Multi-NB extraction...
 
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Multi-NB extraction doesn´t work

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(@wstumpferlgmx-de)
Main Sequence Star
Joined: 5 years ago
Posts: 16
Topic starter  

Hi Mabula,

with rev. 2.0.0.39 I can select f.e. Multi-NB extract H-a + Oiii. In the documentation is noted that automatically 4 files are generated in Register 6. But I get only on file and this is the classical Multiband Color. 

Also if i choose f.e. Multi-NB extract Oiii I get also a classical Multiband Color with no separated Oiii Mono image.

Whats wrong ?

Thank you

Werner


This topic was modified 3 months ago by Werner Stumpferl

   
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(@wstumpferlgmx-de)
Main Sequence Star
Joined: 5 years ago
Posts: 16
Topic starter  

here an example. Both files are made with a OSC (QHY268C) and the Optolong L-Ultimate (Ha+Oiii)

image

Selected Multinarrowband extract in Tab 0

image

Two Multinarrowband files loaded

image

after ingetration in Tab 6 I get only one file ... here TEST.fits (NOT 4 files). Test.fits is a multicolor file, no Monofiles !

image

 



   
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(@digitaliz-se)
Neutron Star
Joined: 5 years ago
Posts: 109
 

Are you trying to do the operation using already stacked and debayered FITS? 
Try on the raw fits files and see if the issue persists.

 

/Stefan



   
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(@wstumpferlgmx-de)
Main Sequence Star
Joined: 5 years ago
Posts: 16
Topic starter  

Hi Sefan,

yes, normaly my workflow is that I extract NB-Channels if I´m starting postprocessing and if I´m ready with all sessions. I have tried with unstacked raw files and this works.
Seems to be a bug that stacked files can not be extracted.

CS
Werner

image


   
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(@digitaliz-se)
Neutron Star
Joined: 5 years ago
Posts: 109
 

I dont think it is a bug though. The difference between stacked and raw fits is that the stacked is already debayered. 
Split chanels in the stacked files and stack B and G channels to make a master Oiii.



   
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(@wstumpferlgmx-de)
Main Sequence Star
Joined: 5 years ago
Posts: 16
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until 2.0.0.38 it has worked so far because this was my workflow for years.



   
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(@astrogee)
Black Hole
Joined: 8 years ago
Posts: 222
 

I agree with @digitaliz-se. You seem to be trying to combine already extracted NB files. The multi-band extract feature is for extracting NB portions of OSC files. Your HO1 and HO2 are presumably already NB files and are ready for combining in the RGB combine tool.



   
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(@wstumpferlgmx-de)
Main Sequence Star
Joined: 5 years ago
Posts: 16
Topic starter  

The files beginning with HOxxxx are stacked OSC files made with a dual-narrowband filter, so they are RGB. In the past until 2.0.0.38 it was possible to extract different narrowband from stacked files like "extract Oiii" etc. As a result I got a mono file with f.e. Oiii or Ha.

If this is not a bug in 2.0.0.39 than I have to change my workflow in the future. But how I said ... in older versions it has worked.



   
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(@mabula-admin)
Universe Admin
Joined: 9 years ago
Posts: 5056
 

Hi Werner @wstumpferlgmx-de,

Thank you very much for sharing your issue. And thanks everyone for your suggestions as well.

All the Bayer/X-Trans algorithms in 0) COLOR SETTINGS (or the old RAW/FITS menu) will only affect data that needs to be demosaiced/debayered.

All stacks/integrations will always be already debayered/demosaiced and so the algorihms in 0) Color Settings will do nothing. I can not see how older APP version would do so either. 

I also see from the filenames in your screenshot that the files are run through GraXpert? The output is very likely only 3-channel RGB data instead of 1 channel CFA data that needs to be debayered.

Let me know if this makes sense and/or solves this.

Mabula



   
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