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NGC1499 (Sh2-222) California

The California Nebula (NGC 1499) is an emission nebula located in the constellation Perseus. It is so named because it appears to resemble the outline of the US State of California on long exposure photographs. It is almost 2.5° long on the sky and, because of its very low surface brightness, it is extremely difficult to observe visually. It can be observed with a Hβ filter (isolates the Hβ line at 486 nm) in a rich-field telescope under dark skies. It lies at a distance of about 1,000 light years from Earth. Its fluorescence is due to excitation of the Hβ line in the nebula by the nearby prodigiously energetic O7 star, xi Persei [wiki]

Photo Details

  Telescope: FSQ106EDX (530 mm) Takahashi

  Camera: Sbig STL1100XM, internal Sbig Filter wheel, Baader 50mm round HLRGB filters

  Mount: NJP Takahashi

  Guiding: self-guided

  Exposure: Ha 18x30min RGB 5x8min each

  When: October/November 2015

  Other information: All taken in the city of Tarnów Poland

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