Plate solve fails on ASI2600MC SharpCap 4

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Menno555
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Re: Plate solve fails on ASI2600MC SharpCap 4

#11

Post by Menno555 »

Okay, some clear skies and did check. See screenshots below.
Settings for platesolve captures: exposure 4 sec, Gain 600 (max).

Image 1: 8 bit Off and Noise Detection Threshold at the default 50. Exposure of 4 seconds gave 667 sources and platesolve after 2 seconds.
Image 2: 8 bit On and Noise Detection Threshold at the default 50. Exposure of 4 seconds gave an error (no mention about sources) and failed platesolve.
Image 3: this worked. 8 bit On and Noise Detection Threshold at 5. Exposure of 4 seconds gave only 31 sources and plate solve took a lot longer than normal. Exposure of 16 seconds gave 210 sources and platesolve after 4 seconds.

Hope this is enough info.
Menno

Image 1: 8 bit Off
Image 1: 8 bit Off
8-off.jpg (198 KiB) Viewed 526 times
Image 2: 8 bit On
Image 2: 8 bit On
8-On.jpg (193.6 KiB) Viewed 526 times
Image 3: 8 bit On - 5 - 16
Image 3: 8 bit On - 5 - 16
8-On-5.jpg (150.39 KiB) Viewed 513 times
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Menno555
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Re: Plate solve fails on ASI2600MC SharpCap 4

#12

Post by Menno555 »

And to make it complete:
Image 1: 8 bit Off, 4 second exposure, platesolve successful. With 8 bit On, no platesolve
Image 2: 8 bit On, 16 second exposure platesolve successful

8 bit Off, 4 second exposure, platesolve successful
8 bit Off, 4 second exposure, platesolve successful
8bit-Off-4seconds.jpg (480.07 KiB) Viewed 524 times

8 bit On, 16 second exposure platesolve successful
8 bit On, 16 second exposure platesolve successful
8bit-On-16seconds.jpg (476.49 KiB) Viewed 524 times
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admin
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Re: Plate solve fails on ASI2600MC SharpCap 4

#13

Post by admin »

Hi,

unfortunately the JPG file format automatically reduces the image to 8 bit, so I don't think I'm going to find anything useful out from those image files :(

For me, both of those find ~700 sources (sigma=50) and succeed (but not very fast).

cheers,

Robin
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Menno555
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Re: Plate solve fails on ASI2600MC SharpCap 4

#14

Post by Menno555 »

Hi Robin

Prediction is good for here coming evening, so will capture some FITS and share them through WeTransfer.
Any preference in settings or just the same scenario with 8 bit On and Off with sigma=50?

Menno
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Re: Plate solve fails on ASI2600MC SharpCap 4

#15

Post by admin »

Hi,

just use your standard settings for deep sky (presumaby RAW16 or MONO16, and whatever gain/exposure/output format you prefer).

I've spotted another thread which I think is the same problem, so I am going to reset the option to 'Off by default' - this will switch it off for everyone when they next update to a new version and then those who really want it can switch it back on.

cheers,

Robin
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Menno555
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Re: Plate solve fails on ASI2600MC SharpCap 4

#16

Post by Menno555 »

Hi Robin

I made test again. Same scenario.
1) 8 bit Off with default sigma = 50: successful and fast plate solve with 4 seconds exposure.
2) 8 bit On with default sigma = 50: fail. Message: Failed to read xylist and fail plate solve: No solution within 15 degrees
3) 8 bit On with sigma = 5: successful and plate solve with 4 seconds
4) 8 bit on with default sigma = 50: only with 32 seconds a successful plate solve.

In the RAR file both the 4 sec and 32 sec exposure. Ignore the names of the FITS, those are not correct I see now :)
Link to testfiles with FITS and camera settings: https://we.tl/t-Zd2Ab3D2sh (you have to agree before the download can begin)
Note: a dual narrowband filter is used. Normally my plate solve times are around 2 seconds.

Menno
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Re: Plate solve fails on ASI2600MC SharpCap 4

#17

Post by admin »

Hi Menno,

yep, I see pretty much the same testing here with those files - thanks for sharing. The latest update turning off 8-bit by default is now out and should resolve most of the issues.

cheers,

Robin
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