YALO Telescope Observer's Report for 2002 Apr 21

Observer: Juan Espinoza
Observed last half of the night from 04:57 to 10:10 UTC.
Conditions were Mixed most of the night.
Problems were encountered, see the summary for details.

Seeing and Weather:
   Beg: Overcast, Winds Light & Variable
   Mid: Seeing 1.4 arcsec, Cirrus, Winds Moderate
   End: Seeing 2.4 arcsec, Clear, Winds High

Observing Summary:


Hello,

Not a good night.  What little data was possible to obtain it was done
through few clouds, very strong winds.

Because of a crash there is an erronous IR tilt mirror position on frames
ir020421.0048  through ir020421.0073:

	Correct		Erronous

T1	1320		1320
T2	2225		2255
T3	1860		1830


Differential magnitudes:

4u1543:		1.34
xte1550:	6.46
Aql X-1:	3.6

That is all
cheers



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Submitted by Juan Espinoza on 2002 Apr 22 [6:31:30]