Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  IC 1396
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Elephant Trunk Nebula SHO, 



    
        

            Greg Edwards
Elephant Trunk Nebula SHO
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Elephant Trunk Nebula SHO

Technical card

Imaging telescopes or lenses: Astro-Physics 130 EDFGT

Imaging cameras: SBIG STT 8300M

Mounts: LOSMANDY G11

Guiding cameras: Starlight Xpress Lodestar x2

Focal reducers: AstroPhysics AP 27TVPH .75 reducer

Filters: Astrodon Red Tru-Balance E-series Gen 2  ·  Astrodon O3 1.25 3nm  ·  Astrodon Blue Tru-Balance E-Series Gen 2  ·  Astrodon Green Tru-Balance E-Series Gen 2  ·  Astrodon Ha 1.25" 3 nm

Accessory: Astrodon MonsterMOAG Off-Axis Guider  ·  PrimaLuceLab Eagle3 Pro PrimaLuceLab Eagle 3


Dates:Aug. 30, 2019

Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 15x300"
Astrodon Green Tru-Balance E-Series Gen 2: 16x300"
Astrodon Red Tru-Balance E-series Gen 2: 15x300"
Astronomik S2 6nm Astronomik SII 6nm 1.25": 40x1200"
Astrodon Ha 1.25" 3 nm: 40x1200"
Astrodon O3 1.25 3nm: 40x1200"

Integration: 43.8 hours

Avg. Moon age: 0.08 days

Avg. Moon phase: 0.01%


Basic astrometry details

Astrometry.net job: 3097774

RA center: 21h 36' 22"

DEC center: +57° 45' 54"

Pixel scale: 2.960 arcsec/pixel

Orientation: 233.910 degrees

Field radius: 1.014 degrees


Resolution: 1980x1471

Locations: Home, Penn Valley, CA, United States

Data source: Backyard

Description

Elephant trunk nebula in narrowband, using the Hubble HSO palette and RGB imaging for the stars. In this revision the stars were removed using Starnet ++ in PixInsight, then the stars taken in RGB were added back in. I'm still not happy with the star saturation, but am still learning.

As described in Kanipe and Webb's "Annals of the Deep Sky", The Elephant Trunk Nebula is a part of the open star cluster IC 1396 in the constellation Cepheus. The IC 1396 complex is very large, almost 3 degrees in diameter. The various bright rimmed nebula and globules are areas of star formation. The Elephant Trunk itself is thought to be about 40 light years in length.

Comments

Revisions

  • Final
    Elephant Trunk Nebula SHO, 



    
        

            Greg Edwards
    Original
  • Elephant Trunk Nebula SHO, 



    
        

            Greg Edwards
    B

Sky plot

Sky plot

Histogram

Elephant Trunk Nebula SHO, 



    
        

            Greg Edwards