README web version of /home/usg/OPS/MTS/readme_xml/readme_75051600

Principal Investigator Email Address

• gilles@iaa.es

Estimated Total Execution Time (hours, including overheads)

• 8

General Description

• Use FLAMES MEDUSA+UVES (LR04/580 gratings and 3-hr total exposures) to
   obtain accurate
  radial velocities for ~200 globular clusters (GCs) lying in the outer halo of the
   Virgo
  brightest elliptical Messier 49 (NGC 4472), in 2 just overlapping pointings extending
   up to 
  20' (=70 kpc) from the M49 core. Some confirmed GCs from our previous run (72.B-0384)
   are reobserved to check the GIRAFFE accuracy and a few UVES fibres are allocated
   to dE,N.
  A 1st field (OBs m49NW_*) North-West of M49 encompasses about 110 candidate GCs,
   selected 
  as faint (V < 21.7, S/N~5) point-like objects having the B-V and V-R colours
   of Galactic GCs. 
  The 2nd field (4 identical OBs m49SE_*), offset 20' South-East adds 100 outer halo
   targets. 
  All sources were selected from deep 4m KPNO/MOSAIC images (36'x36') whose astrometry
   was
  anchored to USNO with a low rms (<0"3). J2000.0 coordinates for the FACBs and
   guide stars
  are also based on USNO and were compared to UCAC2 values to check from proper motions.
  Guide/FACBs have R~13/12.5,12.8,15.2,15.4 (OBs m49NW_) and R~12.3/12.4,14.3,14.8,14.8
   (m49SE_). Both configurations are valid +-4h from the meridian. We expect a S/N>=5/pixel
   at 543.1 nm in 4x2595s (<1" seeing).

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• A seeing better than 1" is required considering the faint magnitudes of
   the GC candidates.
  Very thin cirrus are acceptable, and even if full dark time is preferred, a 7-day
   Moon is 
  not a big issue for the ~500-600 nm range of the LR04 grating.

Time-Critical Aspects

• The two M49 fields lie at an airmass z < 1.6 during 5 hours from early-April
   to mid-May.
  To improve scheduling flexibility, slightly higher airmasses, up to z=1.8, are still
   acceptable, considering the limited impact of differential refraction during a 43
   min individual exposure.

Special Execution Requirements

• The 4 identical OBs for the NW field (m49NW_*) should be completed first,
   as this pointing 
  encompasses a bit more distant GC candidates than the SE field.

Special Calibration Information

• None

ToO Information

• This is not a ToO program.

ToO Activators List

• N/A

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• None

Source(s) of Pre-imaging

• ---(Empty)---

Pre-imaging sources not listed above

• ---(Empty)---

Do all your OBs comply with the instrument-specific requirements listed
 on the instrument-specific Phase 2 web page ?

• YES

If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
 Category for each Observing Template ?

• N/A

Do all your finding charts comply with both the general and instrument-specific
 Phase 2 Web Pages ?

• YES

If you submitted OBs for standard stars, did you specify the magnitude
 and spectral type of all standard stars in the OBs ?

• N/A

Have you included OBs for any calibrations that you need but which are
 not part of the Calibration Plan ?

• N/A

If you are observing Moving Targets, have you attached suitable ephemeris
 files to your OBs?

• N/A

If you have preferences which OBs should be executed first, did you make
 use of the User Priority field in the OBs ?

• YES

If this is a run that requires coordinated observations with other facilities,
 did you give proper instructions in the Time-Critical Aspects Section ?

• N/A

Did you specify in your OBs the hour angle range for which your Target
 Setup files are valid ?

• YES

Did you specify in your OBs the magnitudes of FACBs and Guide Star for
 all your fields ?

• YES

Are the FACBs and Guide Star in the brightness ranges specified in the
 FLAMES manual ?

• YES

Did you enter the expected signal to noise in your OBs ?

• YES