README web version of /home/usg/OPS/MTS/readme_xml/readme_83002500
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
This programme consists of a relatively straight forward set of observations
of individual stars inside a star cluster. The general philosophy is that we have
a 'base star' which we will use to acquire an accurate position. We then use the
generic offset option to step to a star in the cluster and begin exposing (spectroscopically).
After a 90s (in the case of the first template a 60s) integration, we again use
a generic offset to another star in the cluster and repeat. All generic offsets
are in the N-S direction, except for a few cases were we offset E-W in order to
obtain a sky exposure. After 6 or 7 generic offsets, we then would like to 'return
to origin' (i.e. return to the base star position) and begin again. This is to
avoid compounding positional errors. All positions have been calibrated off 2MASS
and UKIDSS Kband images.
For the acquisition image, the brightest star in the field (in the K-band) has K=6.5.
We thus use two nearby narrow band filters. Our acquisition star however has K=9.75,
and as the ESO ETC does not have the capability to insert two filters, it is unclear
as to how long the exposure time for the acquisition should be. In order to avoid
saturation on the brightest star, we use the minimum allowed exposure time of 1.77s
and set NDIT=3 in order to build up S/N in the fainter acquisition star. (The acquisition
star is the same in both OBs.)
For each OB, we include 3 finding charts (one for each template), which show the
positions of the science exposures as we step through the clusters (using the generic
offset option). The sky exposures are not shown.
stimated Total Execution Time: 00:58:55.0 (for first OB), 00:59:40.0 (for second
OB)
For the telluric standards, we request that hot stars are observed. We suggest
the two following stars:
Hip093836
19:06:35.11 -1:20:46.00 B5V K=6.629
Hip100977
20:28:24.89 -3:21:27.90 B9V K=6.177
Waiver Requests
Critical Observing Condition Constraints
Time-Critical Aspects
Special Execution Requirements
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 ?
If you submitted OBs for standard stars, did you use the provided StandardStar
templates ?
If you are using a specific offset pattern or position angle, did you
check carefully the definition in the manual ?
If you are doing spectroscopy, did you draw the slit on the Finding Charts
?
Did you enter the magnitude of the brightest star in the field-of-view
in the 'Instrument Comments' field of each OB ?
If you use the MoveToPixel acquisition, have you given clear instructions
on the FC and in the OB comment section as to how the field should be centered ?
Last creation of page: Tue Oct 6 15:40:28 2009
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