Caldwell 11 • NGC 7635 - Bubble Nebula
Caldwell 11, better known as the Bubble Nebula, is a spectacular emission nebula formed by the powerful stellar wind of a massive O‑type star. Its characteristic bubble structure makes this object particularly photogenic.
This photo also shows: top left M52, top right Sh2‑158, and bottom right Sh2‑157.
Object Data
Caldwell:Caldwell 11
Object:NGC 7635
Type:Emission nebula
Constellation:Cassiopeia
Distance:~7,100 light-years
Observation Data
Location:Pollux Observatory, Zuidlaren
Date:2022-09-01
Technical Data
Exposure time:S- 10x 180 sec
Hα- 9 x 180 sec
O- 10 x 180 sec
Total: 1.5 h
Hα- 9 x 180 sec
O- 10 x 180 sec
Total: 1.5 h
Telescope:Takahashi FSQ106 ED
Camera:ZWO ASI 1600mm Pro
Color palette:SOH
Filters:Astronomik 6 nm