README web version of /home/usg/OPS/MTS/readme_xml/readme_73034802

Principal Investigator Email Address

• debreuc@eso.org

Estimated Total Execution Time (hours, including overheads)

• 01:45

General Description

• The goal of this observation is to obtain a 1.5 h spectrum of a radio
  galaxy with a supposed redshift z=3.98. A single spectrum of 2100s
  taken in visitor mode in August 2004 appeared to show an emission line
  at 6051A (pixel x=722 using the 150I grism) and a continuum drop
  across the emission line. This OB consists of two spectra of 45
  minutes, with an offset of 10" (50 pixels) between both
  exposures. Ideally, both exposures should be taken consecutively,
  because this allows the subtraction of the fringing in the red part of
  the CCD. If conditions are not sufficiently stable, the OB can be
  split into two exposures of 45 min each.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

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Time-Critical Aspects

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Special Execution Requirements

• I have provided two I-band finding charts. Both are based on the same
  10s FORS1 acquisition image taken in 2004 August during the visitor
  mode part of this project. The acquisition images in this OB should be
  identical in depth, but will be rotated by 18 degrees North through
  East. The first finding chart (073.A-0348B.001.jpg) shows the entire
  FORS1 field of view, while the second one (073.A-0348B.002.jpg)
  centres on the offset star to be acquired in the slit.
  
  In order to facilitate the acquisition, the OB will orient the slit to
  pass through the offset star (I~18) and the target radio galaxy
  (invisible in the I-band finding chart, but clearly detected in a
  K-band image). The orientation of the slit is 18 degrees North through
  East. The finding chart is a 10s I-band image taken with FORS1,
  i.e. identical to the acquisition image used here (with the exception
  of the 18 degree rotation. Once the offset star has been properly
  centered in the slit, *NO* further blind offset are needed, as the PA
  will take care that our target is properly acquired in the slit.

Special Calibration Information

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ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

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Source(s) of Pre-imaging

• ---(Empty)---

Pre-imaging sources not listed above

• what so ever, it is fast acquisition mode

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

• N/A

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 ?

• N/A

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