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California Nebula, 



    
        

            José J. Chambó

Technical card

Imaging telescopes or lenses: Meade ETX-70

Imaging cameras: Canon EOS 350D / Digital Rebel XT

Mounts: LXD75

Software: DeepSkyStacker  ·  PixInsight LE


Dates:Feb. 6, 2011

Frames: 23x90" ISO1600

Integration: 0.6 hours

Darks: ~15

Flats: ~10

Bias: ~10

Avg. Moon age: 3.07 days

Avg. Moon phase: 10.32%

Bortle Dark-Sky Scale: 3.00

Mean SQM: 20.90

Mean FWHM: 3.99


Basic astrometry details

Astrometry.net job: 107466


Resolution: 620x388

Locations: Benali - Valencia (Spain), None

Description

Emission nebula placed at south of constellation of Perseus. NGC 1499 is known by the name of California Nebula because your shape had should remind on 1885 to your discoverer, at that time the amateur astronomer Barnard, the shape of the State of California in the United States of America.

The red brightness of nebula is because your H-alpha emission caused by the star Menchib (Xi Persei) at upper. Even though 2,5º wide, your poor surface brightness do that hardly can be observed visually and only can be saw in detail by photography.

More info into the Blog  C O M E T O G R A F I A  (in Spanish)

Comments

Histogram

California Nebula, 



    
        

            José J. Chambó