Gum 51 - emission nebula in Norma

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© Velimir Popov & Emil Ivanov 2014
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Gum 51 (Also catalogud as RCW 105) is an emission nebula in constellation Norma. The nebula is surrounded by numerous small molecular clouds and is likely embedded in the compact OB association R105. An estimated distance for the R105 association is about 1580 parsecs and its age is 12.8 million years.


Image details:


Center of field RA 16:10:12(h:m:s)
Center of field DE -48:59:55 (deg:m:s)
Size 56.7 x 42.7 (arcmin)
Pixel scale: 1.03 (arcsec/pixel)
Orientation: Up is -4.51 degrees E of N
Charts and image details obtained from
Optic(s): ASA 12" f 3,6 Astrograph (ASA)
Mount: ASA DDM85
Camera: FLI MicroLine 8300 CCD camera
Filters: Luminance, Red, Green, Blue, Astrodon filters
Dates/Times: 30 August 2014
Location: Namibia-TIVOLI ASTROFARM, S 23° 27' 40,9" / E 18° 01' 02,2"
Exp. Details: L:6x10min,R:6x10min, G:6x10min, B:6x10min,Ha::7x15min, Bin1,
  Total Exposure Time - 335 min
More details: Dark and flat frames reduction,
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2014. All Rights Reserved
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