README web version of /home/usg/OPS/MTS/readme_xml/readme_76072500

Principal Investigator Email Address

• skraus@mpifr-bonn.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 2

General Description

• NGC 2264 IRS1, also known as Allen's source, is a young, deeply embedded
   YSO. In the NIR, a weak jet-like feature was found, extending from IRS1 to the north.
  The star shall be observed using the AMBER and MIDI instruments.
  
  For the AMBER observation, we want to use the medium-resolution mode, aiming to
   measure the visibility and closure phase simultaneously in the Brackett-Gamma line
   at 2.165 micron and in the continuum. It is expected that the Brackett-Gamma line
   has approx. 1.3 times the continuum flux (based on archival data).
  
  As can be read in our Waiver Request, we ask for an AMBER DIT of 75 ms in order
   to increase the signal-to-noise of the interferograms.  To have sufficient continuum
   beside the emission line, we ask for 60 spectral channels (corresponding to a wavelength
   range of approx. 0.12 micron). These 60 spectral channels shall be centered on the
   Brackett-Gamma emission line, covering the wavelength range of about 2.225 to 2.105
   micron.
  
  No optical counterpart of NGC 2264 IRS1 is known.  Therefore it is necessary to
   use a nearby source for Coude guiding.  A suitable Coude guide star might be OR
   Mon (RA=06:41:09.09, DEC=+09:30:09.6, J2000, V=16.2), separated 40'' from the target.
    An alternative Coude guide star might be V431 Mon (RA=06:41:08.01, DEC=+09:30:40.8,
   V=15.6), which is slightly further away (1.2').
  
  We generated OBs for two calibrator stars to give a backup calibrator in case the
   first calibrator cannot be observed successfully.  Since it is closer to the target
   (6.4 degree), we specify CAL_HD52976 as our first choice and CAL_HD59311 (distance:
   16.5 degree) as backup calibrator star.

Waiver Requests

• Our Waiver Request 076.C-0725A.01.WAV, aiming for a longer DIT of 75ms
   (instead of 25ms) and a broader wavelength range (60 instead of 20 spectral channels)
   was accepted.

Critical Observing Condition Constraints

• No Critical Observing Condition Constraints apply.

Time-Critical Aspects

• No Time-Critical Aspects apply.

Special Execution Requirements

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Special Calibration Information

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ToO Information

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ToO Activators List

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Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

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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

Did you indicate for each science star OB the corresponding calibrator
 star OB (and vice versa) in the 'Instrument Comments' field ?

• YES

If you use calibrator stars which are not in the CalVin database, did
 you specify their characteristics in the README file and in the OBs ?

• N/A