Okay, in the simulator images could be solved, but this does not help at all! Using a real sky and real devices I still have problems. Yesterday night it took me 3 hours to test several things. I tried running KStars directly on the RPI4 and I tried KStars connected remotely to the RPI4 and detected a lot of new issues and finally capture & solve did still not work. 

When I'm trying to capture & solve using my Canon EOS 700D it always fails - on the RPI4 and also via remote connection. And as I mentioned earlier, I can not see any star inside the image shown during capture and solve!!!! 

 

When I capture a preview image with the same exposure time I always have stars in the image and the stars are also in my final images when I come so far that I can run capturing session. However, as you can see, there is not any star in the image visible. I retried this with different exposure times up to 60 seconds and never had any star visible!! There is no filter attached to the camera. Taking the same image from the capture module as a preview image contains stars. This is the reason - just no stars, but only here. As if the module is just taking dark frames (and no: I did not forget to remove any lens coverage ). 

However, this is not enough. In the hope, that I can benefit from some fixes I also updated my RPI4 Astroberry to the latest version yesterday. Another big mistake. The update did make it more worse. Now, I also cannot capture and solve anymore using my ASI ZWO 120mm Mini Mono guiding camera. The reason here: I get stars, but the image is only half and the other side repeats the same star pattern again. Sometimes this orientation is horizontal, sometimes its vertical repeating (but this can be just a preview effect, so the image might be rotated sometimes). You can see it here:

 

The same effect occurs also when using KStars on the RPI4. Sometimes it helps to restart the INDI Server, just restarting the ZWO driver did not have the same effect. But if all that does not help it always helped to reboot the RPI4 (its Windows, you need to reboot... oh no, this is not Windows...). After the reboot/restart it works for a while and when I need to do another capture and solve (meanwhile KStars crashed, so I needed to do everything again) the star pattern is repeated again. Unfortunately, the reboot/restart does not help to bring capture and solve working with the Canon. I add some logging to the end, but I think this will not be helpful - the reason is in the images taken with the Canon. I also switched off downsampling (set it to 1 and unchecked auto downsampling), then it takes longer but it does not help and I can also see not any stars myself, just some hot pixels. As capturing images works with the camera I think there is something special done here with the image or its a special capturing which ends up as a dark image for (some) DSLRs. 

It smells like a bug, at least I'm running out of ideas. What can I do to provide more information to fix this?


A short part of the log for the Canon issue: 

021-08-20T22:14:19 Solver Failed.
2021-08-20T22:14:19 Child solver: 1 did not solve or was aborted
2021-08-20T22:14:19 Child solver: 4 did not solve or was aborted
2021-08-20T22:14:19 Child solver: 3 did not solve or was aborted
2021-08-20T22:14:19 Child solver: 2 did not solve or was aborted
2021-08-20T22:14:19 Starting Internal StellarSolver Astrometry.net based Engine with the 1-Default profile. . .
2021-08-20T22:14:19 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:14:19 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 210.056 to 373.272
2021-08-20T22:14:19 Scale range: 101.294 to 180 degrees wide
2021-08-20T22:14:19 Starting Internal StellarSolver Astrometry.net based Engine with the 1-Default profile. . .
2021-08-20T22:14:19 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:14:19 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 93.4735 to 210.056
2021-08-20T22:14:19 Scale range: 45.075 to 101.294 degrees wide
2021-08-20T22:14:19 Starting Internal StellarSolver Astrometry.net based Engine with the 1-Default profile. . .
2021-08-20T22:14:19 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:14:19 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 0.207373 to 23.5239
2021-08-20T22:14:19 Scale range: 0.1 to 11.3438 degrees wide
2021-08-20T22:14:19 Starting Internal StellarSolver Astrometry.net based Engine with the 1-Default profile. . .
2021-08-20T22:14:19 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:14:19 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 23.5239 to 93.4735
2021-08-20T22:14:19 Scale range: 11.3438 to 45.075 degrees wide
2021-08-20T22:14:19 Solver # 4, Low 101.294, High 180 arcminwidth
2021-08-20T22:14:19 Solver # 3, Low 45.075, High 101.294 arcminwidth
2021-08-20T22:14:19 Solver # 2, Low 11.3438, High 45.075 arcminwidth
2021-08-20T22:14:19 Solver # 1, Low 0.1, High 11.3438 arcminwidth
2021-08-20T22:14:19 Starting 4 threads to solve on multiple scales
2021-08-20T22:14:19 Stars Found after Filtering: 6
2021-08-20T22:14:19 Stars Found before Filtering: 6
2021-08-20T22:14:19 Starting Internal StellarSolver Sextractor with the 1-Default profile . . .
2021-08-20T22:14:19 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:14:19 There should be enough RAM to load the indexes in parallel.
2021-08-20T22:14:19 Note: Free RAM for now is reported as Installed RAM on MacOS until I figure out how to get available RAM
2021-08-20T22:14:19 Evaluating Installed RAM for inParallel Option.  Total Size of Index files: 0.13579 GB, Installed RAM: 8 GB, Free RAM: 8 GB
2021-08-20T22:14:19 Automatically downsampling the image by 3
2021-08-20T22:14:19 Bild erhalten.

2021-08-20T22:16:24 Solver Failed.
2021-08-20T22:16:24 Child solver: 3 did not solve or was aborted
2021-08-20T22:16:24 Child solver: 2 did not solve or was aborted
2021-08-20T22:16:24 Child solver: 4 did not solve or was aborted
2021-08-20T22:16:24 Starting Internal StellarSolver Astrometry.net based Engine with the 4-SmallScaleSolving profile. . .
2021-08-20T22:16:24 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:16:24 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 5.33986 to 11.7555
2021-08-20T22:16:24 Scale range: 2.575 to 5.66875 degrees wide
2021-08-20T22:16:24 Child solver: 1 did not solve or was aborted
2021-08-20T22:16:24 Starting Internal StellarSolver Astrometry.net based Engine with the 4-SmallScaleSolving profile. . .
2021-08-20T22:16:24 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:16:24 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 11.7555 to 20.7373
2021-08-20T22:16:24 Scale range: 5.66875 to 10 degrees wide
2021-08-20T22:16:24 Starting Internal StellarSolver Astrometry.net based Engine with the 4-SmallScaleSolving profile. . .
2021-08-20T22:16:24 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:16:24 Starting Internal StellarSolver Astrometry.net based Engine with the 4-SmallScaleSolving profile. . .
2021-08-20T22:16:24 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:16:24 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 0.207373 to 1.4905
2021-08-20T22:16:24 Scale range: 0.1 to 0.71875 degrees wide
2021-08-20T22:16:24 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 1.4905 to 5.33986
2021-08-20T22:16:24 Scale range: 0.71875 to 2.575 degrees wide
2021-08-20T22:16:24 Solver # 4, Low 5.66875, High 10 arcminwidth
2021-08-20T22:16:24 Solver # 3, Low 2.575, High 5.66875 arcminwidth
2021-08-20T22:16:24 Solver # 2, Low 0.71875, High 2.575 arcminwidth
2021-08-20T22:16:24 Solver # 1, Low 0.1, High 0.71875 arcminwidth
2021-08-20T22:16:24 Starting 4 threads to solve on multiple scales
2021-08-20T22:16:24 Stars Found after Filtering: 5
2021-08-20T22:16:24 Keeping just the 50 brightest stars
2021-08-20T22:16:24 Removing the stars with a/b ratios greater than 1.5
2021-08-20T22:16:24 Stars Found before Filtering: 5
2021-08-20T22:16:24 Starting Internal StellarSolver Sextractor with the 4-SmallScaleSolving profile . . .
2021-08-20T22:16:24 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:16:24 There should be enough RAM to load the indexes in parallel.
2021-08-20T22:16:24 Note: Free RAM for now is reported as Installed RAM on MacOS until I figure out how to get available RAM
2021-08-20T22:16:24 Evaluating Installed RAM for inParallel Option.  Total Size of Index files: 0.13579 GB, Installed RAM: 8 GB, Free RAM: 8 GB
2021-08-20T22:16:24 Automatically downsampling the image by 3
2021-08-20T22:16:24 Bild erhalten.
2021-08-20T22:15:51 Bild wird aufgenommen ...

2021-08-20T22:18:19 Solver Failed.
2021-08-20T22:18:19 Child solver: 4 did not solve or was aborted
2021-08-20T22:18:19 Child solver: 2 did not solve or was aborted
2021-08-20T22:18:19 Child solver: 3 did not solve or was aborted
2021-08-20T22:18:19 Starting Internal StellarSolver Astrometry.net based Engine with the 4-SmallScaleSolving profile. . .
2021-08-20T22:18:19 Starting Internal StellarSolver Astrometry.net based Engine with the 4-SmallScaleSolving profile. . .
2021-08-20T22:18:19 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:18:19 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:18:19 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 1.4905 to 5.33986
2021-08-20T22:18:19 Child solver: 1 did not solve or was aborted
2021-08-20T22:18:19 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 11.7555 to 20.7373
2021-08-20T22:18:19 Scale range: 0.71875 to 2.575 degrees wide
2021-08-20T22:18:19 Scale range: 5.66875 to 10 degrees wide
2021-08-20T22:18:19 Starting Internal StellarSolver Astrometry.net based Engine with the 4-SmallScaleSolving profile. . .
2021-08-20T22:18:19 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:18:19 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 5.33986 to 11.7555
2021-08-20T22:18:19 Scale range: 2.575 to 5.66875 degrees wide
2021-08-20T22:18:19 Starting Internal StellarSolver Astrometry.net based Engine with the 4-SmallScaleSolving profile. . .
2021-08-20T22:18:19 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:18:19 Image width: 5208 pixels, Downsampled Image width: 1736 pixels; arcsec per pixel range: 0.207373 to 1.4905
2021-08-20T22:18:19 Scale range: 0.1 to 0.71875 degrees wide
2021-08-20T22:18:19 Solver # 4, Low 5.66875, High 10 arcminwidth
2021-08-20T22:18:19 Solver # 3, Low 2.575, High 5.66875 arcminwidth
2021-08-20T22:18:19 Solver # 2, Low 0.71875, High 2.575 arcminwidth
2021-08-20T22:18:19 Solver # 1, Low 0.1, High 0.71875 arcminwidth
2021-08-20T22:18:19 Starting 4 threads to solve on multiple scales
2021-08-20T22:18:19 Stars Found after Filtering: 3
2021-08-20T22:18:19 Keeping just the 50 brightest stars
2021-08-20T22:18:19 Removing the stars with a/b ratios greater than 1.5
2021-08-20T22:18:19 Stars Found before Filtering: 3
2021-08-20T22:18:19 Starting Internal StellarSolver Sextractor with the 4-SmallScaleSolving profile . . .
2021-08-20T22:18:19 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2021-08-20T22:18:19 There should be enough RAM to load the indexes in parallel.
2021-08-20T22:18:19 Note: Free RAM for now is reported as Installed RAM on MacOS until I figure out how to get available RAM
2021-08-20T22:18:19 Evaluating Installed RAM for inParallel Option.  Total Size of Index files: 0.13579 GB, Installed RAM: 8 GB, Free RAM: 8 GB
2021-08-20T22:18:19 Automatically downsampling the image by 3
2021-08-20T22:18:19 Bild erhalten.
2021-08-20T22:17:34 Bild wird aufgenommen ...

 


 

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