NGC 1555  -  Hind's Variable Nebula

70%  resolution (3.0MB)

Object identification (3.0MB)

DSLR widefield image

Object data of NGC1555

Object type: Herbig-Haro object
Size: 0.5'
Magnitude: -
Constellation: Tau
Distance: 400 Ly
Notes: 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–Haro object.

Herbig–Haro (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

Exposure data

Date: 2017-11-15 + 17 + 19 + 20
Location: ATHOS Centro Astronomico / La Palma (900m)
Telescope: Astro-Physics 175mm f/8 Starfire EDF with field flattener (f=1452mm)
Camera: Moravian G4-16000 with Baader filters
Binning: L 1x1 / RGB 1x1
Mount: 10micron GM3000 HPS
Exposure time: L 32x6min / R 10x6min / G 10x6min / B 10x6min
Exposure time total: 6h 12min

Image acquisition by CEDIC team (Bernhard Hubl, Christoph Kaltseis, Markus Blauensteiner)

Image processing by Bernhard Hubl