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| Click here to enlarge Eastern Veil and Pickering's Triangle
The Veil Nebula, also known as Cygnus Loop, in Cygnus constellation is a supernova remnant covering an area of 5 times the full Moon. Between 5000 to 8000 of years ago, a star exploded and its remnants have been expanded since then. The supernova lies at a distance of 1400 light-years approximately appearing to be rope like filaments. Visually it is difficult to see, but the aid of an OIII filter can help to distinguish the nebula from the sky background, due to part of the light emitted by the nebula is in this narrow band. The foto was taken using narrowband Ha and [OIII] filters during two different nights. The night the Ha images were taken on a very clear night with quite good coditions. It has allowed us to go deep during the image post-processing revealing the dimmest parts of the nebula. Source: Wikipedia and NASA/APOD Lens: Megrez 72 APO + FF 0.8x F/stop: 4.8 Exposure: Ha baader filter, 8 x 15 min; and OIII 7x15min (unbinned) Mount: Vixen Sphinx Deluxe Camera: Artemis 4021 Guiding: Throught WO 66 f5.9 with Meade DSI and MaximDL software Location: Majada del Hombro, Huerta del Marquesado, Cuenca, Spain Date: July 31st and August 2nd 2008 Processing: Calibrated and aligned with DSS, stacked with MaximDL and postprocessed with PixInsight 1.2 | 7/08/08 22:01 |
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