README web version of /home/usg/OPS/MTS/readme_xml/readme_75077100

Principal Investigator Email Address

• ayoldas@mpe.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 21:00:00.000

General Description

• LSS spectroscopy with FORS2 300I and order separation filter OG590+32
   of the host galaxies of GRB 980703 (2 hours 30 min) and GRB030329 (2 hours 55 min),
   splitted into 3 OBs each. 2 hours LSS spectroscopy with FORS2 300I and order separation
   filter OG590+32 of the host galaxy of GRB 020405, splitted into 2 OBs. LSS spectroscopy
   with FORS2 300V and order separation filter GG435+81 of the host galaxies of GRB
   990712 (2 hours) and GRB 011121 (2 hours), splitted into 2 OBs each. 4 hours LSS
   spectroscopy with FORS2 of the host galaxy of GRB 031203, with 300V and order separation
   filter GG375+80 (1 hour), and with 600RI and order separation filter GG435+81 (2
   hours 55 min splitted into 3 OBs). 7 OBs are additionally dedicated for the LSS
   observations of standard stars GD153, LTT7987, LTT3864 and LTT3218.
  Goal: recombination time-scale and gas density determination of the GRB environments
   by measuring the changes in emission line intensities and comparing with previous
   observations.

Waiver Requests

• Waiver request was sent on 16 Feb 2005 to execute OBs longer than one
   hour execution time, i.e 3 times 1200 seconds plus overheads or 2 times 1800 seconds
   plus overheads. Waiver request was approved on 17 Feb 2005.

Critical Observing Condition Constraints

• A clear sky and dark moon (lunar illumination 0.3 or less) is required
   for all 6 GRB targets.

Time-Critical Aspects

• GRB 031203 is visible during the night from Paranal from April to beginning
   of June at airmass <1.3.
  GRB 030329 is visible during the night from Paranal from April to beginning of June
   at airmass <1.5.
  GRB 020405 is visible during the night from Paranal from April to beginning of July
   at airmass <1.1.
  GRB 011121 is visible during the night from Paranal from April to beginning of June
   at airmass <1.7.
  GRB 980703 is visible during the night from Paranal from July to end of September
   at airmass <1.3.
  GRB 990712 is visible during the night from Paranal from August to end of September
   at airmass <1.6.
  No further time constraints are necessary.
  All these time-critical aspects are also indicated in observation blocks.

Special Execution Requirements

• If possible, please execute the OBs as grouped below right after each
   other: 
  group1: OBs "LSS GRB 980703","LSS GRB 980703-0", "LSS GRB 980703-1"
  group2: OBs "LSS GRB 990712","LSS GRB 990712-0"
  group3: OBs "LSS GRB 011121","LSS GRB 011121-0"
  group4: OBs "LSS GRB 020405","LSS GRB 020405-0"
  group5: OBs "LSS GRB 030329","LSS GRB 030329-0", "LSS GRB 030329-1"
  group6: OBs "LSS GRB 031203 600RI","LSS GRB 031203 600RI-0","LSS GRB 031203 600RI-1"
  group7: OB  "LSS GRB 031203 300V"
  The OBs forming a group are identical and running them in direct sequence would
   save the repetition of the aquisition and through slit templates.
  In addition, it is very important to have the spectroscopic standard star OBs right
   after the related group. For each group, it is enough to execute a single standard
   star OB right after one of the OBs in the group. The details are specified in the
   Calibration Requirements section of each science OB.

Special Calibration Information

• The spectral type and V-band magnitudes of the standard stars we want
   to observe:
  name: GD153     type: DA1 (WD) 	V-mag: 13.35
  name: LTT7987   type: DA  (WD)	V-mag: 12.23
  name: LTT3864	type: F		V-mag: 12.17
  name: LTT3218	tyep: DA  (WD)	V-mag: 11.86

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

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 ?

• YES

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 FORS2 Phase 2 web page ?

• N/A