README web version of /home/usg/OPS/MTS/readme_xml/readme_76061900

Principal Investigator Email Address

• alain.doressoundiram@obspm.fr

Estimated Total Execution Time (hours, including overheads)

• 01:00:20 per night

General Description

• high resolution spectroscopy of the exosphere of Mercury
  We aim at imaging the exospheric species of the exosphere (Na: 589nm, K: 
  766.5nm)
  and monitor BOTH the spatial and temporal variations.
  In consequence:
  -for the temporal variation: the OB will be repeated each night during 3 
  nights (3 of the 4 nights 30, 31 oct, 1,2 nov)
  -for the spatial variation: the slit will be repeatidily offsetted to 
  cover all the illuminated disk of the planet
  
  In addition to Mercury science observations, we  will  observe  
  asteroids and stars for calibration purpose
  
  Observations of Mercury should start as soon as the sun sets(or even 
  before if possible) and till the elevation limit is reached.
  
  Mercury data:
  apparent magnitude: -0.2
  surface brightness: 3.2 mag/sqarcsec
  illuminated fraction: 64-70%
  angular diameter: 6"

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• Mercury: airmass smaller than 5.0
  Other objects: airmass smaller than 2.0

Time-Critical Aspects

• none

Special Execution Requirements

• All OB with suffix name n1, n2, n3 and n4 must to be realized during the
   night of :
  _n1: night of 10/30/2005 to 10/31/2005
  _n2: night of 10/31/2005 to 11/01/2005
  _n3: night of 11/01/2005 to 11/02/2005
  _n4: night of 11/02/2005 to 11/03/2005
  
  Mercure must be taken just after the sunset and before 0h00UT.
  For Mercury: put the slit in parallactic angle on the photocenter of Mercury 
  at the beginning of each OB. Due to its bright magnitude (-0.2) we don't send finding
   chart.
  The differential tracking in DEC of Mercury (put in REMD_all_acq_Preset) permit
   us to have the 
  spectra of several regions of its surface during each OB.
  
  For other objects: For asteroids and stars, if possible, use an airmass smaller
   than 1.5 and 
  at worst smaller than 2.0. Asteroids and stars are for calibration purposes.

Special Calibration Information

• We will need the flat, bias, lamp, dome calibration frames, as well as
   a 
  star for the flux calibration.

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?

• 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 ?

• N/A