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Contains:  California nebula, NGC 1499, The star ξPer
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NGC 1499 The California Nebula HAOIIRGB, 


            Randal Healey
NGC 1499 The California Nebula HAOIIRGB

NGC 1499 The California Nebula HAOIIRGB

Technical card

Resolution: 3273x2510

Dates:Sept. 3, 2018Sept. 4, 2018Sept. 5, 2018Sept. 6, 2018

Astrodon BLUE 36mm - Gen2 E-Series Tru-Balance: 19x180" -15C bin 1x1
Astrodon GREEN 36mm - Gen2 E-Series Tru-Balance: 19x180" 15C bin 1x1
Astrodon HA 36mm - 5nm: 40x600" -15C bin 1x1
Astrodon LUM 36mm - Gen2 E -Series Tru-Balance: 22x180" -15C bin 1x1
Astrodon Olll 36mm - 3nm: 25x600" -15C bin 1x1
Astrodon RED 36mm - Gen2 E-Series Tru-Balance: 20x180" -15C bin 1x1

Integration: 14.8 hours

Darks: ~50

Flats: ~49

Bias: ~100

Avg. Moon age: 24.17 days

Avg. Moon phase: 29.80% job: 2241228

RA center: 59.705 degrees

DEC center: 36.457 degrees

Pixel scale: 2.223 arcsec/pixel

Orientation: 187.819 degrees

Field radius: 1.274 degrees

Locations: Healey "Utahopia" Observatory, Kaysville, Utah, United States

Data source: Backyard


Shown in HA-OII, LRGB but OII added almost Nothing.

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 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. The California Nebula was discovered by E. E. Barnard in 1884.

A coincidence is that the California Nebula transits in the zenith in central California as the latitude matches the declination of the object.



Randal Healey
License: None (All rights reserved)

Sky plot

Sky plot


NGC 1499 The California Nebula HAOIIRGB, 


            Randal Healey