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NGC 1555 - Hind’s Variable Nebula in Taurus

Astrophotography from Ursa Major Observatory @ ROSA

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Herbig-Haro Object
0.5’
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Tau
2017-11-15+17+19+20
Astro-Physics 175mm f/8 Starfire EDF with field flattener (f=1452mm)
10micron GM3000 HPS
L 32x6 min, RGB 10x6 min each
6h 12min
Camera:
Moravian G4-16000 with Baader filters
Image acquisition by CEDIC team (Bernhard Hubl, Christoph Kaltseis, Markus Blauensteiner) Image processing by Bernhard Hubl
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400 Ly
NGC 1555, also known as Hind's Variable Nebula, is a variable nebula, illuminated by the young star T Tauri, located in the constellation Taurus. It is a Herbig蓬aro object. Herbig蓬aro (HH) objects are small patches of nebulosity associated with newly born stars, and are formed when narrow jets of partially ionized gas ejected by those stars collide with nearby clouds of gas and dust at speeds of several hundred kilometres per second. HH objects are transient phenomena that last less than a few thousand years. They can evolve visibly over quite short astronomical timescales as they move rapidly away from their parent star into the gas clouds of interstellar space. Besides NGC 1555 also six other HH objects are visible in the above image of this dusty region: HH 255 (=Burnham's Nebula) HH 355A HH 355B HH 355D HH 355E HH 355F