NGC 1555 (VdB 28, Sh2-238, Hind's Variable Nebula) in Taurus

  Size: 2000 px      
© Velimir Popov & Emil Ivanov 2013-2017
NGC 1555 (also catalogued as Ced 32B, DG 31, Bernes 84, Sh 2-238, Magakian 66, VdB 28), sometimes called Hind's Variable Nebula, is a variable nebula, illuminated by the star T Tauri, prototype of the class of T Tauri variable stars. It is a Herbig–Haro object. The edge of a molecular cloud, the star and the nebula vary significantly in brightness, but not at the same time, which adds some unanswered questions to the astronomers.The surroundings of Hind's nebula are embedded in layers of obscuring dust and gas. The distance to this area is estimated to be 400 light-years. Despite NGC 1555 is often imaged, there are only few images showing wider FOV of this region.

Image details:


Center of field RA 04:21:54 (h:m:s)
Center of field DE +19:32:00 (deg:m:s)
Size 1.66 x 1.1 (deg)
Pixel scale: 2.99 (arcsec/pixel)
Orientation: Up is -92 degrees E of N
Charts and image details obtained from
Optic(s): ASA 12" Astrograph @ f/2.8 (Newton)
Mount: ASA DDM85 Standard
Camera: SBIG STL 11000 M
Filters: Luminance, Red, Green, Blue, Astronomik filters
Dates/Times: 10, 11 and 12 November 2012
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: L:39x10min., R:12x10 min, G:14x10 min, B:13x10 min, Bin 1, Total 780 min (13:00 hrs.)
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013 - 2017. All Rights Reserved
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