README web version of /home/usg/OPS/MTS/readme_xml/readme_77071300

Principal Investigator Email Address

• riechers@mpia.de

Estimated Total Execution Time (hours, including overheads)

• 17.0

General Description

• This is a P77 Service Mode program which aims at observing very faint,
   narrow transmission spikes in the absorbing Gunn-Peterson troughs below the Lyman
   alpha and beta lines of a z=6 SDSS quasar. It is a continuation of a P75 Visitor
   Mode program, and 2 waiver requests have been approved in order to assure that these
   P77 observations use the same settings that have been used in P75. 
  
  This program consists of 10 identical science OBs plus 1 OB to observe a flux calibrator
   with our non-standard setups. The red arm of UVES is used with the standard 860nm
   setup and a 1 arcsec slit. The target position is determined by blind offset from
   a reference star given in the finding charts during the acquisition phase.

Waiver Requests

• Waiver Request to override 1 hour OB limitation has been approved on Jan
   25, 2006.
  
  Waiver Request to override standard CCD readout modes has been approved on Feb 03,
   2006.

Critical Observing Condition Constraints

• None.

Time-Critical Aspects

• None.

Special Execution Requirements

• We are aware of the fact that, if the conditions degrade in violation
   of the constraints after the first hour, the OB will not be repeated.
  
  However, since we are dealing with a single integration per OB, the quality of the
   spectrum might suffer if the conditions get too bad (say, seeing >1.5''). 
  
  Therefore, we ask the operator to make the decision to read out the spectrum at
   the point where conditions worsen *significantly*, even when the full 90min integration
   is not completed and it means that we loose the rest of the time.

Special Calibration Information

• N/A

ToO Information

• N/A

ToO Activators List

• N/A

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• None.

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 ?

• YES

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 need secondary guiding, are there suitable objects within 30 arcsec
 from your target ?

• N/A