SUNSET: 
0
Photographer:
Jon Greif
Location of Photo:
Alpine, CA, USA
Date/Time of photo:
April 8, 2025, from 8 pm to 11:30 pm PDT
Equipment:
TS-Optics 8" f/4 ONTC Newtonian Telescope, 10Micron GM1000HPS Mount, ZWO ASI2600MM Pro camera, ZWO Ha, Oiii, Sii filters, MoonLite focuser, NINA acquisition software and Pixinsight processing software.
Description:
NGC 2392, also known as the Clown Face Nebula (zoom in to see the clown's face), is a bipolar double-shell planetary nebula. [Unrelated to planets, a planetary nebula is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.] NGC 2392 was discovered by astronomer William Herschel in 1787. It lies about 6500 light-years away, and is visible with a small telescope in the constellation of Gemini. This image was taken last night using narrow band filters in the Hydrogen alpha, Oxygen iii and Sulfur ii wave lengths and processed using the Hubble Palette (SHO).
