README web version of /home/usg/OPS/MTS/readme_xml/readme_82094201

Principal Investigator Email Address

• Fabien.Malbet@obs.ujf-grenoble.fr

Estimated Total Execution Time (hours, including overheads)

• 2h

General Description

• In order to confirm, the presence of an hot spot in the FU Ori system,
   one needs to detect the modulation detected in Malbet et al. (2005). We propose
   therefore to observe with two different configurations: A0-K0-G1 and A0-D0-H0 with
   hour angles ranging respectively from -1h to +3h and from -0.5h to +1.5h (corresponding
   to the uv coverage available for this target decliantion, see http://www.eso.org/~mwittkow/delayrestr.html)
   at low spectral resolution in order to get color information on the resolved structure.
   We would like to have the best uv coverage and therefore we want to aletrenate during
   2h the scientific target with a calibrator (the primary calibrator is HD 42807,
   but there is also an additional one, HD 38529, that can be done from time to time
   instead of HD 42807). It is important to have the quickest sci/cal aletrnance in
   order to get a good sampling of the uv track.

Waiver Requests

• No Waiver Request was submitted. We asked the baseline to be changed because
   of an error in P1 proposal (baseline in immediate objective, box 8B,  was not the
   same than the one in box 15). As a matter of fact the objet would not be observable
   if the baseline is not changed.

Critical Observing Condition Constraints

• The source is observable only 2h and it is important to sample the uv
   track from LST 5:17 to LST 5:27 in order to get useful observations.

Time-Critical Aspects

• Can be observed at any time between beginning of December to mid-February.
   Best month is January.

Special Execution Requirements

• Normally the time allocated does not allow the target to be observed two
   times, but nominal time with cal-sci-cal observations account only for 1h45. Therefore
   if time allows it (e.g. end of night with no other program to observe), I would
   like to do cal1-sci and sci-cal2 which counts for 2h20. M. Wittowski advised me
   to prefer the cal1-sci-cal2 combination with 2 science templates in it, therefore
   a 15mn more. 
  
  For sake of consistency, I would like to keep the same 2 calibrators as for the
   run A. They are located closed to the source. Since the source is at the edge of
   observability for this baseline, it is difficult to meet the requirement of 30min
   of calibrator before and after the science observation which I reduced to 20 min,
   and also, the requirement of 2h of observing sources that I reduced to 1h45. I hope
   this is still acceptable.

Special Calibration Information

• It is important to have the quickest sci/cal alternance in order to get
   a good sampling of the uv track.
  HD 42807 has a diameter of 0.5+/-0.1 mas and HD 38529: 0.4+/-0.3 mas.
  
  I suggest the following sequence:
  - CAL_hd38529: 1 science template, 35 min
  - SCI_fuori: 2 science templates, 35+15 min
  - CAL_hd42807: 1 science templates, 35 min
  
  which gives a total of 2h. Due to DL constrain, it was not possible to have both
   calibrator 30 min before and after the SCI LST range. But we arranged to have a
   calibrator with a 30min delay before (CAL_hd38529) and one with 30min after (CAL_hd42807).
   It is therefore importnat to start with CAL_hd38529, then do SCI_fuori and finally
   CAL_HD42807.

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 ?

• YES

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 ?

• YES

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?

• YES

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 ?

• YES

Did you indicate for each science star OB the corresponding calibrator
 star OB (and vice versa) in the 'Instrument Comments' field ?

• YES

Did you check that your chosen calibrator is bright enough for the instrument
 mode used ?

• YES

If you use calibrator stars which are not in the CalVin database, did
 you specify their characteristics in the README file and in the OBs ?

• YES

Do you use the same DIT for pairs of science target and associated calibrator?

• YES

Are the magnitudes of science target and calibrator within +/- 1 mag
 ?

• YES

Did you verify that your coordinates are as accurate as possible (2Mass
 coordinates recommended) and that they include proper motions if available ?

• YES

Did you specify the LST range of the calibrators such that they cover
 the range from 30 min before the start of the LST range of the science target to
 30 min after the end of the LST range of the science target ?

• YES