M101 on Feb 25
Last evening I met up with some members of the local astronomy clubs in Boulder, Longmont, and Fort Collins, Coloarado at Crow Valley Campground near Briggsdale. It was quite cold, around 3 °F, no wind, clear sky, turbulence 7/10, and fantastic transparency. Unfortunately, I forgot my counterweight, dew shield, and dew heater. Lucky for me Dan was there and let me use his catalytic heater to clear off the corrector plate so I was able to do some imaging. It was pretty frustrating though as the clutches would slip now and then from the unbalanced load.
Compare this to one I took on Jan 29 — excellent transparency makes a difference!