README web version of /home/usg/OPS/MTS/readme_xml/readme_84094300

Principal Investigator Email Address

• reunanen@ftml.net

Estimated Total Execution Time (hours, including overheads)

• 7.5

General Description

• UPDATE 17th Sep: added blind offsets for the OBs which use blind acquisition
  
  A snapshot-type survey of 14 low-luminosity AGN at 12 micron with VISIR at or near
   diffraction-limit. It is expected that the objects are faint sources in mid-IR,
   and in some cases only upper-limits for the luminosity of the nucleus might be obtained.
    
  
  Typical OB (1 OB / Target):
  Perpendicular nodding/chopping mode with 8" chopping is used in order to keep all
   the four beams in the field of view. Exposure time is 900s and execution time 30min.
   The objects are expected to be faint and blind acquisition (VISIR_img_acq_Preset)
   is used with the coordinates taken from NED and checked against 2MASS images. Finding
   charts - 2MASS K-band images - are included as reference, though. The target is
   always the nucleus of the galaxy. As blind acquisition is used, blind offset (=chopping
   distance/2.0) has been specified.
  
  Exceptions:
   - NGC 4594 has exposure time of 1800s and execution time of 53min.
   - NGC 1808 is a quite bright target and has several starforming clusters.  Parallel
   chopping/nodding is used in this case with 20" chopping throw. Unlike in all the
   other OBs, template VISIR_img_acq_MoveToPixel is also used: the second attached
   finding chart is from TIMMI-2 (12.9 micron). The nucleus is the brightest source
   with a flux of ca. 600mJy - it should be easily visible even in the 60s acquisition
   image.
  
  User priority:
  NGC 1052 and NGC 4594 have been marked with a higher priority than the rest: this
   should be considered as only suggestive and preferential.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• 0.6" visual seeing provides diffraction limited imaging at 12 micron.
   
  
  The diffraction limit will not only provide a better separation between nuclear
   and extended emission, but also a reasonably stable PSF. The latter is important
   as no PSF calibrators are to be observed.

Time-Critical Aspects

• None.

Special Execution Requirements

• None.

Special Calibration Information

• None.

ToO Information

• N/A

ToO Activators List

• N/A

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• N/A

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 ?

• 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 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?

• NO