NGC 5189 (Gum 47, IC 4274, nicknamed Spiral Planetary Nebula) is a planetary nebula in the constellation Musca.
The S shape, together with point-symmetric knots in the nebula, have for a long time hinted to astronomers that a binary central star is present. Observations with the Southern African Large Telescope have finally found a white dwarf companion in a 4 day orbit around the rare low-mass Wolf-Rayet type central star of NGC 5189. NGC 5189 is estimated to be approx. 2000 light-years away from Earth.
Find more information and a Hubble image of this nebula here.
Image Data (2013-2016):
SII-Ha-OIII-RGB (SII 8x20min ,Ha 13x20min, OIII 4x20min, RGB each 80 min), Seeing 0.7-1.2 arc-sec,
80cm f/7 Astrooptik Keller cassegrain, FLI Proline 16803, Baader + Astrodon Filters, Prompt 7 CTIO Chile,
Acquisition: Philipp Keller, Konstantin Buchhold, Johannes Schedler
Processing: Johannes Schedler
Find a H-OIII-OIII RGB image in natural color below in 62/150% size
Find a SII-Ha-OIII RGB image in NB Hubble palette below in 62/150% size