README web version of /home/usg/OPS/MTS/readme_xml/readme_83080600

Principal Investigator Email Address

• Eric.Stempels@st-andrews.ac.uk

Estimated Total Execution Time (hours, including overheads)

• 3

General Description

• The aim of this observing program is to determine a highly accurate radial
   velocity curve of the young eclipsing binary TYC-7310-503-1 (P=2.10d). This requires
   observations at high spectral resolution, and with a reasonably uniform coverage
   of all orbital phases.
  
  The timing of the OBs is chosen such that each OB covers a different range of orbital
   phases, The full set of observations will then provide more or less uniform phase
   coverage. Because of this, no more than one observation of this system should be
   taken on a single night. Furthermore, some phases have higher priority (See futher
   under Time-Critical Aspects)
  
  At V=10.8, the system is very bright for VLT/UVES, and can therefore be observed
   in almost any type of weather.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• No important constraints, since the system is so bright (V=10.8) that
   it can be observed in almost any condition.
  
  However, since we want to determine highly accurate radial velocities, we ask the
   support astronomer to be sensible when observing the system on nights where there
   is a full moon and thick cirrus. A large contribution of moonlight in the spectrum
   may compromise the determined radial velocities.

Time-Critical Aspects

• In order to be able to determine a good radial velocity (RV) curve, it
   is important that the full set of observations covers the phase space of the binary
   orbit more or less uniformly. The timing of the different OBs has therefore been
   chosen very carefully, such that each OB covers a particular range of orbital phases.
  
  It is therefore important that no more than one OB of this run is executed in a
   single night.
  
  Furthermore, since the fitted RV curve is particularly sensitive to observations
   obtained near orbital quadrature (when both stars have their largest RVs), it is
   important that the two OBs that cover these quadratures get executed. These OBs
   have 'QUAD' in their name, a relatively small time window, and have been given high
   user priority. If any of these QUAD-OBs are available on a particular night, these
   OBs are *strongly* preferred above any of the other OBs.

Special Execution Requirements

• N/A

Special Calibration Information

• N/A

ToO Information

• N/A

ToO Activators List

• N/A

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

• 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 ?

• YES

Have you specified the S/N ratio at given wavelength in the User Comments
 field of each OB?

• YES

Have you included OBs for any calibrations that you need but which are
 not part of the Calibration Plan ?

• YES

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

If you need secondary guiding, are there suitable objects within 30 arcsec
 from your target ?

• N/A