README web version of /home/usg/OPS/MTS/readme_xml/readme_76503500

Principal Investigator Email Address

• fpatat@eso.org

Estimated Total Execution Time (hours, including overheads)

• 02:00

General Description

• This is a DDT/ToO proposal that aims at detecting the possible emergence
   of a Supernova from the afterglow of GRB060117. It is composed by two parts:
  
  A) BVRI imaging. This should be carried over on a daily basis. According to the
   results of the first observations we may want to change the observing frequency
   in the next days . We will instruct the night astronomer properly as soon as we
   analized the data.
  
  For the time being we submit just the first OB. The next ones will be supplied in
   due time.
  
  B) Low res. spectroscopy. This part will be triggered only if we have a positive
   SN detection. 
  In that case, a spectrum will be obtained around Jan 31/Feb 01. Proper instructions
   will be given in due time.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• Observations have to be executed in twilight. They should be attempted
   also if
  conditions are not good.

Time-Critical Aspects

• The observations are indeed time critical.
  
  First, they need to be executed as soon as possible, since the target is setting
   and the SN evolution at these phases is rather fast;
  
  Secondly, due to the target RA and DEC (21:51, -59:58) observations have to be executed
   during evening twilight. See special execution requirements for more details.

Special Execution Requirements

• It is crucial that the observations are carried out before the end of
   evening twilight,
  otherwise the target will be too low on the horizon. Ideal starting time is the
   end of
  nautical twilight (sun elevation <-12 deg).
  
  Here follow the ephemeris computed for LS, Jan 25/01/2006. They include UT,
  Sun elevation, target airmass and corresponding telescope elevation:
  
  UT     h(sun)  airm  h(tel)
  --------------------------
  00:43  -12.2   2.66  22.1
  00:48  -13.2   2.73  21.5
  00:53  -14.1   2.80  20.9
  00:58  -15.0   2.88  20.3
  01:03  -15.9   2.95  19.8
  01:08  -16.8   3.04  19.2
  01:13  -17.7   3.14  18.6
  -------------------------
  
  The night astronomer should take into account the telescope pointing overhead, and
   try to
  be in position sufficiently early to be able to complete the OB before the airmass
   is too high.
  On the other hand, integration should not start before the end of nautical twilight.
   Total exposure time (including readout overheads) is of the order of 10 minutes.
   Therefore,
  there should be enough time, also in a week from now.

Special Calibration Information

• No special calibrations are required.

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 ?

• 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