Hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  Eskimo Nebula  ·  Eskimo nebula  ·  NGC 2392  ·  NGC2392  ·  PGC1637323  ·  PK197+17.1
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NGC 2392 Eskimo Nebula - RGB, 


            Jerry Macon
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NGC 2392 Eskimo Nebula - RGB

Imaging telescopes or lenses: PlaneWave Instruments CDK14

Imaging cameras: ZWO ASI6200MM-PRO

Mounts: Paramount MEII with Absolute Encoders

Guiding telescopes or lenses: PlaneWave Instruments CDK14

Guiding cameras: Starlight Xpress Lodestar X2 Mono

Software: Nighttime Imaging ‘N’ Astronomy N.I.N.A.  ·  PixInsight 1.8  ·  StarNet++ .

Filters: Antlia RGB 50mm

Dates:Jan. 6, 2021

Frames:Antlia RGB 50mm: 457x10" (gain: 100.00) -15C bin 1x1

Integration: 1.3 hours

Avg. Moon age: 22.24 days

Avg. Moon phase: 48.98%

Bortle Dark-Sky Scale: 3.00

Temperature: -5.00

Astrometry.net job: 4191578

RA center: 7h 29' 10"

DEC center: +20° 54' 45"

Pixel scale: 0.302 arcsec/pixel

Orientation: -89.905 degrees

Field radius: 0.210 degrees

Resolution: 4000x3000

Locations: Dark Star Observatory, Taos, New Mexico, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility


NGC 2392 is a very unusual planetary nebula with an intricate and detailed internal structure. All contained within a very small perfectly round sphere, 0.7 arc minutes across, and incredibly bright. My 10 second images of RGB are even much brighter than needed. Several thousand 1 second or less exposures will yield a very detailed image. I will try that one day.

(from Wikipedia)
The Eskimo Nebula (NGC 2392), also known as the Clown-faced Nebula, Lion Nebula, or Caldwell 39, is a bipolar double-shell planetary nebula (PN). It was discovered by astronomer William Herschel in 1787. The formation resembles a person's head surrounded by a parka hood. It is surrounded by gas that composed the outer layers of a Sun-like star. The visible inner filaments are ejected by a strong wind of particles from the central star. The outer disk contains unusual, light-year-long filaments.

NGC 2392 lies about 6500 light-years away, and is visible with a small telescope in the constellation of Gemini.
The nebula was discovered by William Herschel on January 17, 1787, in Slough, England. He described it as "A star 9th magnitude with a pretty bright middle, nebulosity equally dispersed all around. A very remarkable phenomenon. NGC 2392 WH IV-45 is included in the Astronomical League's Herschel 400 observing program.


Sky plot

Sky plot


NGC 2392 Eskimo Nebula - RGB, 


            Jerry Macon