YALO Nightly Observing Report for 1999 Oct 3 Observer: David Gonzalez Observed all night from 23:32 to 9:30 UTC. Conditions were Non-Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Beg: Seeing 1.8 arcsec, Cirrus, Winds High Mid: Seeing 2.2 arcsec, Cirrus, Winds High End: Seeing 2.0 arcsec, Cirrus, Winds High Observing Summary: Differential magnitude of Aql X-1: R=2.07 V=0.86 No problems save for high winds that made observations a hard task. Again, the unstable sky conditions did not allow me to do the photometric porgramme, even though I had prepared sky flats for it. David ------------------------------ Submitted by David Gonzalez on 1999 Oct 4 [5:39:20]