README web version of /home/usg/OPS/MTS/readme_xml/readme_80085500

Principal Investigator Email Address

• hsana@eso.org

Estimated Total Execution Time (hours, including overheads)

• 16.2h

General Description

• This is in principle a straightforward program, but its schedulling will
   be challenging. 
  
  SCIENCE : monitoring of ALL O-type stars in IC2944 to derive orbital and physical
   parameters of the known binaries and to probe presumably single stars for long period
   variations. This will yield constraints on the formation and early dynamical evolution
   of O stars.
  
  CRITICAL ASPECTS : 
  
  * a SNR above 200 at 660nm should be reached. Exposure times were computed so that
   the request SNR -10% will be obtained even under THN+seeing=2arcsec+airmass=2 (according
   to the ETC). This is the strict minimal value for the spectrum to be usefull.
  
  * a spread of the observations over the 4 months of visibility according to the
   specified TIME-CRITICAL aspects

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• * If the program is executed under better conditions (CLR-seeing=1.0),
   please choose the fainter targets in the following order: CPD-62d2198, HD308828,
   HD308813

Time-Critical Aspects

• * HD 101205 : 15 OBs spread over the period. Minimal separation 4h. Possible
   execution of up to two OBs on a given night.
  
  * HD 101190 : 10 OBs spread over the period. Minimal separation : 1 day
  
  * HD 100099 : 10 OBs spread over the period. Minimal separation : 2 day
  
  * HD 101191, HD101413, HD101436, HD308813 : 5 OBs spread over the period. Minimal
   separation : 10 days
  
  * CPD-62d2198, HD 101123, HD101298, HD 101333, HD101545A, HD101545B: 2 OBs spread
   over the period. Minimal separation : 2months
  
  * HD308804: one snapshot, anytime.
  
  I propose to set up a webpage at http://www.sc.eso.org/~hsana/service/080.D-0855.htm
  To follow-up and optimize the scheduling of the observations in real time.

Special Execution Requirements

• * For HD101545: A and B components are separated by a few arcsec (easily
   visible on the FEROS SV CCD). No finding chart with the 2 components available AND
   the astrometry is not know accurately. THUS the coordinates of both components are
   the same in the OB.
  I made a sketch on a DSS image showing roughly the relative position (A component
   to the North of the B component). Please 
   double check when doing the 1st acquisition. Send me the acquisition image in case
   of problem identifying the 2 components.

Special Calibration Information

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ToO Information

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ToO Activators List

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Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

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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 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 ?

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

• N/A