- Exposure: 60 sec. @ f/4.0
- Lens: Pentax 67 300mm F/4.0 EDIF
- Camera: FLI PL-16803
- Filter: Astrodon 6nm H-alpha
- Location: Pendleton, Oregon
- Date: 30-Oct-2007 @ 2245 PDT
- Calibration: Maxim DL
- Processing: PixInsight Standard and Photoshop CS3
- Notes: Ten 60-sec. exposures were sigma combined in Maxim DL to produce this wide-field view of Comet Holmes (17P) in outburst.
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