RCW 120 (also catologued as Shapless 3, Sh-3, or Gum 58) is an emission nebula and H II region in the southern Milky Way and located some 4,300 light-years from Earth. Its designation appears in the RCW Catalogue published in 1960, whose circular diameter size is 6 arcmin. Veta S. Avedisova considers RCW 120 is being ionised by the O8 V star CD -38 11636 and the B2 V star VDBH 84B, and places the nebula in the star formation region SFR 348.26+0.47 along with 3 masers and the radio HII region CH87 347.386+0.266. The Herschel infra-red telescope’s image shows an embryonic star that is likely to become one of the brightest stars in our Galaxy at some time within the next few hundred thousand years. The star now appears about ten times more massive than the Sun and may grow much larger by accreting material from the surrounding gas and dust.

Telescope: Planewave CDK17 (FR) f4.5
Mount: Astro Physics 1600GTO
Camera: QHY16200A/ Integral FW
Guider: Agena Starguide II / SBIG STi

H-alpha: 27×10 mins = 270 mins

Total Imaging Time: 4h 30m

Data Imaged remotely over 3 nights during April 2021.
Imaged from Observatorio El Sauce, Chile, in partnership with Fred Espenak.
Data acquisition & Processing by David Churchill.

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