README web version of /home/usg/OPS/MTS/readme_xml/readme_78026901

Principal Investigator Email Address

• grise@astro.u-strasbg.fr

Estimated Total Execution Time (hours, including overheads)

• 3.3

General Description

• This is a straightforward imaging run consisting of 10 photometric observations
   of ~ 2*360s exposure time each with the B band filter.
  The goal is to study the variability of the optical counterpart of the ultraluminous
   X-ray source NGC1313 X-2. This star has B~23.3 mag and is variable by at least 0.2
   mag on a timescale of days.
  We request that these observations will be carried out in conjuction with program
   078.D-0269(A) which consist of 10 spectroscopic observations of the same target.
  For scientific but also practical reasons (saving of slew time), we request that
   each of the photometric observation should be carried out directly before or after
   the spectroscopic observation.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• Critical observing condition constraints are mainly time-critical and
   so they are in the corresponding Readme part.

Time-Critical Aspects

• We emphasize that these observations should be carried out in conjunction
   with our spectroscopic observations program 078.D-0269(A).
  
  In order to cover possible orbital periods of the target up to some 10 days, we
   request that the 10 observations should be carried out during two subsequent new
   moon periods with 5 observations each.
  In order not to set too severe time constraints, subsequent observations could be
   done with time intervals from one to three days in any given new moon period.
  
  In case of bad sky conditions during one new moon period, the second set of observations
   could also be postponed one or two months. This will be less than optimal, but will
   still render scientifically important results.
  
  We were also granted 10 spectroscopic observations (programme 078.D-0269(A)) of
   NGC1313 X-2.
  For scientific but also practical reasons (saving of slew time), we request that
   each of the photometric observation should be carried out directly before or after
   the spectroscopic observation.
  
  In the event that the photometric observations will be taken after spectroscopy
   and that the seeing has deteriorated to < 1", the photometry should be carried
   out even though the seeing constraint was <0.8".

Special Execution Requirements

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Special Calibration Information

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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 ?

• N/A