SUNSET: 
0
Photographer:
Jon Greif
Location of Photo:
Alpine, CA, USA
Date/Time of photo:
August 29 - September 19, 2025, between 7-11 pm PDT
Equipment:
TS-Optics 8" f/4 ONTC Newtonian Telescope, 10Micron GM1000HPS Mount, ZWO ASI2600MM Pro camera, ZWO RGB, Ha filters, MoonLite focuser, NINA acquisition software and Pixinsight processing software.
Description:
The Shark Nebula is a star-forming nebula located approximately 650 light years away in the northern constellation Cepheus (the King). The cloud of interstellar gas and dust appears silhouetted against a rich star field and is part of a larger star-forming region called the Cepheus Flare. It is listed as LDN 1235 in the Lynds Catalogue of Dark Nebulae. The Shark Nebula has a diameter of about 15 light-years. The dust in the nebula emits a faint red photoluminescence as it gets energized by intense ultraviolet light of the young stars in the nebula. Two blue reflection nebula can be seen as well.
