Whirlpool Galaxy (M51)

This image was captured on a night with superb transparency. Unfortunately, heat radiated away so rapidly after sunset (when temperature was about +8 C) that at 9 PM my equipment was hit by a hard frost. I battled condensation on my objectives for the rest of night, only managing to capture 6 more useful frames before midnight, when my batteries died from running a small hair dryer. Two more frames would have improved this image quite a bit.

This was acquired using the modified Canon 50D, so is red-enhanced. I'm working on acquiring more frames with both cameras to produce a combined image.

Moose Creek, Ontario (yellow LP zone); March 9, 2010, 11:00 PM - 12:30 AM; T=-2 C, seeing superb but condensation on objective lens. 120mmED at f/7.5, with Hutech modified Canon 50D; Hutech LPS filter; autoguided. ISO 1000, 4x10 minutes.

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