I really like this 15 arc-minute nebula found in Cassiopeia.  It is difficult due to several bright stars in the field.

12" LX200 at f/6.3 and SBIG ST-8E.

This image is a composite of thirty 30 sec luminance, fifteen 1 minute red, fifteen 1 minute green, and thirty 1 min blue frames.   I used a 10th magnitude guide star south of the bubble with 4 second exposures.  The color frames were binned 2x2.  It was color balanced to 1.15 : 1.00 : 2.05.  Adobe Photoshop was used to remove blooming spikes.

Taken on September 25, 2000 from my backyard in Monmouth Oregon.

Previous best from one year earlier:

This image is the combination of 21 one minute exposures taken with the 12" LX200 and 416XT CCD at f/3.3.  It was taken in my back yard in Monmouth Oregon on Sept 3, 1999.