Not totally clear – supposed to be “mostly clear” until about midnight, then clear. Some lines of cirrus were visible across the sky near sunset and the entire western sky was “milky” white at sunset, so transparency not great. Winds around 5mph or less, temps in the low 70s, fairly low humidity, decent to typical seeing (~2 arcsecs).
Rig #2: V1101 Aquila
V1101 is definitely fainter tonight (not just because of the thin cirrus). Running 60-second exposures.
9:40pm – definitely lots of cirrus across the sky. Variable transparency made obvious by brighter background in some images
Well, it stayed mostly clear until about 12:50am – then lots of high cirrus. Done at 1:00am. Here’s the plot for the night – pretty ratty!