README web version of /home/usg/OPS/MTS/readme_xml/readme_83088000

Principal Investigator Email Address

• m.bremer@bristol.ac.uk

Estimated Total Execution Time (hours, including overheads)

• 15:59

General Description

• Three colour imaging of a 3/4 square degree area centered on a claimed
   supercluster at z=0.5. All images are tagged as pre-images as they are all necessary
   to derive the photometric colour-selected sample of objects to be spectroscopically
   observed in the "B" run. Standard imaging calibrations are required nevertheless
   as we need to photometrically calibrate the data. The idea is to identify four regions
   with clusters at the claimed redshift of the supercluster and verify concordent
   redshifts to confirm the claim of a supercluster. Imaging is in 18 OBs, two 3 by
   3 grids of pointings, one staggered by 2 arminutes in RA & DEC from the other
   to cover most of the chip gaps. Although this gives small unobserved holes covering
   a few percent of the area, this is the most efficient use of the observing time.

Waiver Requests

• 083.A-0880A.01.WAV Approved: Allows V& I imaging to be done as pre-imaging.This
   was done to ensure all bands are delivered quickly so a photometric colour selected
   catalog can be prepped to set up the masks in run B. In addition to the V &
   I bands, the OBs contain R band preimages, which  I will align the masks to (as
   standard).

Critical Observing Condition Constraints

• None

Time-Critical Aspects

• None

Special Execution Requirements

• Standard imaging calibs required for VR&I even though the images are
   tagged as pre-imaging. We need to make a photometric catalogue in order to select
   objexcts for spectroscopy in run B. So bias, flats and standard/zeropoint reqiired
   for each band.
  
  The 9 "a" pointings are tagged as higher priority as the "b" pointings only so that
   all "a" pointings are completed before the "b" ones are begun. That should help
   us make the catalogues for the entire area more quickly as we have a representative
   sample of data more quickly tha if "a" and "b" pointings were observed together.

Special Calibration Information

• Standard imaging calibs required

ToO Information

• N/A

ToO Activators List

• N/A

Is this a Pre-imaging run ?

• true

Pre-imaging Requirements

• All imaging tagged as preimaging, but all needs to be reduced as standard
   photometry, so standard calibs are also required. The two three-by-three pointing
   grids are given different priorities to ensure one is completed before the other
   is started in order to speed creation of the input catalogue for spectroscopy.

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 ?

• YES

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

Did you specify suitable guide stars for all your OBs using Guidecam
 ?

• YES

Did you check that the chosen guide stars are suitable for all the offset
 positions and that they do not produce unacceptable vignetting of the field of view
 ?

• YES