README web version of /home/usg/OPS/MTS/readme_xml/readme_79067400

Principal Investigator Email Address

• giampaolo.piotto@unipd.it

Estimated Total Execution Time (hours, including overheads)

• 8

General Description

• By these observations we want to find binary stars among
  the hot horizontal branch of the Globular Cluster
  NGC6752. For this purpose we plan to obtain repeated
  observations of the same stars at different epochs.
  Because of this our observations are time-critical, and the temporal sequence
  for the OBs execution is reported in "Time-Critical Aspect" field.
  The observational constrains we can eccept for our OBs observation
  are reported in "Critical Observing Condition Constrains".

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• We had the proposal approved with the following constrains:
  seeing <= 0.8, grey Moon, clear sky.
  But our program is time-critical (see "Time-Critical Aspect" field), 
  and we can accept a seeing<=1.2, full Moon, and variable sky
  transparency (thin cirrus) if this can help
  to observe out OBs according to the temporal sequence
  reported in "Time-Critical Aspect" field.

Time-Critical Aspects

• These observations cover about 3 months and are divided
  in 6 observing nights, i.e. 6 epochs (including also
  runs 079.D-0674(B) and 079.D-0674(C))
  For each night 2x1hr OBs should be observed.
  Because of this OBs of this run must be executed according to 
  the following temporal sequence:
  
  1) During the first night or epoch (hereafter "reference epoch") the OBs named 
    
     NGC6752_night1_A and NGC6752_night1_B should be observed. These OBs can be 
     find in run 079.D-0674(A).
     The date of this first epoch is arbitrary, but must be chosen according
     to the fact that these observations cover 3 months (see below).
  
  2) NGC6752_night2_A and NGC6752_night2_B OBs should be observed the following night
     with respect the reference epoch. These OBs can be find in run 079.D-0674(A).
  
  3) NGC6752_night3_A and NGC6753_night3_B OBs should be observed three (3) nights
     after the reference epoch. These OBs can be find in run 079.D-0674(A).
  
  4) NGC6752_night4_A and NGC6752_night4_B OBs should be observed five (5) nights
     after the reference epoch. These OBs can be find in run 079.D-0674(A).
  
  5) NGC6752_night5_A and NGC6752_night5_B OBs should be observed about twenty (20)
   nights
     after the reference epoch. These OBs can be find in the run 079.D-0674(B).
  
  6) NGC6752_night6_A and NGC6752_night6_B OBs should be observed about ninety (90)
   nights
     after the reference epoch. These OBs can be find in the run 079.D-0674(C).
  
  
  In any case the sequence of the OBs is also indicated by the "User Priority"
  and the "User Comments" fields specified for each OB.
  
  According to the observability table of NGC 6752, a good choice for
  the reference epoch is the end of May 2007.
  
  We succesfully chacked the OBs for a HA range of +/-4 hr from the beginning of
  May to the end of September 2007.

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

• WFI

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 in your OBs the hour angle range for which your Target
 Setup files are valid ?

• YES

Did you specify in your OBs the magnitudes of FACBs and Guide Star for
 all your fields ?

• YES

Are the FACBs and Guide Star in the brightness ranges specified in the
 FLAMES manual ?

• YES

Did you enter the expected signal to noise in your OBs ?

• YES