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NGC2523, Arp9, is barred spiral galaxy seen in the direction of the Constellation Camelopardalis at an approximate distance of 150 Million Light-Years. It has a strong inner ring just enclosing the bar which is devoid of any star-forming activity. NGC2523 is classified as an SB(r)bc galaxy, and is approximately 130,000 Light-Years in diameter. It was discovered in 1885 by Edward Swift. It has been studied for its global pattern speed, having to do with density wave theory to explain long-lasting galaxy spiral arms and the movement of the stars within the arms. NGC2523B is the edge-on sprial galaxy seen in this image above and to the right. Two other dim small galaxies can be seen to either side of NGC2523. Object: NGC2523 Distance: 150 Million Light-Years Magnitude: 12.90 Date: February 2011 Place: Fort Davis, TX Exposure Details: LRGB:450:150:180:230 unbinned Processing: MaxIm DL, CCDStack, RegiStar, CCDInspector, Photoshop CS3 Optics: 12.5"RCOS Truss Focal Length: 2808mm @ f9 Mount: Paramount ME Robotic Camera: SBIG STL6303E Focuser: RCOS Guiding: Off-Axis with SBIG Guide Camera Filters: Tru-Balance LRGB Gen II 2

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