Hi all, i am using my Sbig 16200 with great sutisfaction in a remote observatory in Colorado owned by my friends; here my last images with the W.O. Spacecat : https://www.flickr.com/photos/17910585@N06/albums/72157662167213281/page2 where you can see also some images realized with an Epsilon 180 Takahashi and an ASI 071 MC PRO color; even if the taka E180 is f/2.8 the colors of this Asi 071 are always difficult to come out; since i have seen on a dark frame a residual image of a bright object taken before this dark frame i am having a doubt: is it possible that this ASI camera, this model, can suffer RBI? my friend is sure that the dark frames were taken rightly. Thanks for a kind reply even if the question should be asked to ZWO firm who surely will reply that is not possible. Carmine P.S.: i think that the actual cmos sensors are not good like the old ccd sensors..... but this is the 'progress'..... Good luck and good new year to all.