Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  B161  ·  B365  ·  IC 1396  ·  IC1396  ·  Sh2-131  ·  VdB142
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Ic 1396 - the Elephants Trunk, 



    
        

            Mario Zauner
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Ic 1396 - the Elephants Trunk

Getting plate-solving status, please wait...
Ic 1396 - the Elephants Trunk, 



    
        

            Mario Zauner
Powered byPixInsight

Ic 1396 - the Elephants Trunk

Technical card

Imaging telescopes or lenses: Skywatcher Esprit 100ED Super APO Triplet

Imaging cameras: ZW Optical ZWO ASI1600MM-Cool

Mounts: Skywatcher AZ EQ-6 GT

Guiding telescopes or lenses: Skywatcher Esprit 100ED Super APO Triplet

Software: Pleiades Astrophoto S.L. PinInsight  ·  Adobe Lighroom CC, photoshop cc

Filters: Optolong H-alpha 12nm  ·  Optolong OIII 12nm  ·  Optolong S-II 12nm

Accessory: Lacerta MGEN Autoguider, V 2.30


Dates:Oct. 22, 2017

Frames: 176x600" (29h 20')

Integration: 29h 20'

Avg. Moon age: 2.53 days

Avg. Moon phase: 7.07%


Astrometry.net job: 1781608

RA center: 21h 36' 14"

DEC center: +57° 34' 23"

Pixel scale: 3.340 arcsec/pixel

Orientation: 88.340 degrees

Field radius: 1.065 degrees


Resolution: 1824x1393

Locations: Heinsternwsrte, Gmunden, Oberösterreich, Austria

Description

Asi1600mmc bei -20°

Ha: 55x300sek und 27x600" (ca 9h)

Oiii: 37x300" und 24x600" (ca 6,25h)

Sii: 9x600" und 24x900" (ca 7,5h)

AZEq6Gt und Esprit100ED, Mgen

The Elephant's Trunk nebula is a concentration of interstellar gas and dust within the much larger ionized gas region IC 1396 located in the constellation Cepheus about 2,400 light years away from Earth.[1] The piece of the nebula shown here is the dark, dense globule IC 1396A; it is commonly called the Elephant's Trunk nebula because of its appearance at visible light wavelengths, where there is a dark patch with a bright, sinuous rim. The bright rim is the surface of the dense cloud that is being illuminated and ionized by a very bright, massive star (HD 206267) that is just to the east of IC 1396A. (In the Spitzer Space Telescope view shown, the massive star is just to the left of the edge of the image.) The entire IC 1396 region is ionized by the massive star, except for dense globules that can protect themselves from the star's harsh ultraviolet rays.

The Elephant's Trunk nebula is now thought to be a site of star formation, containing several very young (less than 100,000 yr) stars that were discovered in infrared images in 2003. Two older (but still young, a couple of million years, by the standards of stars, which live for billions of years) stars are present in a small, circular cavity in the head of the globule. Winds from these young stars may have emptied the cavity.

The combined action of the light from the massive star ionizing and compressing the rim of the cloud, and the wind from the young stars shifting gas from the center outward lead to very high compression in the Elephant's Trunk nebula. This pressure has triggered the current generation of protostars.[2][3]

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Ic 1396 - the Elephants Trunk, 



    
        

            Mario Zauner

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