With what looked to be a clear & cloudless evening I resolved to try some 15 minute exposures for the first time. Near to Sharpless 2-188 of the previous evening is the nebulosity and dust clouds of Sharpless 2-187 which looked to be a fairly challenging subject due to its relative faintness so a good target for attempting the longer exposures. Unfortunately the transparency was generally poor and deteriorated to terrible as the session progressed so the resulting subs were generally disappointing and getting much of an image at all was a challenging exercise in processing. Definitely another attempt required. Details: 10" F 4.3 Newt. 8x 15 minute exposures @ iso800 with CLS in DSS, CS2, Photobrush & XAT.