Andrew’s Astronomy Blog

Our old friend the Bubble Nebula in Cassiopeia again, this time on the society’s 20″ with the ATIK 383L camera.

By the time I was imaging this, it was almost at the zenith with all the issues that brings when using the Alt/Az dobsonian. Can anyone say ‘field rotation’?

This image is a stack of 30 second LRGB frames. Luminance are binned 2×2 and the colours 4×4.

This entry was posted on Monday, October 3rd, 2011 at 19:55 and is filed under Nebula, Deep Sky. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.