RCOS 12.5 inch F/9 RC, SBIG ST8E, L:60m, RGB:10m, 2X binned
Saturn Nebula, NGC7009
Amateur CCD Astronomy
By Richard D. Jacobs, M.D.
By Richard D. Jacobs, M.D.
RCOS 12.5 inch F/9 RC, SBIG ST8E, L:60m, RGB:10m, 2X binned