Stacking

What is the cheapest (perhaps freeware) to stack some digitized film images for further processing? I have a handful of images that I have hours worth of well tracked and exposed data but have actually only processed one of the subs for each as I don't know how to do it.

I make the assumption here that the preferred way to process these are to register/stack these, then process with PS. I have the latter, but nothing else except AIP, CCDSOFT.

Regards,
Kevin

I use Deep Sky Stacker for digital camera images, and I suppose it would work for digitized film images as well. It is free, and you can find it at

http://deepskystacker.free.fr

It will register and stack lights, darks, flats, etc. and save the result as a 32 bit TIFF file. You don't have dark frames to mess with. You can then open the TIFF file with PS, convert it to 8 bit, and go from there.

Steve