YALO Nightly Observing Report for 2000 Feb 28

Observer: Juan Espinoza
Observed all night from 0015 to 0950 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 1.4 arcsec, Clear, Winds Calm

Observing Summary:


Hello -- Program completed with some modifications such as an interrupted
waiting period on some of VANDK targets because they were too far
at an airmass and not visible due to dome obstruction.  I observed
XTE1550 instead.

We believe that we could have found the problem with the double image
problem:  Apparently is not a loose mirror in it's cell but some
type of dirt or obstruction in the flywheel on RA.  I have gather detailed
information for locating the exact position where it needs to be looked at
by the mechanics, here at the mountain.

I will leave it to David to keep you up to date on this matter.

I had a couple of crashes and recovered as usual -- Some unfinished Scripts
on XTE1550 and A0620.

Averything else is peachy
I will email ya's next week
cheers

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Submitted by Juan Espinoza on 2000 Feb 29 [4:46:07]