VdB 136 in Cygnus

  Size: 1800 px      
© Velimir Popov & Emil Ivanov 2011 - 2017

VdB 136 is a reflection nebula in the constellation of the Swan. It is situated in the central-northern part of the constellation, just over 2 ° to the SSW of the brilliant star Deneb. The nebula surrounds the star HD 196819, a red giant of spectral class K2.5IIb having apparent magnitude 7.55. Its distance, measured by a parallax value of 1.30 mas, would be equal to 770 parsecs ( 2510 light years). Given this distance, the star with its nebulosity is found within the complex nebulae of the fissure, a short distance from the North America Nebula. In the same direction, but at a distance of over 1500 parsecs, we find DR 21, one of the nebulous systems associated with the great star-forming region Cygnus X.

Image details:


Center of field RA 20:38:08 (h:m:s)
Center of field DE +42:07:02 (deg:m:s)
Size 1.55 x 1.15 (deg)
Pixel scale: 1.03 (arcsec/pixel)
Orientation: Up is 91.9 degrees E of N
Charts and image details obtained from Astrometry.net
Optic(s): ASA 12" Astrograph @ f/3.6 (Newton)
Mount: ASA DDM85 Standard
Camera: SBIG STL 11000 M
Filters: Luminance, Red, Green, Blue, Astronomik filters
Dates/Times: 21, 22 Jul 2012
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: L:18x10min., R:8x10 min, G:8x10 min, B:8x10 min, Bin 1, Total Exposure Time - 420 min (7h).
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013 - 2017. All Rights Reserved
e-mail: info@irida-observatory.org
click tracking