Hi unwind, This was the output filesize from the stitcher, it was PSB (photoshop large document) format. I think it was so big because it saved the file with

Hi unwind, This was the output filesize from the stitcher, it was PSB (photoshop large document) format. I think it was so big because it saved the file with an alpha channel which was not entirely necessary in this particular instance. And with some further lossless compression I could probably get the file down to 100GB or so. Jeffrey