README web version of /home/usg/OPS/MTS/readme_xml/readme_76035002

Principal Investigator Email Address

• kohnaka@mpifr-bonn.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 15

General Description

• MIDI/AT observations of 5 Mira variables with 3 different baseline configurations
   at three
  epochs.  At each epoch, visibilities should be measured at 3 different hour angles
   to probe
  possible presence of asymmetries.  The goal of the proposal is to study the physical
   properties of the outer atmosphere (H2O and SiO gas layers) and the dust shell,
   and their temporal
  variations.
  
  In the OBs for Sirius and Procyon (CAL_sirius-1/2/3 and CAL_procyon-1/2/3), no finding
   charts
  are attached, because these objects are so bright that the 5 x 5 min areas around
   them appear totally saturated, rendering the finding charts useless.

Waiver Requests

• Waiver request for a minimum elevation of 30 degrees in order to expand
   the observability of  the targets was submitted on 05 Sep. 2005 and approved on
   09 Sep. 2005.

Critical Observing Condition Constraints

• All observations should be carried out under "thin cirrus, variable" or
   better conditions.

Time-Critical Aspects

• Observations should be carried out in February or March 2006.  The OBs
   with different LST ranges for each target should be carried out as close in time
   as possible.
  However, if the observations cannot be made as requested above, observations at
   later months 
  would still be useful for our scientific goal to study temporal variations.

Special Execution Requirements

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Special Calibration Information

• Name               : HD25025
  Coordinates (J2000): 03:58:01.7664 -13:30:30.655
  V magnitude        : 2.98
  N magnitude        : -1.47
  Spectral type      : M1IIIb
  UD diameter in N   : 8.74 +/- 0.088 mas
  Source of diameter : Cohen et al. 1999, AJ, 117, 1864
  
  Name               : HD82668
  Coordinates (J2000): 09:31:13.3189 -57:02:03.757
  V magnitude        : 3.18
  N magnitude        : -1.03
  Spectral type      : K5III
  UD diameter in N   : 7.13 +/- 0.079 mas
  Source of diameter : Cohen et al. 1999, AJ, 117, 1864

ToO Information

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ToO Activators List

• ---(Empty)---

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

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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 ?

• 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 ?

• 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