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California Nebula - NGC1499, 



California Nebula - NGC1499

Technical card

Imaging telescope or lens:Takahashi FSQ85

Imaging camera:QSI683wsg

Mount:Orion Atlas EQ-G + EQDIR

Guiding camera:Lodestar

Software:PixInsight PinInsight 1.8

Filter:Astrodon 5nm Halpha

Accessory:USB FOCUS USB_focus

Resolution: 3101x2360

Dates:Oct. 10, 2014

Frames: 50x300"

Integration: 4.2 hours

Avg. Moon age: 17.00 days

Avg. Moon phase: 94.46% job: 585966


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 (also known as Menkib, seen at top right).


Imaged from Weston, Florida over many nights and had to discard quite a few exposures due to light pollution.



License: Attribution Creative Commons


California Nebula - NGC1499,