NGC 7635: Bubble Nebula in Cassiopeia


Bubble Nebula

Object Data

Object type: Emission Nebula
Size: 7 light years across
Magnitude: 10th
Constellation: Cassiopeia
Distance: 10,000 light years
Notes: Formed by stellar winds  (4 million miles/hr) from a massive star sweeping the cold interstellar gas in front, forming the outer edge of a bubble.  As the surface of the bubble's shell expands it slams into dense regions of cold gas on one side creating an asymmetry.

Exposure Data

Date: 7/30 - 8/1/21
Location: Backyard Observatory, Carlsbad, CA
Telescope: TEC 140mm refractor; 980mm fl @ f/7
Camera: QSI 683 wsg-8 with Astronomik 6nm narrowband filters
Mount: Losmandy G-11, Gemini I
Exposure time: Ha:11 x 15 min, OIII: 8 x 15 min, SII: 7 x 15 min
Exposure time total: 6.5 hrs
Color mapped using the Hubble palette.
FOV = 41.4 x 51.5 arcmin

  Click here to view cropped close-up


Back to 2021 List