The 135mm SLR with the artemis gives a useful field of view for the North American Nebula. I know there are lots of images of the NAB, but in all these years, I've never actually done one, so here it is! I didn't put he 135mm wide open, I stopped the aperture down by two clicks to sharpen stuff up.
Captured in ArtemisCapture, calibrated in ImagetoolsCa, combined in maxim, thuggery in photoshop. Total integration time 3.5 hours.
Exposure Details :
Astrodon 6nm Ha MPCC 14x900s on 57mm @ F5 with ART285
Curdridge Observatory, Southampton,UK