I did image stacking with OSC preprocessing and it gives the following error:
We have 96 parallel blocks of size 102 (+20) for stacking.
11:45:14: Starting stacking…
11:50:30: Pixel rejection in channel #0: 0.195% - 1.532%
11:50:30: Pixel rejection in channel #1: 0.240% - 2.060%
11:50:30: Pixel rejection in channel #2: 0.217% - 0.848%
11:50:31: Rejection stacking complete. 267 images have been stacked.
11:50:31: Integration of 267 images:
11:50:31: Pixel combination … average
11:50:31: Normalization … additive + scaling
11:50:31: Pixel rejection … Winsorized Sigma Clipping
11:50:31: Rejection parameters … low=3.000 high=3.000
11:50:31: Background noise value (channel: #0): 25.713 (3.924e-04)
11:50:31: Background noise value (channel: #1): 33.710 (5.144e-04)
11:50:31: Background noise value (channel: #2): 25.011 (3.816e-04)
11:50:32: FITS error: failed to find or open the following file: (ffopen)
11:50:32: FITS error: C:\Users\ziywa\Desktop\ucsb photos\MW
11:50:32: FITS error: failed to find or open the following file: (ffopen)
11:50:32: FITS error: C:\Users\ziywa\Desktop\ucsb photos\MW\with foreground\image source
11:50:32: FITS error: Error writing data buffer to file:
11:50:32: FITS error: …/result.fit
11:50:32: FITS error: Error writing elements 45684001 thru 45691200 of input data array (ffpcle).
11:50:32: Stacked sequence successfully.
11:50:32: Execution time: 7 min 21 s.
11:50:32: Running command: cd
11:50:32: Setting CWD (Current Working Directory) to ‘C:\Users\ziywa\Desktop\ucsb photos\MW\with foreground\image source’
11:50:32: Running command: close
11:50:32: Setting CWD (Current Working Directory) to ‘C:\Users\ziywa\Desktop\ucsb photos\MW\with foreground\image source’
11:50:32: Script execution finished successfully.
11:50:32: Total execution time: 14 min 43 s.
11:52:39: Fitsio error reading data, file: C:\Users\ziywa\Desktop\ucsb photos\MW\with foreground\image source\result.fit.
11:52:39: FITS error: Error writing data buffer to file:
11:52:39: FITS error: …/result.fit
11:52:39: FITS error: Error reading data buffer from file:
11:52:39: FITS error: C:\Users\ziywa\Desktop\ucsb photos\MW\with foreground\image source\result.fit
Its true that after processing my disk only has 1gb available but I do not think that’s the error
I am new to this software. Can anybody give some help? Thanks
Yes but it might take a day or so, the devs are mostly in Europe and likely sleeping at this exact moment.
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Looks like you have write access error.
First you should not work directly on your Desktop, not sure it’s a good idea with Windows.
Au contraire, if you don’t have enough free space it won’t work.
Astronomers never sleep 
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Constant naps sound good.