README web version of /home/usg/OPS/MTS/readme_xml/readme_83045700

Principal Investigator Email Address

• jarle@strw.leidenuniv.nl

Estimated Total Execution Time (hours, including overheads)

• 19 (16.6 for nonAO)

General Description

• The goal of this observing run is to obtain SINFONI observations of the
   brightest Lyman break galaxy in the sky, the 8 o'clock arc.
  The system is gravitationally lensed by a foreground elliptical galaxy and is split
   in four but the three brightest images are the main focus of the observation although
   the orientation of the instrument has been chosen to also include the fourth image
   just south of the elliptical. 
  
  As can be seen on the finding chart the images are located along an arc just north
   of the elliptical. The third finding chart shows a rotated view which should correspond
   to the view on the detector. The center is indicated by the green cross and is the
   Target in the OBs as well as having its RA & DEC on the image. The position
   of the elliptical is also indicated along with its photometry as derived from 2MASS
   images (quite noisy). 
  
  I do not have sufficient continuum NIR data for the arc to state whether it should
   be visible in the acquistion images or not but I chose a slightly longer than necessary
   DIT for the elliptical in the hope that it would appear.
  
  Note that I have placed the OBs corresponding to the laserAO assisted observations
   in the subfolder LGS - as described in the Special execution requirements, these
   are to be attempted first, only if there are perisistent problems with the laser
   will the nonAO runs be inserted.

Waiver Requests

• A waiver request was submitted to request OBs with duration longer than
   1 hour.
  
  Submission date of waiver request: 20/1/2009  [USD-ID: USD-26815]
  Acceptance date of waiver request: 21/1/2009

Critical Observing Condition Constraints

• To get a good AO correction we need good seeing conditions. Due to the
   additional constraints on the LGS use we have decided to relax the requirement from
   our proposal (0.6") to 0.7" for J where the Strehl would anyway be rather poor.
   We still keep our 0.6" constraint for H & K to be able to get high resolution
   emission line maps.

Time-Critical Aspects

• No time-critical aspects

Special Execution Requirements

• We would give preference to the H-band, J-band and K-band observations
   
  in that order.
  
  If there is a problem with the laser we have also provided OBs for seeing limited
   operation according to run A/alt in the proposal. The agreement with the user support
   is the following:
  
       By the end of Phase-2 (February 5th), please submit your OBs for both LGS and
   noAO observations.
        
        We will then put your LGS OBs in the observation queue and try to observe
   them
        until May 15th.
        
        At that point you should tell us which of the following options you would
   like to adopt:
        
        1) continue to have in the queue for the rest of P83 the LGS OBs
        
        2) substitute the LGS OBS that have not yet been observed with their equivalents
   in noAO mode for the rest of P83

Special Calibration Information

• ---(Empty)---

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

• SDSS

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 ?

• 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 ?

• 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

Did you indicate the magnitude of the brightest object in the field in
 each SINFONI OB?

• N/A

If you are using the AO: Did you indicate for every OB the magnitude
 of the guide star, and its distance to the target (if any)?

• YES

If you submitted OBs for standard stars, did you use the provided StandardStar
 templates?

• N/A

If you are using a specific offset pattern or position angle: did you
 check carefully the definition in the manual?

• YES

Did you make really sure that none of your OBs ever saturates the detector?

• YES

If you are using the AO: did you enter the correct Strehl Ratio (on-axis,
 K-band) AND the seeing value in the constraint set?

• YES