README web version of /home/usg/OPS/MTS/readme_xml/readme_82083100

Principal Investigator Email Address

• mvandena@eso.org

Estimated Total Execution Time (hours, including overheads)

• 24.3 hours

General Description

• High-resolution optical spectroscopy of bright (V = 7-13) Herbig Ae/Be
   stars.  Goal of this program is to get for each target an optical spectrum of sufficient
   quality (R ~ 50,000, S/N ~ 100 or higher) to allow accurate spectral classification
   of the photospheric absorption-line spectrum and for each star to quantify the accretion
   rate and other circumstellar disk parameters through the emission lines.  Most targets
   are point-like.  In some cases extended emission is present.  In these cases please
   center the slit on the brightest peak.
  
  All stars are expected to have bright emission lines.  Especially Halpha (at 6562
   Angstrom) can be very bright (up to 20 times continuum), and will saturate in some
   targets.  This is fine and no reason to adjust the exposure times.
  
  Exposure times have been set, so that our S/N target can be reached under poor observing
   conditions (THN transparancy and 2.0" seeing).  If however, our targets are observed
   under significantly better conditions (seeing < 1.0" and CLR or better transparency),
   the continuum in our targets may saturate.  Exposure times may be reduced to avoid
   saturation if our OBs are executed under such conditions.

Waiver Requests

• No Waiver Request was submitted.

Critical Observing Condition Constraints

• None; this programme can be executed under almost any conditions.

Time-Critical Aspects

• None.

Special Execution Requirements

• None.

Special Calibration Information

• None.

ToO Information

• N/A.

ToO Activators List

• N/A.

Do all your OBs comply with the instrument-specific requirements listed
 on the instrument-specific Phase 2 web page ?

• 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 specified the S/N ratio at given wavelength in the User Comments
 field of each OB?

• 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

If you need secondary guiding, are there suitable objects within 30 arcsec
 from your target ?

• N/A