README web version of /home/usg/OPS/MTS/readme_xml/readme_80076501
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
This program aims at the direct detection of exo-planets around nearby
young stars using the spectral deconvolution technique. SINFONI is the only instrument
currently capable of carrying out such a search. The program requires a mosaic of
4 pointings for each star, so as to increase the Field of View in the smallest pixel
scale to a reasonable value.
With observations of bright targets at the finest pixel scale, the observations
are completely photon noise limited. Thus, there is no need for any sky measurements.
The most critical part is to center the target precisely in the smallest pixel scale
(to an accuracy of 1 or 2 pixels) at the end of the acquisition process. Otherwise
the object peak might well be outside the FoV in some exposures.
The program is fairly straightforward to execute. All that is required is very good
seeing. Please optimise the AO system to provide the highest Strehl possible, as
the very best Strehl is crucial to the success of this program.
Two of the targets use the acquisition template NGSfast, owing to their brightness.
For these targets, it is essential to use CLR or PHO observing conditions
Waiver Requests
A Waiver Request was submitted to allow SINFONI_ifs_acq_NGSfast to be
used on two of the four targets for which acquisition in the coarsest pixel scale
might lead to some persistence effects on the detector. The Waiver request has ID
080.C-0765B.01. As of 21:30 hrs on 02.08.07, this Waiver request is still pending.
Not knowing the outcome of the waiver request, I have put in SINFONI_ifs_acq_NGSfast
for the two targets that require it (although with H=5.99 and H=5.8 they only marginally
require it. Depending on the outcome of the waiver request, I am happy to modify
the affected OBs, if required.
The Waiver request has subsequently been granted, and the 8 OBs affected have been
modified to include telescope guide star co-ordinates, all using the 2MASS catalog
co-ordinate system.
Critical Observing Condition Constraints
Time-Critical Aspects
Special Execution Requirements
Please try to complete all OBs for one target first before proceeding
to the next. I have prioritised the OBs as per science priority, but realise that
one of the higher priority targets is up later in the semester, so it is practical
to do the others first instead.
Two of the targets use the acquisition template NGSfast, owing to their brightness.
For these templates, it is essential to use CLR or PHO observing conditions.
Special Calibration Information
Please make sure that a telluric is observed at the same pixel scale as
the science observations. The spectral resolution of SINFONI changes with spaxel
scale (as does the instrumental profile as a function of lambda), and if some planetary
candidate is found, the telluric is critical to obtain a good spectrum.
Please also take many dark / flat exposures. For these very high SNR observations,
the number of darks / flats can often limit the SNR of the science result. I have
stuck to the standard DIT times to make this easier.
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 indicate the magnitude of the brightest object in the field in
each SINFONI OB?
If you are using the AO: Did you indicate for every OB the magnitude
of the guide star, and its distance to the target (if any)?
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?
Did you make really sure that none of your OBs ever saturates the detector?
If you are using the AO: did you enter the correct Strehl Ratio (on-axis,
K-band) AND the seeing value in the constraint set?
Last creation of page: Tue Oct 6 15:40:22 2009
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