README web version of /home/usg/OPS/MTS/readme_xml/readme_77083200

Principal Investigator Email Address

• augereau@obs.ujf-grenoble.fr

Estimated Total Execution Time (hours, including overheads)

• 03:59:42.000

General Description

• The prime goal of this run is to search for circumstellar dust around
  the star HD141569 within about 1 arcsec. We more specifically want to
  confirm the presence of an inclined annulus of dust at a projected
  distance of about 0.8-1arcsec along the disk major axis (0.5-0.6arcsec
  along the minor axis). We are also looking for possible faint companions.
  
  The PA of the major axis of the disk is -3degrees (indicated on the finding charts)
  and the disk is inclined by 55degrees from pole-on.
  
  -->> We want to stress that we need to have field of view oriented such
  that the major axis of the disk (PA=-3degrees) does fall in a usable
  region of the images (especially regions devoided of any diffraction
  pattern by the spiders). Our OBs do not include any rotation of the
  field of view because it is not possible to anticipate the position of
  the diffraction patterns that depends on the observing date. We thus
  request the ESO staff to perform the adequate rotation in order to
  comply with this major requirement. <<---
  
  
  Seeing requirements: see the "Critical Observing Condition Constraints" section
   (this Readme file).
  
  Many thanks.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• --> Seeing requirement <--
  
  During phase I, we non-intentionally specified 'n' for the seeing constraint
  while our observing program requires good seeing conditions. We are
  indeed looking for faint structures and low-mass companions embedded in
  a circumstellar disk at small angular separations from a bright star.
  As far as possible, we would be extremely grateful if the observations
  could be performed under significantly better seeing conditions (<1",
  ideally 0.8") than the default 1.4" requirement.
  Thanks for your understanding.

Time-Critical Aspects

• Our observing run is composed of 3 pairs of OBs:
  
  - first pair:  HD141569_corono_Ks_1 and PSF_HD147550_corono_Ks_1
  - second pair: HD141569_corono_Ks_2 and PSF_HD147550_corono_Ks_2
  - third pair:  PSF_HD132230_corono_Ks_1 and HD141569_corono_Ks_3
  
  Each pair must be executed in a row and following the order indicated above,
  namely
  - first pair must start with the scientific target (HD141569) immediately followed
    by the reference star (HD147550) 
  - second pair : same as 1st pair
  - third pair must start with the reference star (HD132230) immediately followed
   by
    the scientific target star HD141569.
  
  This observing strategy ensures that both the scientific target and the reference
   star
  cover on the sky the same range of parallactic angles. This procedure minimizes
   the residuals
  during the reduction process.

Special Execution Requirements

• See General Description for constraints on the field of view orientation.
  See also Time-Critical Aspects.

Special Calibration Information

• Our observing run is composed of 3 pairs of OBs:
  
  - first pair:  HD141569_corono_Ks_1 and PSF_HD147550_corono_Ks_1
  - second pair: HD141569_corono_Ks_2 and PSF_HD147550_corono_Ks_2
  - third pair:  PSF_HD132230_corono_Ks_1 and HD141569_corono_Ks_3
  
  Each pair must be executed in a row and following the order indicated above,
  namely
  - first pair must start with the scientific target (HD141569) immediately followed
    by the reference star (HD147550) 
  - second pair : same as 1st pair
  - third pair must start with the reference star (HD132230) immediately followed
   by
    the scientific target star HD141569.
  
  This observing strategy ensures that both the scientific target and the reference
   star
  cover on the sky the same range of parallactic angles. This procedure minimizes
   the residuals
  during the reduction process.

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 ?

• 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 ?

• 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

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

• YES

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 ?

• N/A

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

• N/A

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