Merging pictures to enhance image quality

[duncanc]

I have been shooting series of night pictures of the sky (no telescope) Manual mode, F 2.0 and T 8".

Now I would like to merge or "add" some series of the same zone to get a better quality image. Do anybody know how to it with Jasc Paint Shop Pro 7.04? I tried creating new layers with a copy of each picture but I wasn't able to get it "added" (ORed)

Thanks in advance

[jayspry]

If you have been using a tripod check this out.

http://www.tawbaware.com/imgstack.htm

jays

[duncanc]

I had been using a tripod and I just registered this software. Thank you

[duncanc]

I have using it for some days and it works fine.

[bahri]

Hi All!
Have you tried in PSP Images > Arithmetic > Add.
I think it does the same thing like image stack.
Only I have not experimented with this.

Notes:
Adding two Pics at a time,is it the same like adding the lot at one time ?

I suppose it could be the same Picture which can be duplicated, you do not need to take several Pictures.

Any thoughts?

Carmel Grech

[duncanc]

I'll give it a try, although I already own Image Stacker. Thanks, I'll keep you posted

[Mark Zarn]

Bahri,
If you use only a single picture you will also multiply all the noise in the image...that's why you need several different images shot from a stable source.

Mark

[Mike K]

Here is another description of a photoshop method:
http://www.dpreview.com/forums/read.asp?forum=1009&message=2502988
It was also discussed in a later thread that if the layers are to contribute equally the opacity of subsequet layers should be 50, 33, 25, 20% etc.
Mike K