M57

Exposure Details

Date: 9th September, 2004

Telescope + Camera: 0.254-m SCT + ST237-A at F/3.75 Bin 1x1 Luminance, Bin 2x2 RGB

Resolution: Approximately 1.5 arc seconds per pixel (luminance channel)

Exposure: Combination of 120 seconds each of LRGB unguided.

Notes: Image partially obscured, low in northern sky and under very poor seeing.