Moon - Stacking

[idigitize]

I can understand why people stack hours of exposure of dso objects, but it seems quite common to stack multiple frames for lunar pics too, I was just trying to work out what the exact benefits were?

[JamesF]

Noise is present regardless of whether you have an image of a DSO or the Moon.  Stacking lunar images gets rid of some of the noise allowing the image to be further transformed (generally sharpened) to an extent that is not possible with a single frame.

James

[idigitize]

Thanks James!

[JamesF]

The difference isn't shown brilliantly as it's not what I was setting out to do, but you get the general idea if you look at the images in my posting at the start of this thread:

http://stargazerslounge.com/topic/184192-full-disc-lunar-imaging-with-a-dslr/

The one produced by PIPP is a single frame, and then there's the last image in the post.

What is quite obvious from looking at the edges of the frame in the output from PIPP is the enormous amount of noise in the original images.

James

[idigitize]

Just read though it all, cheers for that. I love how clean the darker tones come out, makes a huge difference.

[glowingturnip]

also stacking will average out the seeing distortions between shots