Hemisphere:  Northern  ·  Contains:  PK193-09.1
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H 3-75, 


            Peter Goodhew
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H 3-75

Imaging telescopes or lenses: APM Telescopes TMB - LZOS Apo refractor 152/1200

Imaging cameras: QSI 6120wsg-8

Mounts: 10Micron GM2000HPS II

Guiding cameras: Starlight Xpress Lodestar Autoguider X2

Filters: Astrodon Red  ·  Astrodon Green  ·  Astrodon Lum  ·  Astrodon Blue  ·  Astrodon OIII 3 nm  ·  Astrodon 5nm H-Alpha filter

Astrodon 5nm H-Alpha filter: 63x900" bin 1x1
Astrodon Blue: 9x300" bin 1x1
Astrodon Green: 9x300" bin 1x1
Astrodon Lum: 17x300" bin 1x1
Astrodon OIII 3 nm: 53x900" bin 1x1
Astrodon OIII 3 nm: 17x900" bin 4x4
Astrodon Red: 9x300" bin 1x1

Integration: 36.9 hours

Astrometry.net job: 4048845

RA center: 5h 40' 44"

DEC center: +12° 21' 23"

Pixel scale: 0.267 arcsec/pixel

Orientation: -3.715 degrees

Field radius: 0.156 degrees

Resolution: 3555x2253

Locations: e-Eye, Fregenal de la Sierra, Extramadura, Spain

Data source: Own remote observatory

Remote source: e-EyE Extremadura


H 3-75 (also known as Haro 6-75 and PNG 193.6-09.5) is a tiny planetary nebula in the constellation Orion. At 31 arc seconds this is without a doubt the tiniest target I have ever attempted, and a real challenge for 6-inch aperture scopes.
The outer halo around this planetary nebula was discovered by the Galactic Planetary Nebula Halo Survey (GPNHS) team (a collaboration of some of the world's best astrophotographers led by Sakib Rasool) in January 2019.



Peter Goodhew
License: None (All rights reserved)


  • H 3-75, 


            Peter Goodhew
  • Final
    H 3-75, 


            Peter Goodhew

Sky plot

Sky plot


H 3-75, 


            Peter Goodhew