71.D-0396(A)

PI:Kerber/ Asplund/ Clayton/ De Marco/ Pirzkal/ Rosa

71D0396A.html

Last update of this page: Sun May 4 17:45:12 2003
Last update of the USG file: Mar 24 16:39:46 2003

RA Range: 17h52m

Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 0.8 2CLR 1.5 0.7 60.

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

 
 
Pre-imaging for a service-mode FORS2 LSS run (run B) of the rapidly 
evolving Helium shell flash star V4334 Sgr (Sakurai's Object).  Goal of 
this pre-imaging run is to get a recent image of the gas surrounding 
the target that is currently becoming ionized, so the slit can be 
properly positioned during run B.  Runs C and D repeat this experiment 
about two months after run A and B are completed, in order to monitor 
the evolution of the gas.  This run consist of two imaging OBs, both 
on the same target, but with a different set of filters.  The first OB 
(#135094) contains a long exposure in the H_Alpha+83 filter, and short 
exposures in UBVRI.  The second OB (#135095) only contains one short 
and one long exposure in the H_Alpha/2500+60 filter.  For the first 
(multi-filter) OB, the P.I. has been informed that the constraint set 
only applies to the long exposure in the H_Alpha+83 filter.  Apart from 
reasonably good seeing conditions (< 0.8"), the P.I. has also requested 
that this run be completed before June 1st, 2003.

 
 

Run status page 71.D-0396A

README of this run:

71.D-0396A.README