M1 - The Crab Nebula
Narrowband
The Crab Nebula is a remnant of a supernova that occurred in 1054, and is
also the first item listed in Messier's famous catalog. It lies about 6500
light years distant in the constellation of Taurus. This is a false colour
image with SII=red, H-alpha=green, OIII=blue, and has been upsampled by
200%.
Takahashi Sky 90 at f/4.5
SBIG STL-4020M (remote guide head)
Takahashi EM-200
H-alpha, OIII, SII: 2 hours each channel
Processed with Maxim/DL, CCDStack, and Photoshop CS4
Noel Carboni's Astronomy Tools
4-Jan-2005 (Canon 300D)
