YALO Nightly Observing Report for 1999 Aug 8 Observer: David Gonzalez Observed all night from 23:11 to 9:00 UTC. Conditions were Non-Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Beg: Seeing 1.4 arcsec, Cirrus, Winds Calm Mid: Seeing 1.6 arcsec, Cirrus, Winds Calm End: Seeing 1.8 arcsec, Cirrus, Winds Calm Observing Summary: Programme accomplished accordingly. Differential Magnitude of Aql X-1: V=0.47 R=2.17 ps. I could not submit this report earlier since we had internet problems throughout the night. ------------------------------ Submitted by David Gonzalez on 1999 Aug 9 [15:34:16]