README web version of /home/usg/OPS/MTS/readme_xml/readme_60941900

Principal Investigator Email Address

• hsana@eso.org

Estimated Total Execution Time (hours, including overheads)

• 2h05

General Description

• UBV+VIS+NIR spectroscopy of a V=18.5 star (point source) in the NGC55
   galaxy (Sculptor Group).
  
  Aim: SNR > 15 per DIT in all band(except K); SNR total > 35. 
  
  Target : NGC55 C1_31 : RA=00:15:00.01 ; DEC=-39:12:41.39
  
  Observing mode : SLIT / ELEV
  
  Instrument Setup: slitwidth=0.8/0.9/0.6 in UVB/VIS/NIR
  
  Exposure time: 6x900sec in total
  
  Offset pattern: 3 AB cycles (900sec in each position) with Nod throw=5" (approx.
   
                  I trust the SV-team if another value is recommanded for point 
                  sources) to handle sky subtraction in the NIR 
  
  READOUT: 1x1 slow
  
  If needed, please call me any time at :
  +31 20 525 8496 (office hours in Europe)
  +31 65 222 6383 (any other time)

Waiver Requests

• Waiver for 80 min OB for run 60.A-9419A granted.

Critical Observing Condition Constraints

• SKY TRANSPARENCY: 2CLR
  
  SEEING: <= 0.7 (arcsec) in RED (0.8" is ok, but strictly not worse)
  
  AIRMASS: < 1.6
  
  LUNAR ILLUMINATION: 0.5 (0.0-1.0)
  
  MOON ANGULAR DISTANCE: 50 (degrees)

Time-Critical Aspects

• I request 3 AB cycle with 900secDIT at each position. It has been split
   as follows :
  - 1 OB with 2 AB cycle, duration 1h20
  - 1 OB with the 3rd AB cycle, duration 0h45
  
  If possible, please execute the 2 OBs in a row.

Special Execution Requirements

• N/A

Special Calibration Information

• * Telluric standard star: Late B/early A-type
  
  * Spectrophotometric standard star: We'd like to calibrate in flux as the
  change in the spectrum slope from VIS to NIR contains physical information 
  on the stellar winds.

ToO Information

• N/A

ToO Activators List

• N/A

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

• YES

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 specified the S/N ratio at given wavelength in the User Comments
 field of each OB?

• YES

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