problem with skysub=False

sguillotsguillot Member Posts: 2
While using AstroDrizzle on WFC3 images, I want to set skysub=False, which is supposed to switch off the background subtraction.
However, the resulting drizzled image still has some negative pixels, leading me to think that some background subtraction is still being done.
Is it a known bug/problem, or is there something else that AstroDrizzle is performing that I don't know.

Thanks for the help
Sebastien Guillot

Comments

  • mack@stsci.edumack@stsci.edu Member, Institute_Staff, Moderator_DrizzlePac Posts: 29
    HI Sebastien,

    In older versions of Drizzlepac, it was not possible to turn off the sky by simply setting this parameter to False. Instead, you would have to reset the MDRIZSKY keyword values to 0.0 first, and then run AstroDrizzle. This confused a lot of users, so we changed the behavior of the code in the software about 1 year ago.

    To get the latest STScI software, you can install AstroConda using instructions on the following page:
    http://astroconda.readthedocs.io/en/latest/
    The latest version of DrizzlePac is 2.1.4.

    Jennifer
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