YALO Nightly Observing Report for 1999 Aug 19

Observer: David Gonzalez
Observed all night from 23:06 to 8:34 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 2.0 arcsec, Cirrus, Winds High
   End: Seeing 1.8 arcsec, Clear, Winds High

Observing Summary:

No observations in U band for bad seeing. Anyway, Charles, if you need sky flats , try to send the programme before 4:00 pm as CCD and IR calibration take too long. The rest of the programme was accomplished acconrdingly with much difficulty because of the strong winds mentioned below.
Differential magnitude of Aql X-1:
R= 1.985
V= 0.83

David



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Submitted by David Gonzalez on 1999 Aug 20 [15:58:53]