Atik Cameras

Author Topic: CFA for Horizon Color  (Read 3403 times)

dpaul

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CFA for Horizon Color
« on: February 16, 2018, 11:57:30 pm »
Does anyone know what the Color Filter Array (CFA) pattern is for the Horizon color camera? I need this information to properly debayer the saved fits files into RGB.

Thanks

David

bwa

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Re: CFA for Horizon Color
« Reply #1 on: May 09, 2018, 07:41:07 am »
Does anyone know what the Color Filter Array (CFA) pattern is for the Horizon color camera? I need this information to properly debayer the saved fits files into RGB.

Thanks

David
Did get an answer to this question?  Also interested in which pattern is appropriate.

bwa

dpaul

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Re: CFA for Horizon Color
« Reply #2 on: May 10, 2018, 12:45:48 am »
Hi BWA

I found that RGGB worked, the attached Pixinsight processed image looks ok.
Previously I'd tried to debayer 2x2 binned images but that screws up the CFA pattern, you must use 1x1.
Also debayer of frame should be done as the ''very first step'' with the raw frames (before calibrating with darks, bias, etc).

Image quality has been significantly reduced to allow posting on the forum.

David

bwa

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Re: CFA for Horizon Color
« Reply #3 on: May 14, 2018, 01:44:05 am »
Hi BWA

I found that RGGB worked, the attached Pixinsight processed image looks ok.
Previously I'd tried to debayer 2x2 binned images but that screws up the CFA pattern, you must use 1x1.
Also debayer of frame should be done as the ''very first step'' with the raw frames (before calibrating with darks, bias, etc).

Image quality has been significantly reduced to allow posting on the forum.

David
After talking to support regarding the Bayer pattern I worked my way through the U-Tube video (https://www.youtube.com/watch?v=v6A2y3W0uJY) ATIK posted regarding determining the correct Bayer pattern and now use GRBG as the default in PixInsight and ImagesPlus.  I find it gives me a much smoother image than RGGB did.

bwa

dpaul

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Re: CFA for Horizon Color
« Reply #4 on: May 19, 2018, 08:37:25 am »
Thanks,

I'll try that pattern too soon

David