README web version of /home/usg/OPS/MTS/readme_xml/readme_75009102

Principal Investigator Email Address

• schuetz@mpia.de

Estimated Total Execution Time (hours, including overheads)

• 9.25

General Description

• A) Goal of this run:
  
  Resolving the circumstellar emission of 3 disk candidate stars (cf. proposal).
  
  
  B) Some general comments:
  
  1.) Magnitudes of objects
  
  Magnitudes and spectral types are written in the comment line of each OB.
  
  
  2.) Finding charts
  
  Finding charts were created from 2MASS data. Chart #2 for HD 155448 had been obtained
   with ADONIS.
  
  
  3.) Field rotation
  
  Some targets have 2 OBs with observations at different position angles (0 deg and
   33 deg) to better reveal circumstellar emission and to eliminate also detector artefacts.
  
  
  4.) Sky measurements
  
  We checked the 2MASS data for good positions to take the sky frames. HD 155448 is
   in a very crowded field and we are aware that a perfect sky frame may not be possible
   here.
  
  
  5.) DITS in the coronographic templates
  
  In the coronographic image we try to see circumbinary emission in the broadband
   filters H and Ks, while otherwise only NB filters can be used. DITS for the coronographic
   OBs were estimated in order not to saturate the other sources in the field (since
   the fluxes of the other sources are not very firm, the DITs are a bit conservative
   and rather short).

Waiver Requests

• No Waiver Request was submitted.

Critical Observing Condition Constraints

• Observing condition constraints were already defined in Phase 1.
  
  
  We see the "airmass 1.4 limit" (imported by the JNPS and not to be edited by the
   user) not as a hard limit. Rather than receiving no data at all, we agree with observations
   also taken at a higher, still REASONABLE airmass.

Time-Critical Aspects

• No coordination with other observations is required.

Special Execution Requirements

• 1.) DITS and NDITS (important point)
  
  With JNPS we carefully calculated the DITS and NDITS to be in the mid of the linearity
   range. However, this result will also depend on the actual weather condition which
   is beyond our knowledge. The executing astronomers are authorized to modify the
   DITS (and NDITS correspondingly) if this should become necessary due to the actual
   observing conditions.
  
  
  2.) Standard star (STD) observations
  
  A photometric calibration will partly be done with 2MASS data. In addition, we submitted
   some STD OBs, which should be carried out very close in time to the science objects
   they are linked to (see field "calibration requests" in each template). For HD 155448
   SW observations, we can calibrate the fluxes with a star in the field which is also
   resolved by 2MASS. Therefore the STD for HD 155448 only requires observations in
   LW (it would be even too bright in SW).
  
  
  3.) Coronography
  
  The mask is to be put on the primary of HD 155448, indicated with "A" in the finding
   chart #2 of this object.
  
  
  4.) No PSF stars
  
  Different to the proposal text, we do not intend a separate observation of PSF stars
   for a PSF subtraction.

Special Calibration Information

• According to the NACO user manual the calibration plan provides flatfields
   (lamp or twilight) also for the NB filters.
  
  We have no further special calibration requests.

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 ?

• 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