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Calibration Artifact

Don Parkes
in PixInsight
I'm seeing an issue with an integrated image that is clearly a calibration artifact but I do not see any issues with any of the individual calibrated frames. Aside from just blindly trying to redo calibration/registration/integration is there anything in particular to look for to see where and/or how the calibration issue might be arising? I've used the same master flat with prior integrations (nothing changed in the setup) without any issues.

Thanks,
Don

Comments

  • BlockHeadBlockHead
    This is definitely the kind of issue that a screen capture or file would help!
    Without seeing the artifact... I don't think we can guess...

    -the Blockhead
  • Don Parkes
    edited October 2021
    Will do!

    Issue is clearly in upper right/lower left from the smudge evident on the flat. Attached integrated image with a simple nuke stretch + a raw and calibrated sub + the master flat.

    There's also a fairly strong gradient upper right/lower left from the overly friendly moon but at least I know where that came from.

    Thanks,
    Don
    M33_sub_raw.jpg
    6248 x 4176 - 10M
    M33_sub_calibrated.jpg
    6248 x 4176 - 10M
    M33_master_flat.jpg
    6248 x 4176 - 5M
    M33_integrated.jpg
    6248 x 4176 - 8M
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