Banding issue STXL1102

Discussion in 'STX and STXL Series Cameras' started by Jansalex, Apr 20, 2015.

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  1. Jansalex

    Jansalex Standard User

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    Hello,

    I'm having problems with this camera. It's working at -35 degress and I have vertical banding in all the images. No banding in Darks, Bias and Flats.

    Any idea ?
     
    Last edited: Apr 22, 2015
    Jansalex, Apr 20, 2015
    #1
  2. Jansalex

    Jansalex Standard User

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    Anyone about this ?
     
    Jansalex, Apr 23, 2015
    #2
  3. Doug

    Doug Staff Member

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    Could you please post an image so we can have a look?
     
    Doug, Apr 23, 2015
    #3
  4. Jansalex

    Jansalex Standard User

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    Here is a screen photo with my mobile. If you need more quality, please let me know.

    Regards,
     

    Attached Files:

    Jansalex, Apr 23, 2015
    #4
  5. Doug

    Doug Staff Member

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    Raw FITS image please.
     
    Doug, Apr 23, 2015
    #5
  6. Jansalex

    Jansalex Standard User

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    Here is a Fit.

    Regards.
     

    Attached Files:

    Jansalex, Apr 23, 2015
    #6
  7. Jansalex

    Jansalex Standard User

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    anything about this ?
     
    Jansalex, Apr 27, 2015
    #7
  8. Doug

    Doug Staff Member

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    KAI-11002 sensors tend to exhibit a small amount of faint vertical banding, but appropriate calibration should correct it.

    Did you intens to imply this only happens at -35 and light frames, or could you please clarify your original message.

    Thanks
     
    Doug, Apr 27, 2015
    #8
  9. Jansalex

    Jansalex Standard User

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    It happens at -35, -20. -10 but only in the light frames. Do you mean that a camera € 15,000 have this problem?
     
    Jansalex, Apr 28, 2015
    #9
  10. Doug

    Doug Staff Member

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    Please try the Fix Vertical Bars feature in CCDOPS.
     
    Doug, Apr 28, 2015
    #10
  11. Martin Dufour

    Martin Dufour Standard User

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    Hi Doug, i have the same vertical bar with my stlx11002 but at bin 2,3,4 only, all sound good at bin 1. it is related to the power supply ?
     
    Martin Dufour, Sep 21, 2016
    #11
  12. Martin Dufour

    Martin Dufour Standard User

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    I try to post you a fit but your blog can't accept a fit file from my stxl11002 because it is too big ...
     
    Martin Dufour, Sep 21, 2016
    #12
  13. Doug

    Doug Staff Member

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    Upload to ftp.cyanogen.com - FileZilla is a good utility to use.
     
    Doug, Sep 22, 2016
    #13
  14. Martin Dufour

    Martin Dufour Standard User

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    file uploaded:M33-0079B180B2.fit
     
    Martin Dufour, Oct 5, 2016
    #14
  15. Martin Dufour

    Martin Dufour Standard User

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    any news ?
     
    Martin Dufour, Oct 6, 2016
    #15
  16. Doug

    Doug Staff Member

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    Okay I found your file. Are you referring to a very faint vertical banding pattern in the background?

    According to Alan Holmes, this is something that all KAI-11002 sensors do to some degree. It's simply characteristic of the sensor design. There is a command in CCDOPS, under Utility \ Filter Utilities \ Fix Vertical Bars, which can be used to remove the effect.

    Alan also says that it can sometimes be minimized by tinkering slightly with the vertical clock voltages, though it's a trial-and-error thing. If you want to send it over, we can try to optimize it.
     
    Doug, Oct 7, 2016
    #16
  17. Martin Dufour

    Martin Dufour Standard User

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    Thanks,

    I use maxim DL and l alway capture objects over multiple night, so when we register all images, the pattern is not always at the same place ...
    Can you add as an optional parameter in maxim DL a function to remove it right after the capture. So when l will integrate all images, the pattern will already removed.

    I think this will be usefull for all customers ...
     
    Martin Dufour, Oct 7, 2016
    #17
  18. Doug

    Doug Staff Member

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    Good idea. I'll ask that it be added.
     
    Doug, Oct 7, 2016
    #18
  19. astroava

    astroava Standard User

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    Did you add the parameter for removing the banding in Maxim DL 6 ?? We are about adquiring it and it could be a good characgeristic for us.

    Thanks
     
    astroava, May 30, 2017
    #19
  20. Doug

    Doug Staff Member

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    Not yet, there's a lot of work going on right now in other areas.
     
    Doug, May 30, 2017
    #20
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