README web version of /home/usg/OPS/MTS/readme_xml/readme_75053200
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
This is a simple programme to observe SEVEN Wolf-Rayet WN8 stars. We are
trying to detect over abundances of Rare-Earth Elements in order to test the hypothesis
that Wolf-Rayet WN8 stars are the theoretically postulated Thorn-Zytkow Objects.
For each target 1 to 12 one hour OBs have been prepared in order to achieve total
exposure times ranging from 1 to 12 hours, depending on the magnitude of the target,
which ranges from 6th to 11th magnitude.
WR16, WR24, WR40 & WR123 are Priority-1 targets, while the remaining 3 are Priority-2.
However it is more important to get complete data sets for some of the targets than
to get some data for all of the targets. Therefore if there is a choice to be made,
choose the target with the fewest remaining unexecuted OBs. Apart from that, the
OBs can be executed at any time consistent with the constraints.
There is only one OB for WR24, which is not a WN8 but is included as a control.
It is critical to the science of the project that this OB is completed. It is also
important that the resulting spectra be of good quality, and therefore for this
OB the constraints are slightly more restrictive.
Waiver Requests
Critical Observing Condition Constraints
Time-Critical Aspects
Special Execution Requirements
Please note the following priorities for which targets to observe, all
other things being equal:
WR24 :: OB WN8-TZO WR24
WR16 :: OBs WN8-TZO WR16-[1-4]
WR40 :: OBs WN8-TZO WR40-[1-6]
WR123 :: OBs WN8-TZO WR123-[1-5]
WR12 :: OBs WN8-TZO WR12-[1-10]
WR66 :: OBs WN8-TZO WR66-[1-12]
WR89 :: OBs WN8-TZO WR89-[1-12]
When choosing to execute an OB for this programme please also bear in mind that
for the achievement of the SCIENCE GOALS it is better to have complete data sets
for some targets rather than some data for all targets, therefore, all other things
being equal please choose the target with the fewest remaining unexecuted OBs.
Special Calibration Information
ToO Information
ToO Activators List
Is this a Pre-imaging run ?
Pre-imaging Requirements
Source(s) of Pre-imaging
Pre-imaging sources not listed above
Do all your OBs comply with the instrument-specific requirements listed
on the instrument-specific Phase 2 web page ?
If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
Category for each Observing Template ?
Do all your finding charts comply with both the general and instrument-specific
Phase 2 Web Pages ?
If you submitted OBs for standard stars, did you specify the magnitude
and spectral type of all standard stars in the OBs ?
Have you included OBs for any calibrations that you need but which are
not part of the Calibration Plan ?
If you are observing Moving Targets, have you attached suitable ephemeris
files to your OBs?
If you have preferences which OBs should be executed first, did you make
use of the User Priority field in the OBs ?
If this is a run that requires coordinated observations with other facilities,
did you give proper instructions in the Time-Critical Aspects Section ?
Did you set 'New Preset' flag in all acquisition templates to 'True'?
If you use any lamp, did you check that it should never be left on at
the end of any OB?
Last creation of page: Tue Oct 6 15:40:07 2009
If you have comments, please contact usd-help@eso.org