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Narrowband Data Processing
Images obtained with a OSC CCD Camera

I use an QHY10 OSC CCD camera for astronomical imaging. With the OIII filter green and blue data will be recorded which need to be converted into the green channel. Equally for the Hβ filter where the recorded green and blue data will result into the blue channel. The red channel will be constructed from the red data recorded through the Hα filter, G data is very weak and could therefore be neglected (see below graph for explenation).


Sensitivity graph for the QHY10 CCD camera

This all according the following procedure :

Red Channel

    - Calibrate and De-bayer the Hα images
    - Extract red (R) channel from the Hα images and convert them to gray scale images
    - Register and Stack the gray scale R images
    - Save this "raw" red channel result

Green Channel

    - Calibrate and De-bayer the OIII images
    - Extract green (GOIII) and blue (BOIII) channels from the OIII images
    - Convert them to gray scale images (GOIII and BOIII)
    - Register and Stack the gray scale GOIII and BOIII images
    - Save this "raw" green channel result

Blue Channel

    - Calibrate and De-bayer the Hβ images
    - Extract green and blue channels from the Hβ images
    - Convert them to gray scale images (G and B)
    - Register and Stack the gray scale G and B images
    - Save this "raw" blue channel result

Final processing :

  - Final processing steps as explained on the "Mono data processing" page (click "Next" button below).


© Copyright Rob Kantelberg
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