Andromeda Galaxy - M31

Camera: Nikon D5500 unmodified

Lens: Nikon 300/f4 ED

Aperture: f5.2 using stepping rings as aperture mask

ISO: 1600

Exposure: 112 x 1-minute = 1.86 hours total integration time

Tracker: Sky Watcher Star Adventurer mini-EQ mount

Sky conditions: Dark sky, poor seeing, Ottawa light pollution

Processing tools:

rnc-color-stretch

Photoshop CS5,

Gradient Exterminator,

HLVG (Hasta La Vista, Green!)

Done