README web version of /home/usg/OPS/MTS/readme_xml/readme_78504100

Principal Investigator Email Address

• sstefl@eso.org

Estimated Total Execution Time (hours, including overheads)

• 3.0

General Description

• The purpose of this DDT programme is to obtain single spectra of four
   sigma Ori E-type candidate stars.  The selected candidates show the X-ray and/or
   gamma-ray flares and relatively strong magnetic fields. In the requested high-dispersion
   Feros spectra, we will search for H I emission, determine anomalies in the He I
   abundances and the rotational broadening of selected spectral lines in order to
   exclude that the flares and the magnetic fields come from the binary systems with
   cool companions and to verify that these  phenomena are connected with strong magnetospheres
   of single B-type stars. Their detailed investigation focused on the origin of magnetic
   fields  will be the subject of the regular follow-up proposal.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• The programme can be executed under average or even slightly worse conditions,
   particularly the two brighter stars (seeing <2, AM<2). The DITs are computes
   for AM=1.6, seeing 1.0". They may need to be modified if the conditions are significantly
   different.

Time-Critical Aspects

• No time critical aspects. The observations of individual stars are independent.
   Because we need to analyze the spectra and prepare the regular proposal before March
   31, we would appreciate if we can get all spectra before the end of February 2007,
   at the latest.

Special Execution Requirements

• The acquisition for some of the targets may be easier in the red or IR
   region. Please, check both visual and IR finding charts attached to the OBs.

Special Calibration Information

• Standard calibrations is sufficient.

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• No pre-imaging.

Source(s) of Pre-imaging

• ---(Empty)---

Pre-imaging sources not listed above

• none

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

• N/A

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 ?

• 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

Did you set 'New Preset' flag in all acquisition templates to 'True'?

• YES

If you use any lamp, did you check that it should never be left on at
 the end of any OB?

• N/A