I tried M42 again tonight with/DSI and ST80 (with .56 focal reducer & skyglow filter). Nothing to write home about, but I got some practice before the clouds rolled back in. Focus may be a little soft, again.
averaged stack (levels equalized) of:
25x15s
20x30s
15x42s
10x60s
5x85s
Tweeked in the Gimp ( mild unsharp, curves, levels).