README web version of /home/usg/OPS/MTS/readme_xml/readme_84013601
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
Our two science targets are:
- J0058+0041: a QSO with z_em=1.92, an absorption system at z_abs=1.072 with magnitude
of r ~ 17;
- J0841+0312: a QSO with z_em=1.84, an absorption system at z_abs=1.342 with magnitude
r ~ 16.4;
Both exhibit complex metal absorption lines. Our primary goal is to obtain spectra
with high S/N around 420nm, 480nm respectively, to cover the Zn/Cr II lines of interest.
We also require high quality spectra of Mg I lines around 590nm, 670nm respectively,
as Mg I has lines that blend with the Zn/Cr II lines.
J0058+0041 uses the 390+564nm setting; J0841+0312 uses the 437+760nm setting. The
calibrations for the latter are compilcated by the fact the red arm CCDs for the
760nm setting are prone to ThAr remnants. Please see the "Special Calibration Information"
section for details.
If there are any questions related to the OBs or their execution, please contact
the PI, Adrian Malec, as the first contact.
Waiver Requests
Critical Observing Condition Constraints
Time-Critical Aspects
Special Execution Requirements
Special Calibration Information
An attached ThAr wavelength calibration template is included after the
science exposure in each OB. For all J0841_437+760 OBs the 760nm setting is used
for the red arm. The remnants in the 760 setting left by the ThAr exposure mean
that attached 760nm ThAr exposures are not allowed in service mode. We have therefore
defined the exposure time for the red arm calibrations to be zero seconds. The blue
arm calibrations pose no such problems and should still be attached after the science
exposures. The 760nm red CCD calibrations should still be taken as part of the normal
morning calibration procedure.
Note: This does not apply to the J0058_390+564 blocks, where the calibration exposures
should be taken and attached after the science as specified in the OBs.
ToO Information
ToO Activators List
Do all your OBs comply with the instrument-specific requirements listed
on the instrument-specific Phase 2 web page ?
Do all your finding charts comply with both the general and instrument-specific
Phase 2 Web Pages ?
If you submitted OBs for standard stars, did you specify the magnitude
and spectral type of all standard stars in the OBs ?
Have you specified the S/N ratio at given wavelength in the User Comments
field of each OB?
Have you included OBs for any calibrations that you need but which are
not part of the Calibration Plan ?
If you are observing Moving Targets, have you attached suitable ephemeris
files to your OBs?
If you have preferences which OBs should be executed first, did you make
use of the User Priority field in the OBs ?
If this is a run that requires coordinated observations with other facilities,
did you give proper instructions in the Time-Critical Aspects Section ?
If you need secondary guiding, are there suitable objects within 30 arcsec
from your target ?
Last creation of page: Tue Oct 6 15:40:31 2009
If you have comments, please contact usd-help@eso.org