Quote:
Originally Posted by gregbradley
Oh I must've missed that. So the Ha is from 2 different cameras. Yeah Registar is the king there. But if you used an already aligned master from your LRGB as the base image in Registar wouldn't that get it perfect?
That way you are always aligning back to your LRGB image.
Greg.
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Hi Greg, You would think the aligment would be perfect but as a general rule I have found that the image does show some rotation which cannot be handled by Registar during the scaling process and I think any rotation changes are based on the centre of image rather than the guide star used which in most cases is a diferent star (at least for me). Maybe I should record info on images , guide stars for use over several nights but I do find it easy enough to adjust the rotation in CCDStack after correcting image scale in Registar. May be not the correct method but it does work for me.