README web version of /home/usg/OPS/MTS/readme_xml/readme_76075702

Principal Investigator Email Address

• feldt@mpia-hd.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 4.0

General Description

• MIDI investigation of several massive young stellar objects.
  
  The objects are very faint in the optical, so guiding and tip/tilt correction
  on the science targets themselved is not possible.
  Since the regions mostly suffer from strong extinction, also the stars in the
  further vicinity of the science targets remain faint.
  
  With the AT's we aim for quite specific baseline length / projected position
  angle combinations to complement our MIDI observations already performed with 
  the UT's. This is more or less reflected in the siderial time constraints.
  
  We hope for the following orientations for the 32m baseline:
  
  
  Orion BN     : 2 visibility points around 56 deg and 74 deg, respectively
  
  MonR2IRS3 SW : 2 visibility points around 55 deg and 74 deg, respectively
  
  For MonR2 IRS3 SW, two objects might appear in the FOV (see second finding chart).
   We
  intend to obtain visibilities for the much stronger SW component. (The NE component
   is
  too weak for AT observations.)

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• none

Time-Critical Aspects

• none

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• Due to the presently quite high correlated flux limits for the ATs, we
   included OBs 
  for the strong calibrator HD48915 (to be used together with OrionBN and Mon R2 IRS3
   SW).
  However, this object has a quite large angular distance from the science objects
   and no experience seems to exist about its viability as MIDI calibrators. O.k.,
   try this calibrators (SIRIUS!).
  Nevertheless, we let the original choice of calibrators (HD50778) remain in the
   OB package. 
  For this calibrator we had good experience at the UTs. Perhaps it can be checked
   some
  time despite its N band flux being smaller than 50 Jy ...

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 ?

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

• 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 ?

• N/A