This is 19x5m exposures, borrowed my mums Nikon D810 for the night as I wanted the largest sensor and smallest pixels I could find
This is however a very compressed version, so compressed it was a real struggle to even get it near 200kb!
Anyway, a question for those that have done wider fields of this region... Is that blue nebulosity on the LHS of the image real? It is certainly strong in the data (1.5 hours of images shot at zenith a few nights ago). It is on both the LHS and RHS but the black areas to the right of the Cats Paw are black.
I've attacked this a few times and looked at a bunch of other images (mostly HaLRGB) and they don't show it. It doesn't seem like a calibration issue, DBE doesn't remove it and although it is on the left and right side of the image, it isn't in the middle which has me thinking it isn't moon cast or a gradient.