How do you counter field rotation.
Hi everyone, as some of you will be aware I have been dabbling in blending Ha data into RGB data to enhance a RGB image.
I have struck a little problem. I usually tru to capture and stack the RGB data then do the same with the Ha data. This is fine but when I take bothe final images into photoshop to blend the two images. What I am finding is that the time between the RGB and Ha datais causing a small difference in the final position of the stars due to field rotation I think.
If I was to just stack the to images I wouldn't have a problem but trying to blend the two images is a problem. I cannot for the life of me find anyway to anchor a point on an image and rotate the image around this point untill it matches the RGB image.
ANYONE HAVE ANY IDEAS????
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