SUNSET: 
0
Photographer:
Jon Greif
Location of Photo:
Alpine, CA, USA
Date/Time of photo:
August 12-13, 2024, from 9 pm to 4 am PDT
Equipment:
6 hours integration time in Bortle 4 location. Imaging Scope Takahashi FSQ-85, Imaging Camera: ZWO ASI533MC Pro, Guide Scope ZWO 30 mm mini, Guide Camera ASI 290MM Mini, Mount: Rainbow Astro RST-135, Capture Computer: ASIAir Plus, and, of course, processed with Pixinsight on an M1 MacBook Pro.
Description:
The Sadr Region (also known as IC 1318 or the Gamma Cygni Nebula) is the diffuse emission nebula at the center of Cygnus's cross. Sadr is the white supergiant star at the center of this image. It is Cygnus’ second brightest star (Deneb is the brightest), and lies approximately 1,800 light-years from Earth. The nebulosity (rich hydrogen gas field) surrounding Sadr actually lies considerably further away (5000 light years).
