README web version of /home/usg/OPS/MTS/readme_xml/readme_75501800

Principal Investigator Email Address

• snellen@strw.leidenuniv.nl

Estimated Total Execution Time (hours, including overheads)

• 3h27m

General Description

• These are narrow-band NB_2.25 observations of transiting extrasolar planet
   OGLE-TR-56 with
  the aim to measure the light contribution from the planet. This by observing its
   
  secondary eclipse - the moment the planet moves behind the host star. The light
   decrement could
  be as high as a few milli-magnitude.
  
  The brightest star in the field is of K=8.04, this is why short DIT=5.0 exposures
   are used.
  The field is positioned in such way that a K=7.54 star falls ~5" outside the array,
   it 
  is 27" away from the target - OGLE-TR-56 which will be about 75 pixels from the
   edge
  for each jitter position.

Waiver Requests

• A waiver request was submitted and accepted to allow the OB to be longer
   than 1 hr (3.30hr),
  this because the observations have to be done in sequence to monitor the secondary
   eclipse.
  
  A waiver request was submitted to have stars brighter than K=8.0 in the field. This
   turned out 
  not to be necessary because the field is now chosen in such way that the bright
   star falls
  5" outside the array.

Critical Observing Condition Constraints

• Photometric conditions. 
  The seeing is not important as long as <1.2"

Time-Critical Aspects

• Most importantly, these observations have to be done during a secondary
   eclipse of 
  exoplanet OGLE-TR-56, starting an hour before the eclipse begins, and ending 1 hour
   after
  it ends. These are on the following nights:
  
  Observations should be done at one of these specific times and dates:
  Night           UT date   start    end of observations
                              UT      UT
  17/18jun       18-jun-05  03:15   06:45 
  23/24jun       24-jun-05  04:45   08:15 moon at 30 deg.}
  28/29jun       29-jun-05  01:00   04:30 
  4/5jul         05-jul-05  02:30   06:00 
  10/11jul       11-jul-05  04:00   07:30 
  15/16jul       16-jul-05  00:00   03:30 
  21/22jul       22-jul-05  01:30   05:00 moon at 37 deg.}
  27/28jul       28-jul-05  03:00   06:30 
  1/2aug         01-aug-05  23:30   03:00 note date change}
  7/8aug         08-aug-05  00:45   04:15 
  13/14aug       14-aug-05  02:15   05:45 moon at 27 deg.}
  24/25aug       25-aug-05  00:00   03:30 
  30/31aug       31-aug-05  01:30   05:00

Special Execution Requirements

• THe observations should be started within +-10 minutes of the times noted
   in the 
  Time-critical aspects table.

Special Calibration Information

• no special calibration is necessary

ToO Information

• -

ToO Activators List

• -

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• -

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 submitted OBs for standard stars, did you use the provided StandardStar
 templates ?

• N/A

If you are using a specific offset pattern or position angle, did you
 check carefully the definition in the manual ?

• YES

If you are doing spectroscopy, did you draw the slit on the Finding Charts
 ?

• N/A

Did you enter the magnitude of the brightest star in the field-of-view
 in each OB ?

• YES

If you use the MoveToPixel acquisition, have you given clear instructions
 on the FC and in the OB comment section as to how the field should be centered ?

• YES