NCG7635 - Bubble Nebula - 20181106

 

 

 

NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star, SAO 20575 (BD+60°2522). The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel.

The image was taken November 6, 2018 at Copper Breaks State Park near Quanah, Texas.  The imaging camera was a Starlight Express SXVR-M25C through an Astro-Tech AT6RC mounted on a Celestron CI-700 mount and tripod.  The image was guided using PHD2, a Meade DSI Pro camera through a 80mm F7 scope. The images is 60 minutes (6x10 minutes) pre processed with Nebulosity 2.4.  Final processing was done using Photoshop 5.5.  This is the first image I have posted with the new to me Starlight Express camera.  The camera temperature was adjusted for -10C.