SUNSET: 
0
Photographer:
Jon Greif
Location of Photo:
Alpine, CA, USA
Date/Time of photo:
August 14-15, 2024, between 10 pm and 4 am PDT
Equipment:
6.5 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, processed with Pixinsight on an M1 MacBook Pro.
Description:
NGC 7635, also known as the Bubble Nebula is a Hydrogen II gas emission nebula, approximately 8000 light years away in the constellation Cassiopeia. It lies close to the open cluster Messier 52 seen on the lower left side of this image. The "bubble," which has a diameter of approximately 8 light years, is created by stellar wind from a massive hot young central star. It is near a giant molecular cloud which contains the expansion of the bubble while itself being excited by the hot central star, causing it to glow. The bubble nebula was discovered in November 1787 by William Herschel.
