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IC356

1.11.2013

IC356

IC356, also with the Arp peculiar galaxy designation Arp213, is located about 40 Million Light-Years distant toward the Constellation Camelopardalis, behind a curtain of gas and dust in the Milky Way. IC356, like its more well known neighbor IC342, has its light (particularly blue) extincted by the Milky Way gas and dust, but even more so for IC356 which is much more distant. The most notable feature of IC356 other than its lack of color is the prominent radial spoke or dust lane which crosses the entire disk and then bifurcates at the core, seemingly forming a torus of gas and dust wraping around it. From the orientation of the torus, it is conjectured that it may be a polar ring object. These peculiarities along with a previously reported bi-polar outflow, a high rotational velocity and flat rotation curve in the outer reaches indicating a large dark matter halo combine to make IC356 a very odd system indeed. Object: IC356 (Arp 213) Distance: ~40 Million Light-Years Date: January 2012 Place: Fort Davis, TX Exposure Details: LRGB:510:140:180:240 unbinned Processing: CCDInspector, CCDStack, MaxIm DL Pro, Photoshop CS3, etc. Optics: RCOS 12.5\" Truss Focal Length: 2808mm @ f9 Mount: Paramount ME Camera: STL6303E SBIG Focuser: RCOS Guiding: Off-axis with SBIG RGH Filters: Tru-Balance 2\" LRGB Gen II

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Dimensions: 2115 x 1497
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