NGC3199, the Smile Nebula in narrowband

NGC3199 is an unusual emission nebula created by the Wolf-Rayet star HD89358, described in one paper as an "interstellar snow plough" that has created a distorted bubble by moving through a uniform interstellar medium.

 

Data captured from Brisbane, Australia between 25 April and 15 May, 2014

 

Scope: Ceravolo C300 @ f/9 = 2760mm FL, Atlas focuser

Mount: AP900

Camera: U16M

Filters: Astrodon E series Gen 2 LRGB, 3nm HA, OIII, SII

Guiding: Lodestar / MMOAG

Image scale: 0.67 arcsec/pixel

Exposures: 19x1200s Ha, 14x1200s OIII, 16x1200s SII (16.3 hours)

Processing: PixInsight 1.8

Done