README web version of /home/usg/OPS/MTS/readme_xml/readme_75006400

Principal Investigator Email Address

• swolf@mpia-hd.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 7

General Description

• MIDI observations of the dusty, discoidal environments of 3 TTauStars.
  This run A consists of 14 OBs, 7 for targets, 7 for calibrators.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• It is mandatory to schedule the observations in such a way that the targets
   are not closer than 15degree to the moon.

Time-Critical Aspects

• If procurable the chosen baseline UT2-UT4
  should be parallel to the disk orientation of each scientific target.
  Disk-orientation for (see Prato et al. 2003):
  RU Lup: 122 degree
  HBC 639: 12 degree
  SCrA: 158 degree

Special Execution Requirements

• The scientific target HBC 639 is a binary with a Separation of 2.''2.
   The position angle of the second companion is 150degree from North to East.  The
   optical and near-IR brighter (delta(H) = 1.9mag) component is here the first component.
   Thus, the 2MASS-coordinates I provide for the coude giude star are the coordinates
   of this first component. The second component is the brighter component in the mid-IR
   (delta(L) = -0.5mag) and was the only component which could be observed by TIMMI2
   (Przygodda et al. 2003) in Nband. Therefore, we want to observe this second component.
   The scientific target SCrA is a binary (distance 1.''3, position angle 160degree).
   The optical and infrared brighter (delta(H)=0.8mag, delta(L)=1.0mag) component should
   be observed 3times (twice by UT2 - UT4 (this run) and once by UT3-UT4(->run B))
   and the fainter component once (UT2-UT4 (this run)).  For each observation block
   of SCrA it is necessary to check where the companion is in order to observe the
   correct object.

Special Calibration Information

• The calibrators were chosen because of their proximity to the scientific
   targets. All of them were selected from the CalVin list.
  Calibrators are
  HD152885(V=6.61mag,F12um = 12.6Jy,spect. type:M1 III,distance: 12.0deg.) for RU
   Lup
  HD142804(V=6.567mag,F12um = 11.7Jy,spect. type: M1 III,distance: 10.9deg.) for HBC
   639
  HD178345(V=4.117mag,F12um = 12.5Jy,spect. type: K0 II,distance: 3.0deg.) for SCrA.
  Each calibrator should be observed right after the observation of the corresponding
   scientific target.   
  The calibrators HD152885(->SCI_RULup) and HD142804(->SCI_HBC639) are more
   distant than 5degrees to the corresponding scientific object. So the selected calibrator
   could be not available at the time when the scientific target is visible. Thus,
   we specify an alternative calibrator for the concerning targets in the USER COMMENT
   Line and Calibration Requirements Folder of the OBs of the corresponding scientific
   target without creating new OBs. But, of course, the Paranal Science Operations
   should have the right to exchange these alternatively suggested calibrators if it
   is necessary.

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 ?

• 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 'User 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