fav target
01 / Capture
- Object
- NGC 7635
- Object type
- Nebula
- Captured
- 2026-02-09
02 / Imaging train
- Equipment
- Celestron 11inch Edge HD · Skywatcher EQ6-Pro · ZW0 1600MM · ZWO EFW · SH0 · SHO
- Telescope
- Celestron 11inch Edge HD
- Mount
- Skywatcher EQ6-Pro
- Camera
- ZW0 1600MM
- Filter wheel
- ZWO EFW
- Filters
- SH0
- Filter set
- SHO
- Scope type
- SCT
03 / Processing
- Workflow
- Pixinsght
Image license: This gallery image is published under a Creative Commons license.
Object notes / Wikipedia
Bubble Nebula
The Bubble Nebula, also known as NGC 7635, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia. It lies close to 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 November 1787 by William Herschel. The star BD+60°2522 is thought to have a mass of about 44 M☉.
Text and media excerpted from Wikipedia/Wikimedia under their applicable licenses; see the linked article for full attribution history and license details.