YALO Telescope Observer's Report for 2001 May 07

Observer: Juan Espinoza
Observed all night from 22:58 to 10:23 UTC.
Conditions were Mixed most of the night.
Problems were encountered, see the summary for details.

Seeing and Weather:
   Beg: Seeing 2.4 arcsec, Clear, Winds Moderate, with some humidity
   Mid: Seeing 2.2 arcsec, Clear, Winds Moderate
   End: Seeing 1.8 arcsec, Cirrus, Winds Moderate, to overcast

Observing Summary:


Program not completed due to various facts such as moderate to strong winds,
several crashes including workstation terminal Kepler going through
and uncalled for reboot at around 07:00 UT, focus problems, bad seeing,
cirrus arriving at around -8:00 UT and almost covering skies at the end
of the night (it was a heck night!)

Portugal target BHC013 not observed in IH bands because it 
was too close to an airmass of 2 plus really bad seeing.


Standars PG0918 and PG1047 were observed with a dither factor
of 30 instead of 20 as, as I imagine, the stand*.obs files were
modified from the last time we made these objects and I used
files that were created during this period (about three or so 
months ago).


Yale magnitudes:

Cen X-4		0.37
4u1543		1.44
xte1550		5.36 (this is a questionable reading for I believe 
		      the object target landed on a bad pixel)



That is all from me for this week.
Best regards
juan
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Submitted by Juan Espinoza on 2001 May 8 [6:39:14]