Simcoe Skies Astronomy

M17 - The Swan Nebula

M17 - The Swan Nebula (also know as the Omega Nebula) - NGC 6618 Magnitude: 6.0 Size: 11.0' x 11.0' Location: Sagittarius Date: May 27/06 Exposures: 75 Exposure length: 10 seconds Amp on setting: OFF Brightness: 87 Gain: 57 Gamma: 0 K3 Brightness Level Meter: 255 (star saturated) Filters: Orion Skyglow Filter Magnification: 0.6x Focal Reducer Notes: Gamma set too low - should be increased to 50%.