README web version of /home/usg/OPS/MTS/readme_xml/readme_78049601
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
This run consists of ARGUS 3D spectroscopy of the brightest ultra-compact
dwarf galaxy (UCD) in the Fornax cluster, using the small scale with 0.3" lenslet.
The UCD (named UCD 3) has V=18 mag. It is marginally resolved from the ground with
good seeing, which is why 3D spectroscopy makes sense. Main aim is to see whether
the velocity dispersion profile rises in the innermost part, as would be expected
in the presence of a very massive central black hole.
The observations should be rather straightforward, it is 5 identical OBs.
In the proposal we had asked for <0.4" seeing. We have now relaxed this requirement
to 0.5" to ensure a significant execution probability, having discussed the issue
with USD. As usual with the seeing requirements, we could accept up to 10% worse
than 0.5", but we really do need the seeing better than 0.6".
Waiver Requests
A waiver for >1h OBs has been approved (078.B-0496B.01.WAV), but is
in the end not necessary.
We are sorry for the extra work this has caused.
Reason is that between the time of asking for the waiver and submission of OBs,
we have changed
our calibration strategy (after having gotten some feedback from the mountain regarding
our calibration plans) such that now we do not submit calibration OBs.
In the balance between gain of S/N and risk of losing image quality, we then opted
for five OBs of 1h duration instead of four OBs with 1:15h. Note that we need 0.5"
seeing or better.
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 ?
Did you specify in your OBs the hour angle range for which your Target
Setup files are valid ?
Did you specify in your OBs the magnitudes of FACBs and Guide Star for
all your fields ?
Are the FACBs and Guide Star in the brightness ranges specified in the
FLAMES manual ?
Did you enter the expected signal to noise in your OBs ?
Last creation of page: Tue Oct 6 15:40:16 2009
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