README web version of /home/usg/OPS/MTS/readme_xml/readme_83045205

Principal Investigator Email Address

• mk@mpifr-bonn.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 1.5 hours

General Description

• These VISIR images are to support our MIDI observations, which have been
   carried out in visitor mode on 7-12 May 2009. Goals are (1) to obtain accurate photometry
   at 8.5 and 12 um to back-up (rather inaccurate) photometry with MIDI (to better
   calibrate MIDI visibility); (2) to check if there is any extended emission in the
   mid-IR for one target (NGC4151), by comparing the image with a PSF star image. Thus,
   for NGC4151, we request to observe a PSF star right after the target. The PSF/flux-standard
   star HD120933 is chosen so that if NGC4151 is observed at around meridian (note
   the very north position, altitude only 26deg), HD120933 will be also at a very similar
   airmass (about 2.4). Each science target is the brightest object in the instrument
   field.
  
  As of 4 Aug 2009, the last target H0557-385 is now getting observable again toward
   the end of the night. 
  
  Seeing constraints have been relaxed, compared to the original values.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• One of the targets, NGC4151, is at a very northern position (decilination
   +39deg). It will be above the telescope pointing limit for 3 hours, giving an additional
   timing contraint. The PSF/flux calibrator for this target, HD120933, is also at
   a similar, very northern position.

Time-Critical Aspects

• Please execute CAL_PSF_NGC4151_VISIR right after NGC4151_VISIR. It is
   preferable if NGC4151 is observed close to the meridian. Then
  the PSF/flux-calibrator HD120933, if observed right after NGC4151, will have a similar
   airmass to that of NGC4151.

Special Execution Requirements

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Special Calibration Information

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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 ?

• 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 ?

• YES

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?

• N/A