Here is M43, the nebulosity surround in NU Orionis, the brightest star in this image. NU Orionis is a B-type star and radiates UV radiation that probably makes M43 glow.
This image is just 16x240" through the CFF 290 Classical Cassegrain at eff. f/8.1 on a night of about average seeing, which means that 2453mm is too long for the seeing conditions. It was shrunk 14% to accommodate the poor seeing conditions. Still, it is an interesting image. M43 is always overlooked for its near neighbor M42.
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