Masatsugu : I have followed your advices and tried to get better G and B images. Apart from the two RVB series I made three minutes avi files (instead of 1-2 generally) for the 03 H 27 green image and the 03 H 35 blue image, in order to seriously increase the s/n ratio. The blue filter for the last one was tilted following Okano's idea, it seems that the dark markings are erased a bit more but this is not evident. I don't really know if these two last shots show the evening mist, maybe over Argyre, but I don't really see the presence of the morning mist.