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help with image processing
I took a few exposures of m42 last night and i thought id have a go at processing them today theres 9x 30 sec exposures and 15x 5 min ones with 2 darks i used my nikon d90 for them, i have stacked both image sets individually using deep sky stacker in the hope to merge the final 2 images in photoshop that was going fine until i tried adjusting the curves and colour both options are not available what have i done wrong?
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