NGC7635 HaRGB | David Rosenthal

Photographer
David Rosenthal
Email
david.john.rosenthal@gmail.com
Location of photo
Midland Park, NJ
Date/Time of photo
September 2012
Equipment
Meade LX200R Losmany G11 Gemini SXVR-H18, SX Wheel, SX OAR, SX Guide Camera AstroDon 5nm Ha and AstroDon TrueBalance Gen II E Series RGB Filters
Description
NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a 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.[