This is an image out of Swan Reach Imaging of M1 (the Crab Nebula) It must have been a very bright visible star during the day when it first exploded. I wonder what the people of the time thought of it all? They must have utterly freaked out at this new star being visible in the sky and assumed all sorts of weird omens.
It's a particularly tough target here at our southern latitude as it never gets higher than 33 degrees above the horizon.
The image contains Ha, OIII, SII LRGB. 26.25 hours of data was used in the image but a lot of data had to be rejected due to seeing conditions at lower altitudes.
Overall I am quite happy with image though.
Edit - Newer image supplied.
Click here for the larger image.