Hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  California Nebula  ·  NGC 1499
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NGC 1499 California Nebula Ha Mosaic, 


            Gebhard Maurer
NGC 1499 California Nebula Ha Mosaic
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NGC 1499 California Nebula Ha Mosaic

Technical card

Imaging telescopes or lenses: Skywatcher Esprit 120ED Super APO Triplet

Imaging cameras: ZWO ASI ASI1600MM Pro

Mounts: Skywatcher AZ-EQ6 Pro

Guiding telescopes or lenses: Artesky 60mm Ultraguide

Guiding cameras: ZWO ASI 120mm Mini Mono

Software: Open PHD Guiding Project PHD2 2.6.5  ·  Nighttime Imaging 'N' Astronomy  ·  PixInsight PixInsinght 1.8

Filters: ZWO 36mm 7nm Ha

Dates:Oct. 29, 2020Nov. 6, 2020

Frames:ZWO 36mm 7nm Ha: 26x600" (gain: 139.00) -20C bin 1x1

Integration: 4.3 hours

Darks: ~50

Flats: ~30

Bias: ~50

Avg. Moon age: 16.50 days

Avg. Moon phase: 83.40%

Bortle Dark-Sky Scale: 4.00

Mean FWHM: 1.50

Temperature: 10.00

Basic astrometry details

Astrometry.net job: 4000996

RA center: 4h 1' 15"

DEC center: +36° 29' 6"

Pixel scale: 0.911 arcsec/pixel

Orientation: 359.378 degrees

Field radius: 0.996 degrees

Resolution: 6696x4140

Locations: Backyard, Raglitz, Niederösterreich, Austria

Data source: Backyard


This is my first light with my new Skywatcher Esprit 120ED and also my first two panel mosaic :)

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 Hα filter (isolates the Hα line at 656 nm) or 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 center below it in the inset at right). The California Nebula was discovered by E. E. Barnard in 1884.



  • Final
    NGC 1499 California Nebula Ha Mosaic, 


            Gebhard Maurer
  • NGC 1499 California Nebula Ha Mosaic, 


            Gebhard Maurer


Description: Colored Starless Version

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Sky plot

Sky plot


NGC 1499 California Nebula Ha Mosaic, 


            Gebhard Maurer

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