2 Hours on the California Nebula in Imaging - Deep Sky Posted 9 hours ago 5 hours ago, The Lazy Astronomer said: @Grant93: assuming you did use Startools, did you make use of the superstructure module at all? I found that it can sometimes create the appearance of fairly aggressive noise reduction. Yes I did use Startools.. I can't fully remember as I did this process last weekend.. but if I do use Superstructure now days, I'll usually lower the aggressiveness a significant amount. I should of mentioned it was processed with StarTools in the post, I forgot sorry!