README web version of /home/usg/OPS/MTS/readme_xml/readme_60905310

Principal Investigator Email Address

• skraus@mpifr-bonn.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 2

General Description

• The aim of this programme is to measure the origin of the Brackett gamma-line
   emission (2.1662 micron) in YSOs using AMBER's high-resolution mode (HR-2.172).
  Please adjust the DIT according to the FINITO performance - our main aim is to measure
   differential observables.
  
  We suggest to start the observing sequence with SCI_TTAU and to try to find fringes
   on this star.
  If FINITO works sufficiently well to record HR-interferograms on TTauN, then we
   suggest to follow the sequence:
  1a.) SCI_TTAU
  2a.) CAL_HD27429_TTAU
  3a.) SCI_HD50138
  4a.) CAL_HD52938_HD50138
  
  If within 15min FINITO does not work sufficiently well on SCI_TTAU, then we recommend
   to interrupt this target and follow this sequence:
  1b.) SCI_HD50138
  2b.) CAL_HD52938_HD50138
  3b.) SCI_MWC147
  4b.) CAL_HD46735_MWC147
  
  The characteristics of our calibrator stars are as follows:
  HD27429: H=5.2, K=5.2, F3, UD=0.39mas (CalVin), calibrator for TTAU
  HD28930: H=3.8, K=3.7, G8, UD=0.91mas (CalVin), bright alternative calibrator for
   TTAU
  HD52938: H=4.1, K=3.9, K3, UD=0.87mas (CalVin), calibrator for HD50138
  HD51054: H=3.8, K=3.7, K2, UD=0.91mas (CalVin), alternative calibrator for HD50138
  HD50277: H=5.2, K=5.1, F0, UD=0.37mas (ASPRO),  calibrator for MWC147
  HD45415: H=3.3, K=3.2, G9, UD=1.06mas (CalVin), bright alternative calibrator for
   MWC147
  
  Besides the standard calibrators, we prepared for each object also OBs for some
   alternative calibrators.  
  These alternative calibrators are significantly brighter than the science target,
   and can therefore also be observed in case the atmospheric conditions decrease between
   the science target observation and the calibrator.
  
  TTAU is a close multiple system.  Please center the AMBER fiber on the brightest
   (northern) component (see also attached finding chart).
  
  In case a filler object might be needed at the beginning of the night (LST<=21:28),
   we prepared also OBs for the very bright Herbig Be star MWC297 (K=3.0, H=4.4) and
   an associated calibrator.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• None.

Time-Critical Aspects

• Please execute the OBs within the given LST constraints.

Special Execution Requirements

• None

Special Calibration Information

• None

ToO Information

• None

ToO Activators List

• None

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• None

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 ?

• 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 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 ?

• N/A