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Old 03-12-2016, 05:30 PM
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Slawomir (Suavi)
Amateur Photon Collector

Slawomir is offline
 
Join Date: Sep 2014
Location: Proserpine
Posts: 3,074
Very interesting topic - thank you Sam.

I also did a test and compared drizzle integration (scaling x2) with 'normal' integration.

As per Rick's response, drizzled image had a slightly lower noise in the low signal / background areas. I compared standard deviation in small areas in two images and got about 15-17% decrease in the standard deviation. Total integration (3nm Ha) was over 12 hours.

There are a few screen shots for reference. Drizzled data is on the left.

The native image scale is 1.33"/pixel, while drizzle integration results in half of that (about 0.67"/pixel).

Suavi
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