YALO Telescope Observer's Report for 2001 Feb 20

Observer: David Gonzalez
Observed all night from 00:04 to 08:50 UTC.
Conditions were Photometric most of the night.
Problems were encountered, see the summary for details.

Seeing and Weather:
   Beg: Seeing 1.4 arcsec, Clear, Winds Calm
   Mid: Seeing 1.4 arcsec, Clear, Winds Calm
   End: Seeing 1.2 arcsec, Clear, Winds Calm

Observing Summary:

Hello,

Programme fully accomplished save for 1999DE9 (see comments below).

Differential magnitude of:
A0620   0.37
Cen X-4 0.11
XTE1550 3.57
4u1543  1.35

Rui, the above mentioned object was not observed as there was not a single guide star in the vecinity. The requested exposure time was 1200s. Let me know if an unguided images with that exptime is ok for you.

Charles or Kathy, there are some elongated images for 72099C as the exposure was done unguided.

Also, as described in the trouble report, the crash of IC led to a mistake in teh initialization of Prospero, thus the corrupted Logs. Unfortunately we realized about it rather late.

That's it,

David

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Submitted by David Gonzalez on 2001 Feb 21 [4:09:36]