README web version of /home/usg/OPS/MTS/readme_xml/readme_76011501

Principal Investigator Email Address

• francesco.kienzle@obs.unige.ch

Estimated Total Execution Time (hours, including overheads)

• 8.9h

General Description

• The goal is to compare the distance scale of Cepheids and eclipsing binaries
  through the measurement of LMC Cepheids in eclipsing binaries.
  The immediat objective of run B in period 76 is to measure the radial velocity (Vr)
   value of
  the faint binary companion. For that purpose we need a long exposure (2 to 4 houres)
   on the targets
  in order to obtain a low signal/noise (S/N~5) FEROS spectrum of the faint secondary
   component.
  (_see Time-Critical Aspects_ !).

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• The goal is to measure the binary Cepheid Vr value as far
  as possible from the eclipse in order to have the maximum separation between the
  component spectral lines.
  
  Since the maximum exposure time of an OB is one hour, each target has more than
   one OB
  (ending _B1 to B4).
  Note that for a given object all its OBs have to be take during the _same night_
   otherwise
  the short period Cepheid pulsation will blend the spectral lines and the Cepheid
   spectrum 
  will then be useless !

Time-Critical Aspects

• All the OBs corresponding to one object have to be observed during the
  _same_ night !

Special Execution Requirements

• Standard radial velocity standards:
  Cepheids radial velocities are attached to the standard Vr system through standard
  Vr stars. If Cepheids OBs have been scheduled, then _one_ such star must be measured
  during the same night.
  Please, schedule these OBs _only_ if Cepheids will be observed during the same night.

Special Calibration Information

• _NO_ Special calibration OBs have been submitted.
  Note however that all our OBs have a ** 2x2 binning ** of the FEROS CCD,
  therefore the appropriate standard calibrations have to be done.

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• ---(Empty)---

Source(s) of Pre-imaging

• ---(Empty)---

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 ?

• 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 ?

• 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

Did you set 'New Preset' flag in all acquisition templates to 'True'?

• N/A

If you use any lamp, did you check that it should never be left on at
 the end of any OB?

• N/A