Author Topic: Bayer-Drizzle vs standard drizzle for DSLR  (Read 3304 times)

Offline Philippe B.

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Bayer-Drizzle vs standard drizzle for DSLR
« on: 2015 August 31 06:36:28 »

Hello
To follow the different posts on bayer-drizzle, I would like to share my results.
Bayer drizzle is an amazing process to increase the resolution of a DSLR image (or color CCD)






Instead on only use debayered calibrated images like this :


DEBAYER VNG  (zoom 400%)
 


We also use the bayered-RGB version of the files when drizzle stacking :


BAYER RGB (zoom 400%)
 


At the end we can see the difference :




Final image : bayer drizzle 2x   vs  drizzle 2x (zoom 200%) :


 


And also : bayerdrizzle vs drizzle vs single integration (no drizzle)  zoom 200% and 400% for single integration


 




You need an amount of images but I use this technic on A7s (modded) images.




Another example zoomed 300x :
 




Hope Pixinsight team will "better" integrate this possibility in PCL modules (process) as multiple debayer/bayerRGB (like in the BatchPreprocessing) and for sure in the Drizzle process where we can select bayered or debayered files !!! >:D


Anyway, thanks to PI team for this method  8)

Offline NGC7789

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Re: Bayer-Drizzle vs standard drizzle for DSLR
« Reply #1 on: 2015 August 31 06:39:52 »
Thanks for that fantastic demonstration! It's striking that not only is resolution increased but it's almost as if chromatic aberration is reduced. I see significantly less red halo around the stars. Is that because the red channel is tighter?

Offline Philippe B.

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Re: Bayer-Drizzle vs standard drizzle for DSLR
« Reply #2 on: 2015 September 01 00:31:06 »
Hello


Yes, my A7s is modded in the red. "Astrodon" UV-IR filter inside. So, it can exist a little red tint or halo.
My D810A is also red enhance. So...


But, de careful, these image are direct from integration with an automatic (non-linked channels) STF. So colors are not the best rendition.