Orion mosaic
Took me several attempts to get this 3-tile mosaic working, and here is the result. Because of Christchurch's light halo close to Orion at the shooting location, I had a significant gradient across all 3 tiles which caused me troubles. Then tiny black bands screwed up with registration, and finally the usual mix of high noise floor, lack of images due to short summer nights, etc ...
But anyway it was a good exercise to prepare for a mosaic, preprocess it for RGB and Ha images, and I guess it could look worse. I can always tidy up little things here and there, but doubt I would get too much more out of the shots with my current knowledge of PixInsight. ;-)
3-tile mosaic at 120mm focal length, each is a combination of 5 x 120s @ 1600ISO in RGB and 5 x 240s @ 4000ISO through IR645 filter, all at F6.3.
Orion mosaic
Took me several attempts to get this 3-tile mosaic working, and here is the result. Because of Christchurch's light halo close to Orion at the shooting location, I had a significant gradient across all 3 tiles which caused me troubles. Then tiny black bands screwed up with registration, and finally the usual mix of high noise floor, lack of images due to short summer nights, etc ...
But anyway it was a good exercise to prepare for a mosaic, preprocess it for RGB and Ha images, and I guess it could look worse. I can always tidy up little things here and there, but doubt I would get too much more out of the shots with my current knowledge of PixInsight. ;-)
3-tile mosaic at 120mm focal length, each is a combination of 5 x 120s @ 1600ISO in RGB and 5 x 240s @ 4000ISO through IR645 filter, all at F6.3.