README web version of /home/usg/OPS/MTS/readme_xml/readme_75038400

Principal Investigator Email Address

• pontoppi@strw.leidenuniv.nl

Estimated Total Execution Time (hours, including overheads)

• 23:29:24.000

General Description

• This programme will obtain L- and M-band spectroscopy toward embedded
   and background stars associated with two dense molecular cores (L310 and SVS4).
   The main goal is to map the abundance of CO ice in the two cores. Central to the
   execution of the programme is that the instrument is rotated to allow two sources
   in the slit for each pointing. The OBs are supplied with approximately correct position
   angles, but the rotation may have to be refined according to the finding charts
   in order to properly include two requested targets in the slit.
  
  L310 will be observed in the L- and M-band with 4 pointings each, and SVS4 only
   in the M-band with 4 pointings.
  Three pointings for the faintest sources (2 for SVS4 and one for L310) have each
   been split into two independent set of OBs
  (science + standard) in order to obtain longer on-source integration times.
  
  Because the SVS4 targets are all located within a field only 30 arcseconds across,
   all OB positions for this core are set to a single central position. The L310 targets
   are spread over a larger region, and therefore the OB positions for this core are
   set to the central position between the two targets of a given pointing.

Waiver Requests

• A waiver request with the Id 75.C-0384A.01.WAV was submitted on February
   4, 2005, and approved on February 9 and February 11, 2005. 
  
  This waiver request concerned the rule stating that the total execution time for
   an OB cannot exceed 1 hour. We got the permission to extend the execution time for
   these OBs to 1 hour 15 minutes. 
  Further we got permission to change one source of our source list.

Critical Observing Condition Constraints

• All spectra should be observed during clear conditions with an airmass
   of less than 1.3 and with an atmospheric humidity of less than 30%.

Time-Critical Aspects

• There are no time critical aspects associated with this programme.

Special Execution Requirements

• We designed the OBs in a way that the jitter box should be set to 0. Our
   experience through earlier programmes is that this simplifies the data reduction
   without affecting the final product quality.

Special Calibration Information

• The spectra require the observation of telluric standard stars either
   just before or after the science observations. We prefer that the standard is observed
   within 0.1 airmass of the source, although a somewhat worse
  airmass difference (<0.15) should not prohibit the execution of an OB.
  
  The calibration star for L310 in the M-band is BS7121 (Type: B2V; Magnitude: 2.8).
  
  For L310 in the L-band the calibration star is BS6700 (Type: B9V; Magnitude: 4.9).
  
  The calibration star for SVS4 in the M-band is HD177756 (Type: B9Vn; Magnitude:
   3.5).

ToO Information

• This is not a ToO programme.

ToO Activators List

• This is not a ToO programme

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• We have no pro-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 ?

• 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?

• 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

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

• YES

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
 ?

• YES

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 ?

• N/A