69A9005A.html


Last update of this page: Thu Apr 24 17:45:05 2003
Last update of the USG file: Jul 17 09:42:53 2002

Major Instrument Modes: WFI with UBR filters

RA Range: 11.8h - 15.5h

Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 1.4-2.0 3THN 1.3 0-1 40


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


Special Remarks:
NO_REMARKS


 
 

The sky is imaged in survey mode in a search for quasars and lensed
quasars, using single-filter (UBR), 20-offset modules, at starting at
45 target positions.

Critical Observing Conditions!!!:
1.OB's must be executed with survey mode ON.
2.The same pointing mark on the WFI should be kept throughout, because the
   mosaics executed by different TIO's must overlie to within a few arcsec.

Time Critical!!!
1.As coded by the OB constraint section, the choice of R, B, or U is strongly
  dependent on the lunar phase.  Especially the observing blocks marked
  with (***) in README file aim close to where the full moon will pass in
  late April, so any window of opportunity to do them well away from
  25-27 April should be used.
2.Upon execution of one or more color at a target position, the color(s)
  remaining to be observed at the target position should get status MUST
  on the remaining nights. In the end, an imperfectly observed triplet of
  colors (UBR) is more valuable than any perfectly observed subset thereof.
  Thus overriding importance in the final few nights should go to
  COMPLETING (UBR color) TRIPLETS rather than starting new ones.

PI requested for standard calibrations:
preferably at least 21 biases and 7 flats per color.
 
 


Information about the progress of this run:

Run status page 69.A-9005A

README of this run:

69.A-9005A.README