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H 3-75


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About this observation
Peter Goodhew FRAS
Time of observation
25/11/2020 - 10:44
H 3-75
Observing location
Fregenal de la Sierra, Spain
APM TMB 152 LZOS Refractors
10Micron GM2000 HPS mount
QSI6120wsg8 cameras
37 hours HaOIIILRGB

H 3-75 (also known as Haro 3-75 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. This is the first amateur image to reveal the outer halo, which is significantly larger than 31 arc seconds.
The outer halo around this planetary nebula was initially 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.

More technical details are available on my website at:

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