VdB 113, Sh2-34 a.o. - nebulae in Sagittarius

  Size: 1800 px      
© Velimir Popov & Emil Ivanov 2017

VdB 113 is a reflection nebula visible in the constellation of Sagittarius. It surrounds and is illuminated by the 6.42 magnitude star HD 165784 (or B-21 4866) The spectral class of the star is A2/A3Iab. Its parallax indicates a distance of about 926 parsec (3 020 light years). Some other nebulae can be spotted on this image (see the annotated mouseover). Among them is Sh2-34. This large diffuse HII region, also called LBN 38, is near the Sgr OB1 association and the Lagoon nebula.

Image details:


Center of field RA 18:08:39 (h:m:s)
Center of field DE -21:26:37 (deg:m:s)
Size 1.96 x 1.31 (deg)
Pixel scale: 2.99 (arcsec/pixel)
Orientation: Up is 255 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: 3, 4. May. 2017
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: L:6x10min., R:6x10 min, G:6x10 min, B:6x10 min, Bin 2, Total Exposure Time - 210 min (3h 30min).
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
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