README web version of /home/usg/OPS/MTS/readme_xml/readme_78051001

Principal Investigator Email Address

• gchauvin@eso.org

Estimated Total Execution Time (hours, including overheads)

• 1.7

General Description

• Astrometric Monitoring of a close (100mas) binary system Twa22 to study
   proper and orbital motion. 
  This program is composed of 2 runs (A and B) corresponding to 2 different epochs
   of observation separated by at least one month.
  
  --------------------------------------------------------
  Sources		SpT	V	H	Rks
  Twa22		M5	13.8	8.2	Binary (100mas)
  GSC8056		M6V	14	9.6	PSF Calib
  Theta Ori C	*	5	5	Astrometric Calib	
  --------------------------------------------------------
  
  For each run, the observing sequence is composed of 4 OBs:  
  Two classical imaging OBs (Twa22_IMG + PSF_IMG) which must be executed back to back
   for PSF calibration.
  And one coronographic OB (Twa22_COROASTRO_Hs13) and one astrometric calibrator (CALASTRO_ThetaOri)
   which must be observed within ONE WEEK after the two classical imaging OBs.
  
  For the Astrometric Calibrator, please center carefully the field as indicated by
   the RED BOX. You may have to remove the Neutral Density (after the AO aquisition)
   to see the faint astrometric calibrators: T58, 39, 26, 57, 34 and 29.
  
  
  1- Twa22_IMG_Hs13 (20min)
  2- PSF_IMG_Hs13 (20min)
  3- Twa22_COROASTRO_Hs13 (40min)
  4- CALASTRO_ThetaOri (20min)
  
  For the SCIENCE observations (1-, 2- and 3-), please adjust DIT to stay within the
   1% linearity limit if necessary.
  
  !! Special daytime calibrations are required to determine the shift between the
   H+ND and H filters, with the S27 camera !! This can be done using the calibration
   lamp with the pinholes, with the same setup used during the night: S27, DCR, High
   Dynamics with the H filter and H+ND filter!!
  
  In case of problem, do not hesitate to contact the PI: gchauvin@eso.org (Off: 02
   464 3063 or Home:02 494 5198) 
  or C.Dumas if on the mountain. Thanks.

Waiver Requests

• none

Critical Observing Condition Constraints

• none

Time-Critical Aspects

• The coronographic OB (Twa22_COROASTRO_Hs27) and the astrometric calibrator
   (CALASTRO_ThetaOri) must be observed within ONE WEEK after the two classical imaging
   OBs. 
  
  The NACO Second epoch OBs 078.C-0510(B) must be executed at least one month after
   First epoch OBs 078.C-0510(A).

Special Execution Requirements

• none

Special Calibration Information

• The two classical imaging OBs (Twa22_IMG + PSF_IMG) must be executed back
   to back for PSF calibration.
  
  The coronographic OB (Twa22_COROASTRO_Hs27) and the astrometric calibrator (CALASTRO_ThetaOri)
   must be observed within ONE WEEK after the two classical imaging OBs.
  
  !! Special daytime calibrations are required to determine the shift between the
   H+ND and H filters, with the S27 camera !! This can be done using the calibration
   lamp with the pinholes, with the same setup used during the night: S27, DCR, High
   Dynamics with the H filter and H+ND filter!!

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 ?

• 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 ?

• YES

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 ?

• 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