Solver aborted after 217.45 seconds."
[2021-06-02T22:19:02.869 CDT DEBG ][   org.kde.kstars.ekos.capture] - Align State changed from "Slewing" to "Aborted"


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