redshift astro
astrophotography blog / brian hitney

NGC7635 - The Bubble Nebula


The Bubble Nebula, NGC7635 and Sh2-162, is an emission nebula in Cassiopeia. It’s near the cluster M52 (I’m working on a wide-field image now that has both the Bubble and M52). The bubble itself (about 10 light years across) is formed and pushed out by a massive star in the middle of the bubble – its stellar wind irradiating the gas and causing it to glow.

The image is a combination of 30 360s exposures with a Canon T4i (modified to allow Ha light) and Edge 11” SCT at f/10. Taken from a dark site in southeastern Utah.

Resolution ........ 0.317 arcsec/pix
Rotation .......... 80.736 deg
Focal ............. 2926.53 mm
Pixel size ........ 4.50 um
Field of view ..... 27' 15.0" x 17' 32.0"
Image center ...... RA: 23 20 32.383  Dec: +61 11 12.85