![]() ![]() Proplyds are photoevaporating protoplanetary disks found around very young stars. ![]() The proplyd had a bent protostellar jet and a possible ionization front facing 42 Orionis. Observations with the Hubble Space Telescope in 2012 revealed a candidate proplyd (ionized protoplanetary disk) in the nebula NGC 1977. Processing CCDStack, Photoshop CC, PixInsight. Exposure: RGB = 7 : 7 : 7 Hours Acquisition Astronomer Control Panel (ACP), Maxim DL/CCD (Cyanogen), FlatMan XL (Alnitak). Optics: 32-inch Schulman Telescope (RCOS). The Running Man Nebula, credit: Adam Block/Mount Lemmon Sk圜enter/University of Arizona. NGC 1973 and NGC 1975 were discovered by German astronomer Heinrich Louis d’Arrest, director of the Østervold Observatory at the University in Copenhagen, in 18. Herschel catalogued the object as “H V 30” with a note “42 Orionis and neb.” It was discovered by the German-born British astronomer William Herschel in 1786. NGC 1977 is the brightest and largest nebula in Sh2-279. The designation is sometimes used for the whole nebula complex. The Running Man Nebula is commonly associated with the New General Catalogue designation NGC 1977, which refers to the reflection nebulosity around the star 42 Orionis (c Orionis) in the southeastern part of Sh2-279. The star-forming region Sh2-279 consists of the reflection nebulae NGC 1973, NGC 1975, and NGC 1977, and the open cluster NGC 1981. Image credit: Stephan Hamel (CC BY-SA 4.0) Sharpless 279 Composite of narrowband (SII + Ha =OIII) and RGB with a 80mm telescope. Orion Nebula and the Running Man Nebula with surrounding nebulosity. ![]()
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