README web version of /home/usg/OPS/MTS/readme_xml/readme_76044600

Principal Investigator Email Address

• gilles@iaa.es

Estimated Total Execution Time (hours, including overheads)

• 10

General Description

• Use FLAMES MEDUSA+UVES (LR04/580 gratings and <4-hr total exposures)
   to obtain accurate radial velocities for ~200 globular clusters (GCs) lying in the
   outer halo of the Leo I group galaxy
  NGC 3379 (=M105, E1), in two slightly overlapping pointings extending up to 20'
   (60 kpc) from the galaxy core (observed at high S/N with one UVES fibre to get accurate
   redshift). A dozen of confirmed GCs from our previous GIRAFFE run (71.B-0537) are
   reobserved in each of the pointings to check the velocity accuracy. A 1st field
   (5 identical OBs M105NW*) centered 9' NW from the galaxy encompasses more than 100
   GC candidates, selected as faint (19 < V < 22.5) point-like sources having
   the B-V and V-R colours of Galactic GCs. The 2nd FLAMES pointing, 9' South-West
  of NGC 3379 (5 OBs M105SW*) includes ~90 candidates and thus can be assigned a lower
   priority.
  All targets were selected from deep, wide-field (36'x36') 4mKPNO/MOSAIC images whose
   astrometry was anchored to GSC2.2 with a low <0"3 rms. J2000.0 coordinates for
   the guide and 4 FACBs stars are also based on GSC2 and were compared to UCAC and
   USNO. The two fibre configurations are valid within 4h from the Meridian, NGC 3379
   being observable at airmass<2 during >5h from late January 2006 til the end
   of P76. We expect a S/N~5 per pixel for V=22 targets in good observing (<=0"8
   seeing, grey time is OK) conditions with 5x2775s exposures.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• A seeing better than 0"8 is required considering the faint magnitudes
   of our GC candidates.
  Very thin cirrus are acceptable, and even if full dark time is preferred, a 9-day
   Moon is not 
  a big issue for the ~500-600 nm range of the LR4 grating (and having 30 to 40 fibres
   dedicated for sky subtraction). S/N of our point-like targets near the FLAMES field
   border would degrade rapidly during a 46-min exposure for observations performed
   lower than sec(z)=2 without an ADC.

Time-Critical Aspects

• None

Special Execution Requirements

• The 5 identical OBs for the NW field (M105NW*) should be completed first,
   as this pointing encompasses ~10 more targets than the SW field (thus M105SW1-5
   OBS were assigned a priority 2).

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

• N/A

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