README web version of /home/usg/OPS/MTS/readme_xml/readme_78038301

Principal Investigator Email Address

• jesper@astro.su.se

Estimated Total Execution Time (hours, including overheads)

• 3.0

General Description

• The purpose of this ToO proposal is to take long-slit spectra of three
   previously-confirmed  high-redshift Type Ia supernovae at two phases in their evolution
   (seperated by ~2 observer-frame weeks).
  
  We require a unique setup for these observations: LSS mode, 1.0" slit, 300V grism,
   GG435 filter. The targets are given the preliminary name "SN2006xx" as these supernovae
   are yet to be discovered. We have prepared one OB per exposure time request (see
   ToO information) to cover faint/bright targets.
  
  We will provide the RA, DEC, finding chart, and target name at trigger. We may also
   require that the position angle be set to a different value than its default (0),
   to include another target, e.g. the host galaxy of the supernova, in the same spectroscopic
   slit.

Waiver Requests

• A waiver request was submitted on Fri, 28 Jul 2006 and approved on Tue,
   01 Aug 2006. The reason for this request was OBs in excess of one hour.

Critical Observing Condition Constraints

• These high-redshift Type Ia supernovae are faint targets (R = 22.0-23.5)
   that will be observed during grey time. Therefore, seeing is key (<= 0.8") and
   sky transparancy must be clear.

Time-Critical Aspects

• There are no time-critical aspects.

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• We have provided OBs for flux-calibration of our spectra. The OBs are
   called:
  
  ToO_CAL__LSS,
  
  where  is the name of the standard star:
  
  STD_NAME	Vmag	SpecType
  --------------------------------
  Feige110	11.83	DOp
  LTT2415		12.21	?
  LTT9491		14.10   DC
  VanMaanen2	12.38	DZ7
  
  We will potentially request one such calibration spectrum on the same night as the
   science observation. These observations are included as standard science OBs since
   the slit width is the same as for the science targets (1"). However, please take
   standard star spectra as part of the Calibration Plan (MOS, 5" slit, 300V grism,
   GG435 filter), as we may end up using these for flux calibration purposes.

ToO Information

• This is a ToO run. The supernovae we are planning to follow-up spectroscopically
   are yet to be discovered. The supernova coordinates, magnitude, phase will be provided
   by members of the ESSENCE Team, who will have a first spectrum to confirm the supernova
   is indeed of type Ia.
  
  We do not yet know the magnitudes of these targets, which depend both on the individual
   supernova and its phase. However, we expect these to be in the range R = 22.0-23.5.
   We have prepared a set of OBs, all identical except for the exposure times. All
   comprise three exposures, with a 6" offset between each. Below are the integration
   times and the corresponding total execution time (as reported by p2pp) of each OB:
  
  Exposure Time	Execution Time
  ------------------------------
  3 x 800s	01:02:51.000
  3 x 850s	01:05:21.000
  3 x 900s	01:07:51.000
  3 x 950s	01:10:21.000
  3 x 1000s	01:12:51.000
  3 x 1050s	01:15:21.000
  3 x 1100s	01:17:51.000
  3 x 1150s	01:20:21.000
  3 x 1200s       01:22:51.000
  3 x 1250s 	01:25:21.000
  3 x 1300s	01:27:51.000
  3 x 1350s	01:30:21.000
  3 x 1400s	01:32:51.000
  3 x 1450s	01:35:21.000
  3 x 1500s       01:37:51.000
  3 x 1550s   	01:40:21.000
  3 x 1600s	01:42:51.000
  3 x 1650s	01:45:21.000
  3 x 1700s	01:47:51.000
  3 x 1750s	01:50:21.000
  3 x 1800s       01:52:51.000
  
  The OB names reflect these exposure times, and are called:
  
  ToO_SN2006xx_LSS_exp,
  
  where  is one of 3x800, 3x850, ... , 3x1800; e.g.:
  
  ToO_SN2006xx_LSS_exp3x1200,
  
  is an OB consisting of 3 exposures of 1200s (20 minutes) each, with offsets of 6"
   between each 1200s exposure.

ToO Activators List

• The following investigators are authorized to trigger a ToO observation
   for this programme:
  
  Jesper Sollerman (jesper@astro.su.se)
  Tamara Davis (tamarad@mso.anu.edu.au)
  Bruno Leibundgut (bleibundgut@eso.org)
  Peter Challis (pchallis@cfa.harvard.edu)
  Stephane Blondin (sblondin@cfa.harvard.edu)

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• ---(Empty)---

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 ?

• N/A

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

• YES

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

• YES

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 ?

• N/A