README web version of /home/usg/OPS/MTS/readme_xml/readme_76058904

Principal Investigator Email Address

• Reynald.Pain@in2p3.fr

Estimated Total Execution Time (hours, including overheads)

• 60.0

General Description

• This spectroscopic run is part of the Supernova Legacy Survey (SNLS) program
   aiming at identifying high redshift type Ia supernovae and at measuring their redshifts.
   Supernovae candidates are discovered and followed by the MEGACAM camera in the framework
   of the CFHT Legacy Survey (CFHTLS). They are found by a repetitive observation of
   four one square degree fields every 2 or 3 nights during grey/dark period, each
   field being observable 5-6 months per year.
  
  Spectra should be taken as near as possible to the moment of maximum luminosity
   but within the dark/gray period. Estimates of this moment are based on observations
   at the CFHT and are communicated to the VLT observers. As supernovae coordinates
   are not yet known, we have just submitted template OBs to take into account of the
   different instrument configurations and observation conditions. Only the coordinates
   and the reference offsets of the blind offset star have to be updated.
  
  Once one observation is completed, data should be accessible to perform a fast reduction
   and to evaluate data quality. We are therefore requesting that data are made immediately
   available through one of the ToO accounts in Garching.

Waiver Requests

• 176.A-0589E.01.WAV [APPROVED]
  
  I am glad to inform you that your request to have OBs of 1h 30min long has been
   approved. Please note that the usual caveat applies that if the conditions degrade
   beyond specifications after the 1st hour, the OB will not be repeated.

Critical Observing Condition Constraints

• As supernovae candidates are relatively faint (typically 23< magI <24.5),
   good observing conditions are required:
    * seeing < 1.0 arcsec
    * Sky transparency: clear
    * Airmass < 1.6
    * Lunar illumination < 0.6
    * Moon angular distance < 60

Time-Critical Aspects

• Due to CFHT observation program, we need that our observations are scheduled
   about 6 nights before to about 10 nights after new moon:
  - Period: October 16 to November 1 (new moon: October 22)
    * Time budget: 12 hours
    * Observed field : 02h26:-04d30 and 22h15:-17d44
  - Period: November 14 to November 30 (new moon: November 20)
    * Time budget: 12 hours
    * Observed field : 02h26:-04d30, 08h54:-04d15 and 22h15:-17d44
  - Period: December 14 to December 30 (new moon: December 20)
    * Time budget: 12 hours
    * Observed field : 02h26:-04d30 and 08h54:-04d15
  - Period: January 13 to January 29 (new moon: January 19)
    * Time budget: 12 hours
    * Observed field : 02h26:-04d30 and 08h54:-04d15
  - Period: February 11 to February 27 (new moon: February 17)
    * Time budget: 6 hours
    * Observed field : 08h54:-04d15
  - Period: March 12 to March 28 (new moon: March 18)
    * Time budget: 6 hours
    * Observed field : 08h54:-04d15

Special Execution Requirements

• Not Applicable

Special Calibration Information

• Not Applicable

ToO Information

• Although this program is not formally a ToO program, the observations
   are of a ToO nature. The OB details and finding charts will be submitted once the
   supernovae have been discovered.

ToO Activators List

• Stephane BASA, stephane.basa@oamp.fr
  Melanie FILIOL, Melanie.Filiol@oamp.fr
  Jeremy LE DU, ledu@cppm.in2p3.fr

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• Not Applicable

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 ?

• N/A

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

If you have prepared your finding charts with tools other than FIMS,
 do they comply with the specifications on the FORS1 Phase 2 web page ?

• YES