README web version of /home/usg/OPS/MTS/readme_xml/readme_81069402

Principal Investigator Email Address

• pato@das.uchile.cl

Estimated Total Execution Time (hours, including overheads)

• 5.2

General Description

• The runs in this proposal (A-E) monitor five planetary transits (one for
   each observing run); therefore, timing constraints are critical. The observation
   of each transit will last 5.2 consecutive hours (see \"time-critical aspects\")
  
  Also, note important note regarding seeing requirements on \"Special execution requirements\"
  
  Target coordinates given in the OB do not place the star at the center of the field.
    Instead they place the target near the upper left corner where, from previous experience
   with FORS, a nearby bright star will be placed outside the field of view to minimize
   its contamination.  It is important to leave this star outside the frame even if
   this means that the target object will not be centered in the field.
  
  Just in case, the precise coordinates of OGLE-TR-111 are
  ra:   10h 53m 17.91s
  dec: -61d 24m 20.3s
  
  The first finding chart shows a full frame previously obtained with FORS centered
   at the coordinates specified in current OB.  In it, a white rectangle shows approximately
   the area zoomed-in by the second finding chart, where the target has been marked.

Waiver Requests

• Waiver 081.C-0694A.01 requests a long OB.

Critical Observing Condition Constraints

• We lower our original requirements to accept thin cirrus in runs A-E.

Time-Critical Aspects

• This program observes 5 transit events (one per each run) that happen
   only at precise times.  The observations must be started and finished precisely
   at the time indicated at the \"time interval\" section, and repeated below:
  
  Run  Start                  End
  A    2008-04-21T22:45:00    2008-04-22T03:57:00
  B    2008-04-25T22:55:00    2008-04-26T04:07:00
  C    2008-04-29T23:20:00    2008-04-30T04:32:00
  D    2008-05-03T23:40:00    2008-05-04T04:52:00
  E    2008-05-12T00:20:00    2008-05-12T05:32:00
  
  The first runs start very close to sunset, therefore, just start observing as early
   as possible.
  
  One additional alternative date is given in \"time intervals\".  The airmass going
   to be larger in this date; therefore, it can ONLY be used if observing conditions
   are not achieved in their respective original date:
  
  RUN    Start                  End
  alt  2008-05-20T01:00:00   2008-05-20T06:12:00
  
  The OB is larger than the total allocated time of 5.2 to account for any overhead
   overestimation by p2pp.  Please, just abort the observations once they reach the
   finishing time.

Special Execution Requirements

• Since there is no offset in this run, please verify at the beginning that
   the target star does not lie in a known bad pixel.
  
  Peak counts of the target star should remain below the saturation level (SL), but
   I also want observing parameters to remain as fixed as possible.  Therefore, at
   the beginning of the observations, please check the peak counts of the target, if
   they are close to ~0.8SL then decrease the integration time by 3 seconds intervals
   until the counts are below 0.8SL, and change NEXPO accordingly to make sure the
   whole time span is sampled (see time-critical aspects).
  
  To try to keep the parameters constant, only decrease the integration time again
   if peak counts go above 0.9SL, and never increase the observing time back.

Special Calibration Information

• ---(Empty)---

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

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