RCOS 12.5” F/9 RC, SBIG STL11K, L:60m, RGB:15m, 2X bin
Sculptor Galaxy, NGC253
Amateur CCD Astronomy
By Richard D. Jacobs, M.D.
By Richard D. Jacobs, M.D.
RCOS 12.5” F/9 RC, SBIG STL11K, L:60m, RGB:15m, 2X bin