The Bubble Nebula's region
Bubble Nebula
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
Technical Data
| Bortle Scale / SQM-L | Bortle 5 / --- |
| Period | August 2023 |
| Primary Scope | FSQ106/530 |
| Camera | IMX455 |
| Mount | AP 1100 GTO CP4 |
| Exposure Time | 4,5H |
| Composition | LRGB |
| Location | Val Imagna (Bergamo) Italy |
RECORDED IN 2016 (HRGB)
© Efrem Frigeni Astrophoto