README web version of /home/usg/OPS/MTS/readme_xml/readme_78038600

Principal Investigator Email Address

• ratzka@mpia.de

Estimated Total Execution Time (hours, including overheads)

• 07:59:15

General Description

• This is an imaging programme with the goal to determine the separations
   and position angles of companions in young stellar binaries.
  
  Instrumental Setup: We will use NACO in it's imaging mode in the K-band! Since it
   provides the highest spatial resolution, the S13-camera is utilised. The reference
   sources for the AO-system are always the main components of the binaries, i.e. the
   brighter stars in the near-infrared. They should be centered during the acquisition.
   Afterwards, a series of generic offsets shifts the binaries to all four quadrants
   of the detector. This method leads not only to a satisfying background subtraction,
   but also allows to cover a reasonable large area around each primary to search for
   new companions!
  
  The DIT in in the science template is chosen is such a way that that we expect to
   be well inside the linearity range of the detector (80% of the detector linearity/flatfielding
   limit). Since we used for the acquisition exposure a DIT that is equal to the DIT
   of the science template, the acquisition image helps to find the correct DIT for
   the science template. Please adjust the DIT in the science template accordingly
   after the acquisition!

Waiver Requests

• A request to correct the coordinates of HK Tau/G2 in the ESO database
   (currently those of HK Tau) has been sent to usd-help@eso.org on 9 August 2006.

Critical Observing Condition Constraints

• Brightest Targets in the field-of-view of each OB:
  --------------------------------------------------
  
  None of these targets violates the limiting magnitude (3 mag = BB + N90C10 dichroic)!
  
  LHS1070   	 8.241 mag (science target = calibrator)
  HD284135	 7.763 mag (science target)
  V773Tau	 	 6.210 mag (science target)
  FOTau	 	 8.121 mag (science target)
  CZTau	 	 9.362 mag (science target)
  RXJ0420		10.505 mag (science target)
  TTau		 5.325 mag (science target)
  FSTau	 	 8.178 mag (science target)
  BD+26718B	 7.783 mag (science target)
  RXJ0430		 8.386 mag (science target)
  LkHa331		 8.768 mag (science target)
  XZTau		 7.291 mag (science target)
  HKTau/G2	 8.106 mag (science target)
  GGTauA		 7.364 mag (science target)
  UZTauw		 7.354 mag (comp. 3" to the east of science target)
  GHTau		 7.794 mag (science target)
  ISTau	 	 8.642 mag (science target)
  IWTau		 8.275 mag (science target)
  LkHa332G2	 8.227 mag (science target)
  LkHa332G1	 7.945 mag (science target)
  LkHa332		 7.942 mag (science target)
  RXJ0444		 8.707 mag (science target)
  RXJ0455		 8.567 mag (science target)
  RXJ0456		10.323 mag (science target)
  HD286179	 8.463 mag (science target)
  Theta1OriH	 8.564 mag (science target = calibrator)

Time-Critical Aspects

• none

Special Execution Requirements

• none

Special Calibration Information

• No additional OBs for PSF-references are necessary. We can either (wider
   binaries) use the PSF of one of the binary components to deconvolve the image of
   the other one or (closer binaries) go to a nearby source by using generic offsets!
  
  To calibrate the pixelscale of the detector we included observations of two well
   known "multiple" systems. The Trapezium Cluster around Theta 1 Ori H and the triple
   system LHS 1070, whose close orbit is well enough known (see Ratzka et al., PhD-Thesis,
   University Heidelberg, 2005)!

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 ?

• 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 ?

• N/A

If you have PSF reference star OBs, do the names of those OBs begin with
 PSF_ ?

• N/A

If there are Finding Charts attached to your OBs, is the field-of-view
 of at least one of these charts 2' x 2' (with clearly labelled field orientation)
 ?

• YES

Have you clearly marked and labelled your wavefront reference objects
 R1, R2, R3, ... (as specified in the NAOS Preparation Software) on your Finding
 Charts ?

• YES

Have you specified the magnitude of the brightest object in the field-of-view
 for each OB ?

• YES

Are there objects in any of your fields (including standard stars) which
 are brighter than the limits specified in the User Manual and on NACO web Pages
 ?

• NO

If the previous answer is yes, have you given a list of OBs and a justification
 for the brightness limit violation in the general description field ?

• N/A