README web version of /home/usg/OPS/MTS/readme_xml/readme_77028700

Principal Investigator Email Address

• kohnaka@mpifr-bonn.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 8.96

General Description

• Optical low-resolution spectroscopy (360--600nm) of 3 silicate carbon
   stars to investigate a possible signature of a low-luminosity companion.  Since
   our targets are very red (i.e., quite bright in the V band, but very faint in the
   U band), we take two exposures for each object, one short exposure optimzed for
   the B- and V-band ranges with GRISM_300V (slit width 0.5") and a long exposure optimzed
   for the shorter wavelength range (< ~400nm) with GRISM_150I (slit width 1.0").
    In this long exposure, the V-band range will be saturated.  However, the exposure
   time of each frame and the number of frames were set to avoid CCD bleeding and gain
   S/N ratios at shorter 
  wavelenths (< ~400nm) as much as possible.  For two objects (IRAS18006-3213 and
   IRAS11048-6046), a total exposure time of this long exposure is significantly longer
   than 1 hour, so it is split into 3 or 4 OBs that are shorter than 1 hour.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• All OBs should be carried out in CLEAR or better conditions with seeing
   <= 1", airmass <= 1.7.  The OBs using GRISM_150I should be carried out on
   gray nights (FLI = 0.4, Moon angular distance = 120 deg).  The OBs using GRISM_300V
   for IRAS17291-3401 and IRAS18006-3213 can be carried out 
  under brighter lunar phases (FLI = 1.0, Moon angular distance = 90 deg).  However,
   the OB using GRISM_300V for IRAS11048-6046 should be carried out under FLI = 0.7
   and Moon angular distance 
  = 120 deg.

Time-Critical Aspects

• NONE

Special Execution Requirements

• NONE

Special Calibration Information

• NONE

ToO Information

• NONE

ToO Activators List

• NONE

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• NONE

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