README web version of /home/usg/OPS/MTS/readme_xml/readme_78025500

Principal Investigator Email Address

• tristram@mpia.de

Estimated Total Execution Time (hours, including overheads)

• 2

General Description

• This is a pre-imaging of the active nucleus of the Circinus galaxy in
   the NeII and NeII 2 as well as the SIV and SIV 2 filters. The imaging is intended
   to provide a map of the [NeII] and [SIV] emission in order to optimise slit positioning
   for the following spectroscopic run. The images will also be used to map the distribution
   of the ionised gas with high spacial resolution and for an accurate reconstruction
   of the exact position of the slit spectra on the galaxy.
  From MIDI observations we know the continuum flux of Circinus is ~4 Jy at 10.5 micro m
   ([SIV]) and ~16 Jy at 12.8 micro m ([NeII]). The expected line fluxes are > 2e-16
   W/m^2 for [SIV] and > 4e-16 W/m^2 for [NeII]. The nucleus is the brightest source
   in the field of view in the N-band. MIDI acquisition images show an almost unresolved
   point source at the nucleus of Circinus at exposure times of ~5 sec. The acquisition
   exposure time can hence be adjusted as necessary. The long integration images should
   show an extended emission region in SE - NW direction.
  The VISIR detector size shown in the 2MASS finding chart is the one given by the
   GuideCam tool. A MIDI MIR acquisition images is also attached.
  If any questions arise, don't hesitate to call +49 6221 528 - 258.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• None other than defined in the constraints set.

Time-Critical Aspects

• The calibrator should be observed immediately after the science target
   for each of the respected two emission lines, i.e. CAL_HD120404-1 after PRE_Circinus-1
   and CAL_HD120404-2 after PRE_Circinus-2.

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• The calibrator star has been observed several times with MIDI. It is the
   brightes object in the field of view in the N-band.
  HD120404 is a K7III star at 4.55deg distance from Circinus. The magnitudes of the
   star are: V = 5.8 mag, K = 1.4 mag, N = 9.28 Jy. The spectral template flux at 10.5
   micro m ([SIV]) is ~12 Jy and at 12.8 micro m ([NeII]) it is ~8 Jy.
  The VISIR detector size shown in the 2MASS finding chart is the one given by the
   GuideCam tool. A MIDI MIR acquisition images  (exposure time ~5 sec) is also attached.
  The acquisition exposure time can be adjusted as necessary.

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Is this a Pre-imaging run ?

• true

Pre-imaging Requirements

• This is a pre-imaging observation for later spectroscopic line observations.

Source(s) of Pre-imaging

• ---(Empty)---

Pre-imaging sources not listed above

• VISIR

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 ?

• YES

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