README web version of /home/usg/OPS/MTS/readme_xml/readme_84010600

Principal Investigator Email Address

• pnb@roe.ac.uk

Estimated Total Execution Time (hours, including overheads)

• 23:59:55

General Description

• This is an MOS spectroscopy run. There are 9 pointings, tiling the UKIDSS-UDS
   field. The observations in each pointing are split into either 2 or 3 OBs (_1, _2,
   _3 in the names), summing to a total of approximately 100 minutes on-sky in each
   case. The splitting into 2 and 3 OBs has been done to give a variety of different
   OB executation times to assist in scheduling the project. Longer OBs have been allocated
   higher priority so that these are observed where possible, instead of more easily
   schedulable shorter OBs. The longest OBs go slightly beyond the 1 hour limit, and
   a waiver has been obtained for these.
  
  The primary targets on the masks are objects selected as narrow-band emitters in
   our near-IR narrow-band project. They are thus emission line objects. The aim of
   the project is to confirm the redshifts. Many objects are optically faint: *most
   will not be visible in the through-slit image* but there should be enough detections
   to allow centering. Continuum detections in the spectra may also be weak or absent
   - but the aim is to detect the emission lines and measure the redshift from these.
   A significant fraction of the emitters are expected to have an emission line at
   around 6840Ang, whilst others will have an emission line at around 3930 Ang. Many
   of these emission lines may be weak and only reliably detected when the different
   observations are all combined.
  
  These observations use the LR-Blue grism but do not use an order-sorting filter.
   That is deliberate, in order to give the required wavelength coverage. Since the
   focus is on emission lines, the second-order effects caused by the lack of order-sorting
   filter are not important. A night-time arc observation is included in each OB as
   required for this grism choice. No night-time flats are included: the spectra are
   dithered along the slit to minimise flat-fielding errors.

Waiver Requests

• A waiver request for 084.A-0106(A) was submitted and approved on 14th
   July 2009. It permits OBs up to 
  80 minutes in length for this project.

Critical Observing Condition Constraints

• None

Time-Critical Aspects

• None

Special Execution Requirements

• None

Special Calibration Information

• None

ToO Information

• None

ToO Activators List

• None

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• None

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 ?

• 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