Simcoe Skies Astronomy

C23 (Caldwell 23) - NGC 891

C23 - NGC 891 This is a spectacular edge-on galaxy, about 27 Million light years away. It's barely detectable in the eyepiece from my back deck. Magnitude: 10.8 Location: Andromeda Size: 13.5'x2.5' Date: September 7, 2008 Camera: DSI Pro Exposures: 60 Exposure length: 30 seconds Gain: 32; Offset: 0 Filter: none Processing notes: captured, aligned & stacked in K3CCDtools, histogram stretching, noise reduction and contrast adjustment in Photoshop. Notes: A guided long exposure with a skyglow filter would undoubtedly bring out more detail. Still, dark dust lanes showed up nicely and overall contrast is good.