README web version of /home/usg/OPS/MTS/readme_xml/readme_79052400
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
The Arches cluster shall be observed with the SINFONIE IFU in the H+K
grism.
The present-day mass function of the cluster is irregular for stars below
12 Msun, K > 15.5 mag. The spectroscopy shall be used to derive the MF from
spectrally classified stars in the critical regime and probe the irregularities.
The cluster is heavily embedded and most objects on the field are red (H-K~2).
The tip-tilt star is a blue foreground giant, which we have used previously for
NGS observations with SINFONI. Fields are selected to cover the largest number of
primary targets (15 < K <17.7). The RA/DEC
positions of the guide star and each field are derived from the same NACO
image, and relative positions from the GS to each field are confirmed
from the same image.
Tip-tilt guide star: GSC2 ID: S222122222425 (same for all fields!)
GSC2 RA: 17:45:49.763 DEC: -28:49:22.30
GSC2 R-mag 15.31 colour R-B_J=2.96 mag
NACO RA: 17:45:49.782 DEC: -28:49:22.39
NACO K=10.6 mag H=12.4 mag
The NACO RA/DEC provide the reference coordinates for the target fields.
Object/Field RA DEC K-mag H-mag distance tip-tilt star/target
NACO NACO max max radial ["] RA["] DEC["]
-------------------------------------------------------------------------------
Arches F6 17:45:50.658 -28:49:19.59 12.0 13.2 15.3 +15.00 +2.80
All offsets are given in arcseconds.
A nearby, dark sky position without foreground stars is selected to avoid
contamination from the dense Galactic Center population.
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 ?
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 15:40:19 2009
If you have comments, please contact usd-help@eso.org