README web version of /home/usg/OPS/MTS/readme_xml/readme_76084601

Principal Investigator Email Address

• driebe@mpifr-bonn.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 16.0

General Description

• Study of the physical properties and possible asymmetries in the circumstellar
   environment of dusty OH/IR stars using VLTI/MIDI with the ATs in HIGH_SENS mode

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• The visual brightness of the guide star used for guiding the optically
   faint science target IRAS 13371-6249 is close to the limit V=14 mag.
  To the OBs of the calibrator HD128620 no Finding Charts have been attached, since
   they are
  completely saturated due to the large brightness of the star.
  For IRAS 13328-6244 (K-band mag = 8.5) the guide star GSC0899500763 from the ESO
   guide star catalogue has been chosen (K-band mag = 9.6).
  FOR IRAS 13371-6249 (K-band mag = 5.7) the guide star 0269-0461910 from the USNO
   B1.0 guide
  star catalogue has been chosen (K-band mag = 12.1).
  FOR IRAS 11438-6330 (K-band mag = 9.0) the guide star 0262-0243604 from the USNO
   B1.0 guide
  star catalogue has been chosen (K-band mag = 9.9).

Time-Critical Aspects

• None

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• For the calibration observations, two calibrators which are not in the
   CalVin data base
  have been selected to ensure a small angular separation between science targets
   and
  calibrators: HD82668 (RA=09:31:14; DEC=-57:02:03; V=3.2 mag; N=-0.65 mag; angular
   diameter=7.13 mas) for the science targets IRAS 10197-5750 and IRAS 10197-5750,
   and HD128620 (RA=14:39:37; DEC=-60:50:02; V=-0.01 mag; N=-1.85 mag; angular diameter=8.31mas)
   for the science targets IRAS 13328-6244 and IRAS 13371-6249.

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 ?

• 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 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 ?

• YES