VdB 133 - reflection nebula in Cygnus

  Size: 2000 px      
© Velimir Popov & Emil Ivanov 2016

Centerd on the reflection nebula VdB 133, this image covers 1.92 x 1.29 deg area about 3° southwest from Sadr (γ Cyg). VdB 133 receives and reflects the light of the star 44 Cygni, a yellow supergiant of spectral class F5Iab with apparent magnitude 6.17. Its distance, measured by the parallax, is about 485 parsecs (1583 light-years), which means that it's close to the great nebulous system of the Swan's Fissure. Other objects are also visible here (see mouseover). The most prominent of them is the reflection nebula surrounding the star 42 Cygni. Strangely, it is not catalogued nor from Sidney van der Berg in his VdB catalogue, nor in any other catalogue - fact difficult to explain, taking into account its relatively high brightness.

Image details:


Center of field RA 20:31:03 (h:m:s)
Center of field DE +36:56:21 (deg:m:s)
Size 1.92 x 1.29 (deg)
Pixel scale: 2.99 (arcsec/pixel)
Orientation: Up is 105 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: 1, 2 Nov. 2016
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: L: 8x10, R:6x10 min, G:6x10 min, B:6x10 min, Bin 1, Total Exposure Time - 260 min. (4:20 h)
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013 - 2016. All Rights Reserved
e-mail: info@irida-observatory.org
click tracking