Faint Planetary Nebula in Centaurus

Constellation: Centaurus
Ra: 14h 32m 05s
Dec: -61d 38m 42s
Image Size: 20' x 20'
North: Up; East left



G314.5-01.0 (usual name – PHR1432-6138) is a member of the MASH (Macquarie/AAO/Strasbourg/H-a) Planetary Galactic Catalog of 905 true, likely or possible planetary nebula (PN) compiled from the AAO/UKST H-a survey of the southern galactic plane. It was a 7-year program to identify and spectrally confirm PN candidates. G314.5-01.0 is indicated as a true PN. I could not find a reference for its distance. It is incredibly faint and better suited to meter-class systems, but as usual, astrophotographers have potentially unlimited time on their systems, so in this case, I was able to collect over 23 hours of data this month, including 12 hours of 3 nm OIII and 9.5 hours of H-a + N[II] (5 nm) using 30-minute guided exposures on the 0.5 m reflector. H-a was color-mapped to red/magenta and OIII to blue/green to simulate “natural” color. Short RGB data were added for star color. The object is about 4.5′ in diameter. The H-a shows an array of small tendrils. A close-up cropped version is shown below.

Exposure: 23.25 hrs Total: 12hrs OIII, 9.5hrs H-a, 1.75hrs RGB
Telescope: PlaneWave CDK20, 0.5 m f/6.8 0.54 arcsec/pix
Mount: PlaneWave Ascension 200h
Oag: Astrodon MonsterMOAG
Acquisition: ACP-Expert
Calibration: CCDStack2
Observatory Site: iTelescope, Siding Spring, NSW, Australia
Camera: SBIG STX 16803
Filters: Astrodon 5nm H-a, 3nm OIII, Gen 2 RGB
Guider: Starlight Xpress Lodestar
Camera Operation: Maxim 5.24
Processing: Photoshop CC 2020
Image Date: 04/17/2020 - 04/24/2020


  1. Josep Drudis

    Amazing image, Don, great processing of this nearly unknown and very faint nebula. Another first! Congrats

  2. Sakib

    This looks really nice! It feels great to see the first ever colour image of an unphotographed planetary nebula!


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