README web version of /home/usg/OPS/MTS/readme_xml/readme_79035001

Principal Investigator Email Address

• nardetto@mpifr-bonn.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 6.0

General Description

• These 4 OBs (science + calibration stars) correspond to 4 pulsation phases
   of the Cepheid l Car: 0.00, 0.38, 0.78 and 0.89 (P=35.55days). The time requested
   is 4*1.5h=6h.In high resolution mode and using differential interferometry we focuse
   on the [2.1610,2.1760] wavelength range (in micrometer) including the following
   unblended spectral lines : SiI 2.1613, the Hydrogen Brackett gamma line 2.1655,
   SiI 2.1674, SiI 2.1698 and FeI 2.1735.

Waiver Requests

• Observations corresponding to the proposal started in Apr 2007 (P79) but
   were not completed.
  The proposal was then accepted for a carryover in P80.
  Instead of using UT1-UT3-UT4 without FINITO (as required in P79), we decided to
   use A0-K0-G1 with FINITO (provided in P80).
  This configuration modification was also accepted.
  Thus, one measurement has already been done with UTs in April 2007, 
  and three new measurements are expected in P80 using ATs/FINITO (see Time-Critical
   Aspects)

Critical Observing Condition Constraints

• The K band magnitude of the observed stars (lcar and hd78004) are resp.
   1.1 and 1.3. 
  Following the "P2PP AMBER information", the seeing constraints we request for all
   observations is 1 arsec. The sky should be clear. 
  These contraints are identical to the one indicated in the initial phase 1 proposal.

Time-Critical Aspects

• We want to observe lcar at 4 different pulsation phases: 0.00, 0.38, 0.78,
   and 0.89. Given the ephemeris (To=2452290.4158 and P=35.551341) and taking into
   account the observability of lcar during period P81, it corresponds to specific
   dates : 
  -phase=0.00 (corresponding to OBs named phase1) : Apr 07/08/09, May 13/14/15, Jun
   16/17/18 (first halfs)
  -phase=0.38 (corresponding to OBs named phase2) : Apr 19/20/21/22/23/24/25/26, May
   25/26/27/28/29/30/31 (first halfs)
  -phase=0.78 (corresponding to OBs named phase4) : already DONE the 11-apr 2007
  -phase=0.89 (corresponding to OBs named phase3) : Apr 04/05/06, May 09/10/11, Jun
   13/14/15 (first halfs)
  Thus, for OBs named 1,2 and 3 we need one measurement (1h30) within one of the time
   interval indicated. 
  
  lcar is observable at the beginning of the night in April, May and June.
  The dates mean the night starting that date.
  Note that OBs have not been updated with these new P81 dates.

Special Execution Requirements

• No special execution requirements.

Special Calibration Information

• Calibration OBs are requested for AMBER/VLTI observations. 
  Using the SearchCal tool, we found the hd78004 star as a good calibrator of lcar
   : 
  name : hd78004
  V mag. : 3.7
  K mag. : 1.28
  Sp. type : K2III
  UD : 2.81+-0.19 mas
  source of diameter estimate : photometry
  
  We have chosen the science star (lcar) as a guide star. In V band the mean magnitude
   of lcar is 3.72 and the expected variability range is from 3.36 to 4.08. The V amplitude
   is 0.72.

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 ?

• 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 ?

• 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 ?

• YES

Did you indicate for each science star OB the corresponding calibrator
 star OB (and vice versa) in the 'Instrument Comments' field ?

• YES

Did you check that your chosen calibrator is bright enough for the instrument
 mode used ?

• YES

If you use calibrator stars which are not in the CalVin database, did
 you specify their characteristics in the README file and in the OBs ?

• YES

Do you use the same DIT for pairs of science target and associated calibrator?

• YES

Are the magnitudes of science target and calibrator within +/- 1 mag
 ?

• YES

Did you verify that your coordinates are as accurate as possible (2Mass
 coordinates recommended) and that they include proper motions if available ?

• YES

Did you specify the LST range of the calibrators such that they cover
 the range from 30 min before the start of the LST range of the science target to
 30 min after the end of the LST range of the science target ?

• YES