README web version of /home/usg/OPS/MTS/readme_xml/readme_80046300

Principal Investigator Email Address

• mdoherty@eso.org

Estimated Total Execution Time (hours, including overheads)

• 2.6

General Description

• These are pre-imaging OBs for mask design for a visitor mode run with
   FORS2/MXU on March 11th and 12th 2008. The size of the image corresponds exactly
   to the FORS2 FoV and the aquisition should be centred as best as possible according
   to the patterns of stars shown in this image (note that the central target which
   is a faint high-z radio galaxy will not actually be visible in the acquisition but
   the positions of the central targets are marked with arrows and should be placed
   as close as possible to the centre of the image). Each OB contains two series of
   exposures - one short (30seconds) and one long (240 seconds). This is because nearly
   all the stars will saturate in the long exposures of 240seconds and some unsaturated
   stars will be needed for the mask aquisition. All 4 OBs must be executed for the
   preimaging (2 different jitter patterns per field) as we need sufficient S/N to
   place the slits on the masks on high-redshift faint galaxies, but it doesn't matter
   which order they are observed in. The images will be stacked to produce a deep image
   for locating the faint spectroscopic targets. The finding charts are from DSS but
   should be sufficient as there are plenty of bright stars in both these fields.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• These pre-imaging observations should be taken under the same constraints
   as the proposed spectrosocpy, i.e. dark time and seeing equal or better than 1.0"

Time-Critical Aspects

• This is pre-imaging for a visitor mode run scheduled in March (11th and
   12th), but note these objects will only rise above airmass 1.5 in November (for
   USS0943) and December (PKS1138).

Special Execution Requirements

• none

Special Calibration Information

• none

ToO Information

• N/A

ToO Activators List

• N/A

Is this a Pre-imaging run ?

• true

Pre-imaging Requirements

• This service mode run is pre-imaging for FORS2/MXU spectroscopy which
   will be carried out in March 11th and 12th.

Source(s) of Pre-imaging

• DSS

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 ?

• YES

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 ?

• YES