Preprocessing failed

Dear all,

I am new to this software, so I tried out the tutorial steps. So I downloaded the example images and saved them into the needed folders.

right at the beginning I got this error message:

9:18:19: Befehlsausführung: stack
19:18:20: FITS Fehler: bias_00004.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00005.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00006.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00007.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00008.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00009.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00010.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00011.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00012.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00013.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00014.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00015.fit
19:18:20: FITS Fehler: ffopen could not interpret primary array header of file:
19:18:20: FITS Fehler: bias_00001.fit
19:18:20: Konnte Bild 0 aus Sequenz bias_ nicht laden
19:18:20: Fehler in Zeile 29: ‘stack’.
19:18:20: Verlasse Batch-Prozess.
19:18:20: Legen Sie das aktuelle Arbeitsverzeichnis fest ‘/Volumes/Test ext/Astrofoto/Erster Versuch’
19:18:20: Script-Ausführung fehlgeschlagen.

could someone help me to handle this problem? any suggestions for a solution? thank in advance :slight_smile:

best!

that’s new :slight_smile:
Can you confirm this is version 0.99.8.1 or newer?

yes i am using 0.99.8.1 with mac OS Big Sur.

That would be better to output logs in english. You can change the language in preferences.

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I suspect a right access issue.

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Sure - here we go:

21:05:51: Running command: requires
21:05:51: # Convert Bias Frames to .fit files
21:05:51: Running command: cd
21:05:51: Setting CWD (Current Working Directory) to ‘/Volumes/Test ext/Astrofoto/Erster Versuch/biases’
21:05:51: Running command: convert
21:05:51: Convert: processing 30 FITS files…
21:05:51: Conversion succeeded, 30 file(s) created for 30 input file(s) (30 image(s) converted, 0 failed)
21:05:51: Running command: cd
21:05:51: Setting CWD (Current Working Directory) to ‘/Volumes/Test ext/Astrofoto/Erster Versuch/process’
21:05:51: # Stack Bias Frames to bias_stacked.fit
21:05:51: Running command: stack
21:05:51: FITS error: bias_00004.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00005.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00006.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00007.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00008.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00009.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00010.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00011.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00012.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00013.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00014.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00015.fit
21:05:51: FITS error: ffopen could not interpret primary array header of file:
21:05:51: FITS error: bias_00001.fit
21:05:51: Could not load image 0 from sequence bias_
21:05:51: Error in line 29: ‘stack’.
21:05:51: Exiting batch processing.
21:05:51: Setting CWD (Current Working Directory) to ‘/Volumes/Conrad ext/Astrofoto/Test Versuch’
21:05:51: Script execution failed.

Could you open a single file?

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I mean for example: bias_00015.fit

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oh sorry - what do you mean? (i am a beginner - sorry)

which file should i try to open? if i open e.g. the bias_00001.fit file - gimp tells me that there is no representable picture.

same with bias_00015.fit. “contains no picture…”

Yes. So my guess are:

  • you tried to work on a disk you have no write permission
  • you don’t have enough space disk in your working directory
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I was thinking opening with Siril

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same error messages with siril. cant open the file…

there should be enough memory (2 TB free space)…i will check the read/write permission. brb :slight_smile:

MacOS has some special cases in memory management.
You can check disk space at the top of Siril.

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it reads:
Mem: 89.4 MiB
Disk Space: 1.8 TB

i think i need to format the external disk…maybe u r right with your hyopthesis (read/write permissions).

brb

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Yeeees! Its working - you were right.

the formatting exFat was wrong - i changed it to Mac extended (journaled). now its working. thank you very much for this fast solution! :slight_smile:

the script is running… :slight_smile:

best!

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