[Jeff]

A question for some of the more dedicated astrophotographers out there....

After imaging run with the 450D, I end up with a heap of 4272 x 2848 pixel exposures, but when I go to stack subs in Registax I find it has a size limit of 4096 x 4096.

To get down to 4096 width, I have been manually cropping 176 pixels from each exposure using Microsoft Office Picture Manager, but I find it gets a bit tedious when you have several hundred frames from a good night.

Is there an easy way to "batch" trim exposures?

Thanks for reading.

Jeff