Last weekend’s star party was relatively relaxing, largely because the target I was after could be photographed for only a few hours each night, so I got to bed by 2 or 2:30 each night.  The target was 3 nebulae in the constellation Sagittarius, the Lagoon (M8), Trifid (M20), and Cat’s Paw (NGC6334).  All of these are primarily emission nebulae, but are often photographed in broadband color (RGB) to include some reflection components, especially the blue region on the north side of M20.  North is down in this photo, and this blue region shows only very faintly as a light […]