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Comet C/2009 P1 Garradd is seen here near globular cluster M92 in Hercules. The green coma is prominently seen here, with a bluish gas tail to the left and a yellowish dust tail to the right.

Equipment: Vixen 102-ED/TS Optics field flattener/ST-8300C/Paramount ME
F-ratio: f/6.5
Exposure: 20 minutes
Date: February 3, 2012
Location: Landers, California, USA
Technical Notes: Image calibration was performed using DeepSkyStacker. Reduce Noise amd Gaussian Blur were applied to the dim portions of the image. The RGB image was duplicated to create a luminance layer, and then duplicated again and combined using Soft Light to increase color saturation.