README web version of /home/usg/OPS/MTS/readme_xml/readme_81018200

Principal Investigator Email Address

• tanio@damir.iem.csic.es

Estimated Total Execution Time (hours, including overheads)

• 13.5

General Description

• This is a proposal for imaging 3 Luminous Infrared Galaxies with 4 filters
   each: 2 for measuring
  two features (the 11.3um PAH and the [NeII] emission line) and another 2 for measuring
   their
  adjacent continua.
  
  The observations concerning each galaxy have been divided in 2 OBs, each of them
   containing
  a feature-continuum pair. Within each OB, the observation has been divided in 8
   subsets:
  feature -> cont. -> feat. -> cont. ..., of 570s of on-source time integration
   each, for a total
  OB integration time of 2h 15min (including acquisition and overheads; a waiver has
   been
  approved). There are 2 OBs per galaxy and 3 galaxies so the total execution time
   is 13.5h.
  
  Acquisition of the targets is done with the K-band imager filter. 3 finding charts
   have been
  attached for IC4687 and IRAS17138-1017:
  
  (1) A 2MASS K-band image of the galaxy of 4 arcmin on a side. A red square (with
   a size of
  approx. the VISIR FoV) marks the location of the target.
  (2) A 2MASS K-band image of the galaxy of 1 arcmin on a side. The red square is
   as in 1)
  and the cross marks the position target.
  (3) A HST Pa-alpha image of the very central region of the galaxy (10"x10"). The
   morphology
  of the PAH, [NeII] and MIR continuum emission will be similar to that of this image.
   The red
  cross marks the center of the galaxy.
  -- IMPORTANT: THIS center is the position that should be placed in the center of
   the top-left
  quadrant of the detector when acquiring the target (see below). This is important
   in order
  to keep the whole galaxy emission within one quadrant and to not contaminate the
   others.
  
  NGC5135 has only 2 finding charts attached ((1) and (3)) since it is quite isolated
   and is the
  brightest source within 4 arcmin around.
  
  The acquisition template used for acquiring the targets is always "VISIR_img_acq_MoveToPixel"
  and the SEQ.CHOPNOD.DIR has been set to PERPENDICULAR. For two galaxies (IC4687
   and
  IRAS17138-1017), the TEL.ROT.OFFANGLE has been set to 90 (PA=-90) as well as the
  TEL.CHOP.POSANG in order to avoid some field stars entering in the detector FoV
   during the
  chopping-nodding cycles. For NGC5135, TEL.ROT.OFFANGLE = TEL.CHOP.POSANG = 0.
  In any case, the targets should be always acquired and placed into the center of
   the top-left
  quadrant of the detector in order to keep the 4 beams of the target within the detector
   FoV
  (one within each quadrant): Science observation are always "VISIR_img_obs_AutoChopNod",
  SEQ.CHOPNOD.DIR = PERPENDICULAR, and TEL.CHOP.POSANG = TEL.ROT.OFFANGLE
  as in the acquisition template. A random jitter of 1 arcsec in width has been set.
  
  The (preferably "Cohen") photometric standard star provided by the observatory should
   be
  observed close in time (before/after) to the target so that it matches its airmass.
   Besides,
  it should be observed with all filters defined in the OB(s) that have been executed.
  
  Thank you in advance.

Waiver Requests

• A waiver request for allowing OB executions up to 2h 15min long has been
   approved.

Critical Observing Condition Constraints

• As requested in the proposal, the conditions should be _photometric_ and
   the seeing always lower than 0.6",
  which means diffraction limited observations (~0.35") at ~10um. The airmass should
   be also lower than 1.3.

Time-Critical Aspects

• There are no time-critical aspects associated with the run.

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• ---(Empty)---

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?

• 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 the provided finding chart is at a different wavelength than the observations,
 did you clearly describe in the README file how to identify the target?

• YES

Did you specify a guide star brighter than V=12mag within a field of
 r=5arcmin around the science target?

• YES