267C5692B.html


Last update of this page: Thu Apr 24 17:45:02 2003
Last update of the USG file: Jul 17 09:42:07 2002

Major Instrument Modes: FORS1 LSS (MOV)

RA Range: 22:17 - 0:47 - 3:26

Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 2.0 2CLR 5.0 1.0 30


Pre-imaging run? No! Chilean run? No! Special calibrations? No!
Time critical? No! ToO? No! Carry-over run? No!


Special Remarks:


 
 
Fast LSS of a moving solar system target: the OBs have to be updated
with the coordinates, differential tracking rates and position angle
from the ephemeris attached to the README. Spectra of the fragments
of Comet C/2001A2 Linear will be taken at three epochs to monitor the
break-up. For every epoch (mid-June, end of June and mid-July)
there are three OBs: 1: the slit passes through fragments B1 and B2;
2: the slit passes through fragments A and B1; 3: solar analogue star
for calibration. The three OBs for each epoch take roughly 1 hour and
should be executed in the same night (the solar analogue can be done
at twilight).

Each science OBs consists of 4 spectra: 2 short and 1 long on the
object and one on the sky (the offset for this last one will probably
cause the guide star to be lost, but it doesn't matter). The magnitude
of the three targets is uncertain, but probably only the brightest
one will be easily identifiable in the acquisition image.

 
 


Information about the progress of this run:

Run status page 267.C-5692B

README of this run:

267.C-5692B.README