Hi Rob,

I've tried again the focalmm scale mode with the stacked image I've sent some days ago. It doesn't crash now, but it can't solve yet the image

Only 8 and 16 bits bayered images supported.
FITS header: cannot find OBJCTRA (keyword not found in header).
FITS header: cannot find FOCALLEN: (keyword not found in header).
Automatically downsampling the image by 4
Evaluating Installed RAM for inParallel Option. Total Size of Index files: 0.609186 GB, Installed RAM: 3.6884 GB, Free RAM: 2.79109 GB
There should be enough RAM to load the indexes in parallel.
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Starting Internal StellarSolver Sextractor. . .
Stars Found before Filtering: 2913
Removing the stars with a/b ratios greater than 1.5
Keeping just the 50 brightest stars
Stars Found after Filtering: 50
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Configuring StellarSolver
Scale range: 580 to 620 mm focal length
Image width: 3888 pixels, Downsampled Image width: 972 pixels; arcsec per pixel range: 6.15911 to 6.58361
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Starting Internal StellarSolver Astrometry.net based Engine. . .
Solver was aborted, timed out, or failed, so no solution was found
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Internal Sextractor w/ StellarSolver failed after 24.222 second(s).
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The value for the arcsec/pixel seems wrong to me. For the 600mm focal length on my telescope and 5.70 microns per pixel, the image scale is 1.975 arcsec/pixel well outside the searched range

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