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NGC6781

1.11.2013

NGC6781

NGC6781 is a planetary nebula seen in the direction of the Constellation Aquila a few thousand Light-Years distant near the Milky Way. The nebula was formed by expanding shells of gas ejected by the central (now) blue/white white dwarf star during its latter stages of life. The expanding shells of gas floresce from the ultraviolet radiation of the magnitude 15.5 central star which is very hot and dense, forming a beautiful circular gas bubble with lobes on the north and south sides, which is approximately 2 Light-Years across. Eventually, the white dwarf star will cool down and fade. Object: NGC6781 Distance: A couple of thousend Light-Years Magnitude: 12.5 Date: August 2010 Place: Fort Davis, Texas Exposure Details: LRGB:480:180:180:260 unbinned Processing: MaxIm DL, CCDStack, Photoshop CS3 Optics: 12.5" RCOS Truss Focal Length: 2808mm @ f9 Mount: Paramount ME GEM Robotic Camera: SBIG STL6303E Focuser: RCOS Guiding: Off-Axis with SBIG Guide Camera Filters: Tru-Balance LRGB

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Dimensions: 2025 x 1518
File size: 1213.5 kbytes
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