VdB 30 in Camelopardalis

  Size: 2000 px      
© Velimir Popov & Emil Ivanov 2016
VdB 30 is a reflection nebula, visible in the constellation Camelopardalis. It is a very extensive gas cloud, but is hardly observable due to the low amount of light reflected and its relatively low temperature. It appears to surround the star α Camelopardalis (in the centre of the image), a blue supergiant from apparent magnitude 4.26 and spectral class O9Ia. The cloud extends for about 29 parsecs and is composed of cold dust, which emit infrared radiation due to the weak heating received from the supergiant, whose emissions, because of its surface temperature equal to 30,000 Kelvin, are especially ultraviolet. The nebula has a ring shape, impressed by the strong stellar wind of the supergiant, which is also responsible for creating a bubble in the interstellar medium surrounding, thus dispersing the cloud itself. The distance is estimated to be more than 6900 light-years.



Image details:


Center of field RA 04:54:10 (h:m:s)
Center of field DE +66:19:29 (deg:m:s)
Size 1.87 x 1.28 (deg)
Pixel scale: 2.99 (arcsec/pixel)
Orientation: Up is -75.3 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, 8 nm Ha Baader filter
Dates/Times: 21 Nov. 2016
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: L: 7x10, Ha:6x15min, R:7x10 min, G:7x10 min, B:7x10 min, Bin 1, Total Exposure Time - 370 min. (6:10 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
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