README web version of /home/usg/OPS/MTS/readme_xml/readme_79020700

Principal Investigator Email Address

• verhoeff@science.uva.nl

Estimated Total Execution Time (hours, including overheads)

• 7.5 hours

General Description

• Dust evolution in Herbig Be stars.  We intend to determine the disk minerology,
   structure and evolution of Herbig Be stars. Most of these massive stars are still
   shrouded in their natal clouds and other nebulosity. This is why the high spatial
   resolution spectroscopic data of VISIR is vital in order to diffentiate the minerology
   of the disks from that of their surroundings as observed in the bigger beam of ISO
   and Spitzer. Subsequently we will compare the disk structure and evolution to those
   of the lower mass Herbig Ae and T Tauri stars for which comprensive studies have
   been completed.  
  
  *)Target Identification 
  All finding charts are K-band 2MASS images and thus at a diffent wavelength. Most
   targets will be straight forward, because we expect them to be the brightest point
   source in the FOV. Some targets will contain nebulosity or even fragmented cores.
   For the imaging please place the brightest nucleus in the center of the chip.  
  
  *)Proper motion 
  The proper motion of all targets is less than 0.05"/yr and no ephemeris files are
   needed.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• None

Time-Critical Aspects

• None

Special Execution Requirements

• *)Execution requirements
  We selected 30" parallel chop-nodding to clearly discern the environment of the
   objects. Note to the telescope operator: Please observe a guide star that remains
   in the field with this chop-nod sequence.

Special Calibration Information

• No special calibration required

ToO Information

• N/A

ToO Activators List

• N/A

Is this a Pre-imaging run ?

• true

Pre-imaging Requirements

• *)Pre-imaging requirements 
  All targets of this run are pre-imaging. Based on results of this run we will determine
   the desired slit position and orientation for the subsequent spectroscopic run.
    
  Good luck...

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 ?

• YES

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

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?

• N/A