(click on the image to get a full resolution image)
10x7.5min Red, Green
The Bubble Nebula is an Ha II emission nebula in the constellation Cassiopeia. It's 11,000 lightyears from earth. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star (SAO 20575).
I still have to improve this image:
- The blue images aren't as well focused as the other channels (and I have less blue data)
- I have only done very little processing (setting background, some basic DDP stretching, HLVG)
... and I can't believe the difference between imaging from our backyard to imaging at a really dark site!