View Single Post
Old 03-12-2016, 04:30 PM
Slawomir's Avatar
Slawomir (Suavi)
Registered User

Slawomir is offline
Join Date: Sep 2014
Location: North Queensland
Posts: 3,238
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).

Attached Thumbnails
Click for full-size image (drizzle1.jpg)
135.2 KB27 views
Click for full-size image (drizzle2.jpg)
160.5 KB30 views
Click for full-size image (drizzle3.jpg)
120.8 KB35 views
Reply With Quote