Autocenter after meridian flip failed

maccik

Last night I was shooting Sh2-174 which is located near Polaris. After hour of shooting ASIAir stopped mount tracking and waited for target to cross meridian to do meridian flip. I do this all the time and it was working without any issues. But last night after meridian flip it slewed somewhere near the target (near polaris) and shot that area for the rest of the night. Instead of shooting Sh2-174. I guess it has something to do with my target being near Polaris. But night before I shot same target without any issues.
Any suggestions to prevent this behavior in future? I'm sending my log below, not the full log, only important part.

`Log enabled at 2024/04/27 20:56:46
2024/04/27 20:56:46 Plan lbn598 Start
2024/04/27 20:56:46 [Autorun|Begin] SH2-174 Start
2024/04/27 20:56:46 [Guide] Stop Guiding
2024/04/27 20:56:46 [AutoCenter|Begin] Auto-Center 1#
2024/04/27 20:56:46 Mount slews to target position: RA:23h47m53s DEC:+81°4'27"
2024/04/27 20:57:39 Exposure 10.0s
2024/04/27 20:57:50 Plate Solve
2024/04/27 20:57:52 Solve succeeded: RA:23h42m39s DEC:+81°2'25" Angle = -92.9042, Star number = 81
2024/04/27 20:57:52 [AutoCenter|End] Too far from center, distance = 7%(0.20607°)
2024/04/27 20:57:54 [AutoCenter|Begin] Auto-Center 2#
2024/04/27 20:57:54 Mount slews to target position: RA:23h47m53s DEC:+81°4'27"
2024/04/27 20:58:05 Exposure 10.0s
2024/04/27 20:58:16 Plate Solve
2024/04/27 20:58:17 Solve succeeded: RA:23h47m50s DEC:+81°4'14" Angle = -94.2088, Star number = 79
2024/04/27 20:58:17 [AutoCenter|End] The target is centered
2024/04/27 20:58:17 Start Tracking
2024/04/27 20:58:21 [Guide] ReSelect Guide star
2024/04/27 20:58:22 [Guide] Start Guiding
2024/04/27 20:58:26 [Guide] Guide Settle
2024/04/27 20:58:41 [Guide] Settle Done
2024/04/27 20:58:41 Shooting 90 light frames, exposure 300.0s Bin1
2024/04/27 20:58:41 Start Tracking
...
Shooting as normal
...

2024/04/27 22:06:22 [Guide] Stop Guiding
2024/04/27 22:06:22 Stop Tracking
2024/04/27 22:06:22 [Meridian Flip|Begin] Wait 18min48s to Meridian Flip
2024/04/27 22:25:09 Meridian Flip 1# Start
2024/04/27 22:25:10 [AutoCenter|Begin] Auto-Center 1#
2024/04/27 22:25:10 Mount slews to target position: RA:23h47m53s DEC:+81°4'27"
2024/04/27 22:26:08 Exposure 10.0s
2024/04/27 22:26:19 Plate Solve
2024/04/27 22:26:20 Solve succeeded: RA:0h19m32s DEC:+87°17'31" Angle = 102.727, Star number = 466
2024/04/27 22:26:20 [AutoCenter|End] Close to Celestial Poles, unable to Sync
2024/04/27 22:26:20 [Meridian Flip|End] Meridian Flip succeeded
2024/04/27 22:26:20 Start Tracking
2024/04/27 22:26:20 Wait for Mount Settle
2024/04/27 22:26:29 [Guide] ReSelect Guide star
2024/04/27 22:26:30 [Guide] Start Guiding
2024/04/27 22:26:34 [Guide] Guide Settle
2024/04/27 22:26:49 [Guide] Settle Done
2024/04/27 22:26:50 Start Tracking
...
... Slewed somewhere near polaris and shooted it till morning
...`

Tech@ZWO

maccik Got it, i forwarded to our team, they will look into it.

maccik

Tech@ZWO Thanks, I shot it last two nights too, night before I planned shooting start after object crosses meridian and it worked fine. Last night I did the same and same problem occured. I had plan to shoot one frame near the zenith (to calibrate guiding) and then move to Sh2-174. One night it worked the other night it didn't. I know ASIAir cannot sync mount near celestial pole, but it was synced from previous target... I don't know why it fails 🙁

Tech@ZWO

maccik Thanks for your updates, we will test this as soon as possible, but too much rain or clouds recently, not sure when we can get clear skies.
could you upload a bug report in the ASIAIR app for us to analyze when the problem appears next time? thanks in advance,

maccik

Tech@ZWO okay, thanks didn't know about that feature in app. Will do next time. I discussed it in some facebook groups and other people agreed that asiair has troubles platesolving near polaris during planned session.