Seen: ICOP member Mr. Jim Stamm said:
"Location = Tucson, Arizona (USA)
Longitude = 110.9645 W
Latitude = 32.4204 N
Elevation = 842 meters
Time Zone = -7.0 hours
Surface conditions at Tucson International Airport (805 m):
Temperature = 15 degrees Celsius
Relative Humidity = 25 percent
Topocentric and local time values from “Accurate Times”:
Sunset (at sea level) = 18:07
Moonset (at sea level) = 18:57
Time from new moon at 18:30 = 20 hr. 34 min.
Moon lag time = 50 min.
Relative Altitude = 2.5 degrees
Elongation from sun = 10.3 degrees
Crescent width = 15 arc seconds
Illumination = 0.8 percent
Crescent first observed through 8” SC telescope:
Time = 18:13 (* see note)
Altitude = 6.5 degrees
Crescent first observed through 6x30 finder:
Time = 6:22
Altitude = 4.8 degrees
Final observation with telescope:
Time = 18:42
Altitude = 0.9 degrees
Final observation with binoculars:
Time = 18:42
Altitude = 0.9 degrees
* Crescent would have been seen earlier, but focus was off. Initial arc length was about 90 degrees, growing to about 130 degrees at 18:30, but no lengthening after that time."