README web version of /home/usg/OPS/MTS/readme_xml/readme_78001200

Principal Investigator Email Address

• hsana@eso.org

Estimated Total Execution Time (hours, including overheads)

• 3 hours

General Description

• SCIENCE : Follow-up of two bright (V=7.2-7.9) early type SB2 binaries
   with periods around or over 1yr
  
  IMMEDIATE AIM OF THE PERIOD: minimizing the gap in the time series between P77 and
   P79. 
  
  QUALITY REQUIRED: S/N >=250 . This is a critical aspect of the program.
  
  OBJECT OBSERVABILITY : till end of october, from 1st february till end of the period.
  
  OBSERVING STRATEGY : one spectra of each object should be acquired as follows :
   
  * during october (see note) 
  * before Feb 15th
  * end february/begin of march
  * after March 15th. 
  
  Note : for the october observation, you may relax the constraint on the airmass
   if necessary (i.e. better a point under non-optimal conditions that no point at
   all). Please coordinate with observations performed at the end of P77. The minimum
   separation should be 12 days.
  
  If the previous strategy is not possible (because eg of weather, MPEG time), try
   to spread the observations as much as possible. In any case, it is useless to get
   spectra separated by less than 12 days.

Waiver Requests

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Critical Observing Condition Constraints

• The present sources are reasonably bright, this program can thus be performed
   in about all seeing and cloud coverage conditions as long as a S/N > 250 is reached.
  
  Target can be observed during twilight.
  
  Exposure times were computed for thin cirrus coverage and seeing below 2". If this
   program is adopted as a backup program in the case of bad weather conditions (thick
   cirrus, awful seeing, large airmass) which prevent other observations, please increase
   the exposure time accordingly. Summing up several successive exposures to achieve
   the requested S/N is a valid option.
  In any case, whatever the observing conditions, we will extract useful information
   from our spectra only if the requested S/N > 250 is reached.

Time-Critical Aspects

• Please acquire one spectrum of each target on average once every 2/3 weeks
   during the visibility period of the object.

Special Execution Requirements

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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

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Pre-imaging sources not listed above

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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 ?

• 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

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

• YES

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

• N/A