README web version of /home/usg/OPS/MTS/readme_xml/readme_81007200

Principal Investigator Email Address

• srix@ing.iac.es

Estimated Total Execution Time (hours, including overheads)

• 12h00m06s

General Description

• - The purpose of these observations is to obtain K-band medium resolution
   ISAAC spectra for a sample of 13 SDSS quasars that host proximate damped Lyman alpha
   absorption systems. 
  
  - Our aim is to measure accurate systemic redshifts for each quasar from the observed
   wavelengths of several rest-frame optical emission lines (specifically H beta, [OIII]
   4960 and [OIII] 5008). (Note that current redshift estimates for these quasars are
   based upon the rest-frame UV emission lines, which are affected by velocity shifts
   of up to a few thousand km/s.)
  
  - Each quasar has a single OB.
  
  - We have estimated the K magnitude of each quasar based upon its R magnitude and
   its (R-K) colour. Using this information we have used three different acquisition
   scenarios:
  
   1. For the brighter quasars, direct target acquisition should be possible. In addition,
   we have selected a sky PA such that another object will fall on the slit.
  
  2. For fainter quasars, acquisition should be performed on the reference star. Subsequently
   our requested telescope offset should be applied. The sky PA has been selected so
   that the reference star will still fall on the slit. The telescope offsets have
   been selected so that either:
  (i) The target is at the centre of the slit.
  OR
  (ii) The target and the reference star are equidistant from the centre of the slit.
  
  Note that the "Target Coordinates" correspond to the object that we have selected
   for acquisition (in some cases the target and in other cases the reference star).

Waiver Requests

• The following waiver request was submitted and accepted:
  081.A-0072A.01.WAV
  
  This permits the submission of OBs longer than 1 hour.

Critical Observing Condition Constraints

• N/A

Time-Critical Aspects

• N/A

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• NIGHT TIME CALIBRATIONS
  
  The three highest redshift targets in our sample have rest-frame optical emission
   lines that fall at wavelengths greater than 2.2 microns. Therefore the wavelength
   calibration for these three targets could be compromised by the lack of OH lines
   at these wavelengths. As the scientific goal of this programme is to determine an
   accurate redshift for each quasar, we have inserted night time calibration templates
   (arcs and flats) for these particular targets.

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• ---(Empty)---

Source(s) of Pre-imaging

• ---(Empty)---

Pre-imaging sources not listed above

• ---(Empty)---

Do all your OBs comply with the instrument-specific requirements listed
 on the instrument-specific Phase 2 web page ?

• YES

If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
 Category for each Observing Template ?

• N/A

Do all your finding charts comply with both the general and instrument-specific
 Phase 2 Web Pages ?

• YES

If you submitted OBs for standard stars, did you specify the magnitude
 and spectral type of all standard stars in the OBs ?

• N/A

Have you included OBs for any calibrations that you need but which are
 not part of the Calibration Plan ?

• N/A

If you are observing Moving Targets, have you attached suitable ephemeris
 files to your OBs?

• N/A

If you have preferences which OBs should be executed first, did you make
 use of the User Priority field in the OBs ?

• N/A

If this is a run that requires coordinated observations with other facilities,
 did you give proper instructions in the Time-Critical Aspects Section ?

• N/A

If you submitted OBs for standard stars, did you use the provided StandardStar
 templates ?

• N/A

If you are using a specific offset pattern or position angle, did you
 check carefully the definition in the manual ?

• YES

If you are doing spectroscopy, did you draw the slit on the Finding Charts
 ?

• YES

Did you enter the magnitude of the brightest star in the field-of-view
 in the 'Instrument Comments' field of each OB ?

• YES

If you use the MoveToPixel acquisition, have you given clear instructions
 on the FC and in the OB comment section as to how the field should be centered ?

• YES