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Loading Flats in WBPP

I have multiple nights of data on M81. I have not changed the imaging train so I only took LRGB flats after the first night. My question is how do I get wbpp to load in flats for each night. I am using a grouping keyword so when I use the "Directory" button all of my light frames get correctly loaded for each night and each filter; however, the flat files only get loaded into the first night and therefore only calibrate those frames. How do I get PixInsight to recognize the data collected on subsequent nights should also use those same flats from the first night. (i.e. how do I get green check marks for the entire "Flats" column on the calibration tab). Sorry, but I was unable to upload a screenshot of the wbpp "calibration" tab. Thanks.

Comments

  • Generally the issue is that the grouping keyword is found in multiple places.
    I think the move to the new site might have tweaked this forum's ability to accept images. 
    Could you please post links to the images where you have uploaded to some cloud drive?
    (google drive, one drive...etc). Then I can likely solve the issue.

    -the BLockhead
  • try this link. You should be able to see the wbpp screenshot

  • Thanks! It would help to see your file names for the FLats.
    According this this you do not have a flat with a fillename that contains "20250227" for example. 
    This is either because you literally do not... or because the grouping keyword you used for this set of flats (in the filename or folder name) is not the same as the ones the lighting up (and what you input into the field in WBPP). So can you firm the grouping keyword is the same in all files/folder names? You would just need to edit the folder names if this is the issue and the way you set it up.

    -the BLockhead
  • Hi. The grouping keyword in WBPP is "Night". My light frames are in subfolders named "Light" under the following parent folders
    Night_20250223
    Night_20250224
    Night_20250225
    Night_20250227
    Night_20250228

    I only took flats on one night since my imaging train has not changed. The flats are in a folder called "Flat" under the parent folder
    Night_20250223

    I messed up and did not capture blue data on the first night (Feb 23) so I ended taking blue flats on Feb 24. That is why you see row 1 of blue being calibrated with data from the 24th.
  • Oops forgot. My flat names are of the form 2025-02-24_05-46-17_L_-9.80_0.25s_0000
  • And you have these flats in a folder called ""Flat" in the folder Night_20250227 ? According to your screen shot you do not... OR the word "night" is also in the filename. 

    You will need to present everything I am afraid- pictures of your folders, of the filenames....of all of the screens of WBPP. The answer is there...I just do not have a complete picture. 

    -the Blockhead
  • edited March 3
    I was able to figure things out. I rewatched your WBPP video, "Grouping for Multi Nights Demo" and at the 8:30 mark it discusses the scenario I have. I went into the "calibration settings" box and forced WBPP to use the Flats from another folder for each of the filters. Thanks again for helping me out. Your videos are invaluable.

    I have included a screenshot of the Calibration tab from WBPP.

  • If I understand... my scenario was that the flats did not change for a small number of nights. So Flats of 20250207  could be used to calibrate data on the night of 20250208 and 20250209 for example. That would be the usage I likely demonstrated. If this is your situation as well... then yes. AND... zero other content creators illustrate this kind of thing.

    -the Blockhead
  • You are correct, that is my situation exactly regarding flats usage. Thanks again for the content. Looking forward to your new website!
  • There is another way, of course. You could simply move the data that was taken on the other nights into the same folder that matches the keyword value of the necessary flats. 

    But anyway... it seems like you are all set.

    -the Blockhead
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