I've finally returned from a ~15,000LY round trip deep in the Perseus arm, out toward the Heart and Soul nebulae. On my way in, around 6,100LY out, I noticed a deep blue dot in the sky, much larger than any stars, and growing larger with each jump. I checked the galaxy map and found it nearby. It has a nebula label, though this is the first of its kind I've encountered. Not sure what's going on with it--remnants of a supernova? Star collision? There's a black hole at its center. While it appears tiny on the map (I suppose it is compared to most nebulae), it's absolutely massive and very luminous, casting blue light everywhere. Second picture is from 2.5LY away.
Of course, I had to go inside. It's gorgeous in there. 50km from the hole:
Earned $12 million from the trip with fairly judicious surface scanning (mostly stars and gas giants, and of course any terrestrial/water worlds), nabbed a few original black hole discoveries (one was binary with a Herbig AE/BE star and had 10 other stars orbiting them with several gas giants, one with life, Gludgoea FG-Y G3... that system alone was worth about a million fully scanned).
One other pretty notable; found a neutron star system with just one planet, a nicely ringed water world:
Good times in deep space, man. Good times.