Is it time to clean my filters?

Discussion in 'Off Topic' started by rockenrock, Oct 26, 2021.

  1. rockenrock

    rockenrock Cyanogen Customer

    Joined:
    Mar 12, 2015
    Messages:
    54
    Hi,
    Attached is a typical flat field which has many dust donuts (after my stretch). Some people say this dirt is subtracted from the image and thus has no effect on the result. I find a few dust donuts not completely subtracted out of my image.

    So is it necessary to clean my filters?
    Thanks,
    Roger
     

    Attached Files:

  2. Colin Haig

    Colin Haig Staff Member

    Joined:
    Oct 27, 2014
    Messages:
    5,526
    Location:
    Earth
    That's quite a bit of dust, so it's time.
     
  3. Doug

    Doug Staff Member

    Joined:
    Sep 25, 2014
    Messages:
    8,642
    Agree with Colin, except for that "quite a bit" part. I'd go with "huge".
     

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