M27

Exposure Details

Date: 4th October, 2004

Telescope + Camera: 0.254-m SCT + ST-2000XM at F/6.2 Bin 2x2 Luminance, Bin 3x3 RGB

Resolution: Approximately 2 arc seconds per pixel (luminance channel)

Exposure: Combination of 50 minutes luminance (10 minute sub exposures),

15 minutes each of Red, Blue & Green (5 minute sub exposures).

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 6 minutes luminance, 6 minutes each of Red, Blue & Green all 120 second sub exposures unguided.

Notes: Object very low in northern sky and under very poor seeing.