README web version of /home/usg/OPS/MTS/readme_xml/readme_80011000

Principal Investigator Email Address

• miley@strw.leidenuniv.nl

Estimated Total Execution Time (hours, including overheads)

• 9 x 59m57s = 8 hours 59 minutes 33 seconds

General Description

• This run targets galaxies in the field of a z=3.1 protocluster using FORS2
   multi-object spectroscopy with masks (FORS2 MXU mode). The galaxies were selected
   to have a high probability to be at a redshift of the protocluster. 
  
  Because of the faintness of the targets, we would like to observe one mask for the
   9 hours of allocated time. This means that the mask used in all of the OBs is the
   same mask. The mask targets 32 candidate high redshift galaxies. In addition, 8
   (bright) stars are placed in the mask (using boxes with sizes 3"x3"-4"x4") to check
   the centering of the mask in the through slit image. 
  
  To prepare the mask, an I band image taken with FORS2 in September 2002 was used.
   
  
  For the image acquisition, 10 reference stars were selected with (Vega) magnitudes
   in the I band in the range 18-21.8. On the finding charts these reference stars
   are marked by a circle. To check the alignment of the mask, 8 stars are placed in
   the mask, most of them (6) will fall on the master (top) CCD. On the finding charts
   these alignment stars can be recognized by the square slit through which they are
   observed.

Waiver Requests

• A change of observing strategy was approved by Dr Magda Arnaboldi (ESO
   USD). We were allowed to change our observing constraints (from bright time to dark
   time), while using only half of the allocated time (9 hours instead of 18 hours).

Critical Observing Condition Constraints

• None

Time-Critical Aspects

• None

Special Execution Requirements

• None

Special Calibration Information

• N/A

ToO Information

• N/A

ToO Activators List

• N/A

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• N/A

Source(s) of Pre-imaging

• FORS2

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 have prepared your finding charts with tools other than FIMS,
 do they comply with the specifications on the FORS1 Phase 2 web page ?

• N/A