Photoshop CS2 combining images

[anthony.tony]

Hello there in Photoshop CS2 how do I combine say 4 ,45second exposures to make one stronger pic.or say 3, 60 second exposures to make one better pic .reguard's tony

[seeker372011 (Narayan)]

use layers.use normal as blend mode-first image as background. Second image 50 %, third 33% , fourth 25%

But there is a much betteroption for stacking. Download Deepsky Stacker--if it is Deep sky images you are after (its free) and its great
or IRIS but thats a lot harder to use even if far more powerful

if its planets-and I dont see why youd use 60 sec images for planets-registax is your freeware answer

so to summarise -can be done in photshop but why bother, there are better freeware tools that do the job much better

use photsohop for curves and so on after you have done the stacking
my 2c
Narayan

[sheeny (Al)]

G'Day Tony,

The basic method is to open each of the images in PS.

Pick one image to start with then:

1. add an extra layer (Layer, New, Layer).

2. Make the opacity = 100/n, where n is the number of photos stacked so far. i.e. for the second layer (counting the background) opacity = 50%, for the third - opacity = 33%, etc.

3. Select the image you want to add to the stack, "select All, copy"... return to the first image and make sure you have the new layer selected, then paste in the second image.

4. Repeat steps 2 and 3 till all the images are stacked.

Now if you have no image drift between frames, that will work OK. If the image moves from frame to frame, you will need to register each layer with those below it. This is best done by Inverting the layer, and dragging it until the appearance of the image is as close to uniform grey in colour as possible, then Invert the layer back to normal.

See also http://www.iceinspace.com.au/forum/s...ighlight=layer

Hope this helps.

Registax or Registar is often easier...

Al.