M83, a very bright nearby face-on spiral. Note salmon-pink core of older stars, bright blue clusters of hot young OB stars in the spiral arms, and fine dust lanes. An explore of the full-size image will show very many background galaxies.
Exposure details gone forever but of the order of L6h, RGB 1.5h.
STL11000M on 20" PlaneWave CDK on modified MI-750 fork. All software, firmware, and electronics is my own design and build.