README web version of /home/usg/OPS/MTS/readme_xml/readme_79012100

Principal Investigator Email Address

• oschuetz@eso.org

Estimated Total Execution Time (hours, including overheads)

• 13.0

General Description

• In this run we intend to spatially resolve circumstellar matter around
  stars  which show  circumstellar silicate  emission (spectroscopically
  detected). We  further submit low-res spectroscopy OBs  for one target
  that  has  not yet  been  studied  spectroscopically.  While the  four
  different spectroscopic  settings can be obtained  at different times,
  the corresponding STD for each setting  must be acquired together with
  the target.
  
  Target brightness in general (from IRAS):
  
    0.9 Jy  <  N  <  7.2 Jy
    1.7 Jy  <  Q  <  5.5 Jy
  
  Guiding:
  
    Guide stars were selected with the guidecam tool. Only for CD-43 344
    there is a potential problem: The selected (only one feasible) guide
    star may  marginally vignet a  corner of the  VISIR detector. Please
    check whether the guide star list available at the telescope contains 
    any alternatives. No problems for all other targets.
  
  Standard star (for spectroscopy):
  
    HD 145897 is from the "selected list of 12 standard stars from Cohen"
    which are  frequently used for VISIR.  We  therefore consider it not
    necessary to submit a finding chart for this well known target.
  
  In case of any eventual problems, please contact the PI.  Thank you.

Waiver Requests

• No Waiver Request was submitted.

Critical Observing Condition Constraints

• For each spectral  setting the STD star needs  to be acquired together
  with the corresponding science OB.  Besides that, this program can be 
  considered a filler.

Time-Critical Aspects

• None.

Special Execution Requirements

• Some info about target acquisition and finding charts:
  
  The  finding charts  (FC)  are a  best  effort, but  for most  targets
  high-resolution  IR imaging has  not been  obtained before.  Note that
  often more than one FC  is attached (with different FOVs and different
  wavelengths).
  
  - HD 123356:  We aim at imaging the component  HD 123356 _B_, which is
    already in the  NIR the  brighter star.  In the  MIR it  will be the
    dominant source of emission.
  
  - HD 143006:  This target  is expected  to be the  only source  in the
    field (see TIMMI2 finding chart).
  
  - V1045 Sco:  Other FC than a 2MASS K-band could not  be found. In the
    MIR the target will be the brightest source in the field.
  
  - HD 190073 and CD-43 344:  Brightest source in the field.
  
  - HD 145897 is from the "selected list of 12 standard stars from Cohen"
    which are  frequently used for VISIR.  We  therefore consider it not
    necessary to submit a finding chart for this well known target.
  
  Beside of  finding charts, we further verified with the  IRAS PSC that
  our  targets are  always the  brightest  12-micron source  in  a field
  sufficiently larger (10') than the VISIR FOV.
  
  In case of any eventual problems, please contact the PI.  Thank you.

Special Calibration Information

• Photometric standard stars are needed from the observatory calibration
  plan and should be observed in the same filters as the imaging exposures.
  
  We provide a spectroscopic standard star. These OBs should be executed 
  immediately before or after the science spectra.

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 ?

• 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

If the provided finding chart is at a different wavelength than the observations,
 did you clearly describe in the README file how to identify the target?

• YES

Did you specify a guide star brighter than V=12mag within a field of
 r=5arcmin around the science target?

• YES