NGC7635, the Bubble Nebula, Luminance

Well, this is much better than my last image of this nebula. The addition of guiding and a refractor with less light scatter help, and also the use of a filter to exclude some light pollution. I plan to save this image as luminance for color later.

Part of what I like of this image is the detail that can be seen inside the bubble. I didn't expect it.

Imaging Scope: Orion 80ED & WO 0.8x II (f/6)
Imager: Atik 16
Exposure: 36x5'
Filter: Celestron LPR
Capture Software: Nebulosity 2
Mount: Takahashi EM-10
Guiding Camera: DSI Pro
Guiding Software: PHD
Guiding Scope: Hybrid 60mm f/5
Date: Night of 10-23-09
Location: The Woodlands, TX
Processed with Nebulosity 2 & Photoshop Elements 7