README web version of /home/usg/OPS/MTS/readme_xml/readme_78073901

Principal Investigator Email Address

• pierre.kervella@obspm.fr

Estimated Total Execution Time (hours, including overheads)

• 14.5

General Description

• We aim at detecting the light echo of RS Pup on its circumstellar reflection
   nebula. These EMMI observations are relatively simple, except for three points:
  
  - we need a PSF calibration star (HD70555) after each OB executed on RS Pup. We
   have prepared the corresponding OBs, and labeled them so that the association is
   obvious. They are also mentioned in the "user comments" field.
  
  - we have 15 OBs on RS Pup +15 on psf calib. One pair RSPup+psf (50mn) should be
   executed EVERY AVAILABLE P78 SERVICE NIGHT, or WHENEVER POSSIBLE. We do not need
   regular sampling, but at least DIFFERENT NIGHTS. The two BVRI observations should
   be obtained a few weeks apart if possible.
  
  - we have estimated the DIT from I-band pre-imaging obtained in 2003, but we would
   need to review the first images asap in order to check for possible saturation,
   and correct the next OBs if necessary.
  
  Compared to our accepted proposal, we have slightly shifted our strategy from dual
   band VI imaging at every epoch towards B band only imaging for the light echo monitoring
   + two sets of BVRI images to measure the reddening within the nebula. We hereby
   request a waiver to use this modified strategy.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• No critical observing conditions.

Time-Critical Aspects

• There is no time-cricital aspect for our programme. However, we would
   need to cover as much as possible the whole variation cycle of RS Pup (period=41
   days) to observe the full amplitude of the light echo variation in the nebula.
  
  We do not need a precisely regularly spaced coverage of the period, but ideally,
   the OBs of the 15 requested epochs should be executed every 3-4 days in average
   to cover the whole period with our 15 samples.
  
  The two sets of BVRI imaging OBs should be executed on different nights, ideally
   with two weeks in between.

Special Execution Requirements

• The OBs which name contains "PSF" are the PSF calibration star for RS
   Pup. These OBs should be executed just before or after RS Pup. The correspondence
   between the science and PSF calibration OBs is indicated in the user comments of
   the OBs. As a general rule the OB "HD70555-PSF-XX" goes with the OB "RS-Pup-XX".
   The two multi-color imaging OBs in BVRI follow the same rule.

Special Calibration Information

• The PSF star HD70555 should be observed just before or after RS Pup. The
   OBs have been prepared accordingly.

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 ?

• 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 ?

• YES

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