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
Dates:Oct. 29, 2020 , Nov. 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
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.
Description: Colored Starless Version
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