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Guides for drizzle and sharpening drizzeled images?

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#1 jeffry7

jeffry7

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Posted 17 October 2021 - 08:50 PM

Hi Folks,

 

I have been playing around with drizzeling lunar images with Autostakkert. There is clearly more to this than selecting a check box in the stacker program.

 

I have looked some and have not come across a discussion of good dithering/drizzle practice.

 

One specific problem I am having is that the images do not respond well to Lucy Richardson sharpening. At least they do not respond as well as non-drizzled images. (I do know that with the resize the kernel size of the convolution has to change.)

 

Does anyone have advice or a pointer to a guide on drizzling?

 

Thanks!

 

Attached is a drizzled image, although it has been resampled down to conform to Cloudy Nights posting limits.

 

Here is a link to the full size image over on Flickr

https://flic.kr/p/2mBPfsc

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#2 Borodog

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Posted 17 October 2021 - 10:22 PM

Is it a color camera or monochrome? Honestly my advice for drizzling color images is, don't.



#3 jeffry7

jeffry7

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Posted 18 October 2021 - 07:42 AM

Is it a color camera or monochrome? Honestly my advice for drizzling color images is, don't.


It is a color camera. Yeah, thinking about it, I can see how drizzle might be a problem on a Bayer sensor.

PIPP has a feature to interpret a raw color image file as mono. I may try that.


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