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How to extract only one green channel (from the two available) from an rggb image without going bankrupt?

1eboeneker
Affiliation
American Association of Variable Star Observers (AAVSO)
Sat, 06/26/2021 - 01:15

Hello everyone,

I already know that MaximDL is very capable of extracting the four color channels in a RGGB image from a DSLR or OSC cameras. Does anyone know a way of extracting only one green channel without paying the outrageous amount of 600 USD? I tried to extract the channels with Iris, using the following sentence in its command line:

SPLIT_CFA [C1] [C2] [C3] [C4]

But I get the annoying message "Cannot save file", and do not know how to solve it.

Any help will be most appreciated.

1eboeneker
Affiliation
American Association of Variable Star Observers (AAVSO)
Sat, 06/26/2021 - 02:59
Found the solution...

The solution is Iris. Actually I forgot to change the working directory. When I did that, the "Cannot save file" thing was resolved.

hrickdiz
Affiliation
American Association of Variable Star Observers (AAVSO)
Fri, 07/09/2021 - 16:53
ASTAP can extract color channels

In the free multi-function program ASTAP, it is possible to extract an individual channel from the Bayer array.  It also has a function to split the three channels out into RGB if you provide the Bayer pattern.