The Bubble Nebula | Tal Akerman

The Bubble Nebula | Tal Akerman
The Bubble Nebula | Tal Akerman

NGC 7635, also known as the Bubble NebulaSharpless 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. It was discovered in 1787 by William Herschel.

Imaging telescopes or lenses: GSO RC 8" Carbon Tube
Imaging cameras: ZWO ASI1600MM Pro
Mounts: iOptron CEM70
Guiding cameras: ZWO ASI174MM mini
Focal reducers: Astro Physics CCDT67 CCDT67
Software: PHD2 PHD 2 · N.I.N.A. Nighttime Imaging 'N' Astronomy · PixInsight
Filters: Chroma Blue · Astrodon SII 3nm · Astrodon OIII 3nm · Astrodon Ha 3nm · Chroma Green · Chroma Red

Astrodon Ha 3nm - 80x900s (20 hours)
Astrodon Oiii 3nm - 60x900s (15 hours)
Astrodon Sii 3nm - 60x900s (15 hours)
Chroma Red - 60x60s
Chroma Green - 60x60s
Chroma Blue - 60x60s