NM104 - Edge-on Spiral Galaxy, The Sombrero Galaxy

(click image for full resolution)

Distance: 40 million light years
Telescope: 24-inch RCOS
Camera: SBIG STL11000

Custom Scientific Filters
Exposures: 2 hours 20 minutes + 30:20:30 in R:G:B filters
Total Exposure Time: 3 hours 40 minutes

Adam Block / Mount Lemmon Sky Center / University of Arizona