README web version of /home/usg/OPS/MTS/readme_xml/readme_76047700

Principal Investigator Email Address

• mjm@astro.ex.ac.uk

Estimated Total Execution Time (hours, including overheads)

• 2.0

General Description

• This is a simple programme involving direct imaging of the young stellar
  jet HH212 with ISAAC through the narrow-band H2 filter at 2.13 microns.
  The jet is being monitored over several years to measure proper motions:
  this is the final (whoopee!) epoch in a six epoch (five year) project.
  
  Three OBs are to be executed, each taking approximately 40 minutes of
  elapsed time. The main difference between the three OBs is a slightly
  (~5 arcsec) offset starting position.
  
  IMPORTANT: To ensure good sky subtraction, the 3 OBs should be executed
  sequentially, on the same night. Experience with this program shows this
  yields the best results.
  
  Each OB starts with a simple preset acquisition to the starting position,
  which is in each case at or near to knot NK7, roughly 25 arcsec NE of the
  nominal jet centre. From that position, 3 x 1 minute images are taken at 
  each of 10 positions. The 1st and 5th of these are roughly 1 ISAAC field
  away from the jet in blank sky. The remaining 8 are on the jet, 4 on the
  upper half, 4 on the lower half.
  
  The associated finding chart shows an H2 image of the HH212 jet taken with
  the wide-field Omega-Prime camera on Calar Alto. The smaller ISAAC 
  field-of-view is superimposed at the two basic positions used to cover
  the upper and lower halves of the jet: all other positions on the jet are 
  relatively close (+/- 20 arcsec in RA) to those starting positions, while 
  the 2 sky frames in each OB are roughly 150 arcsec E and W from the jet.
  
  Only one finding chart has been submitted, since all three OBs cover
  almost exactly the same region, with just a slightly offset starting 
  position as described above.

Waiver Requests

• None. No stars in the field are brighter than of K~14 mag, and thus no
  violations of the ISAAC bright limit will occur.

Critical Observing Condition Constraints

• Excellent seeing (0.4 arcsec FWHM or better) is required for this programme
   
  and was approved by the OPC. The better the seeing, the smaller the scale 
  on which we will be able to determine proper motions within the jet.
  
  Clear conditions are required, but not photometric. 
  
  No particularly strong requirements are placed on lunar illumination or 
  distance of the moon from the target.

Time-Critical Aspects

• None

Special Execution Requirements

• None

Special Calibration Information

• None. No special calibrations are required, since we will be able to flux
  calibrate the data via bootstrapping with respect to existing flux calibrated
  data we have for the source (Zinnecker, McCaughrean, & Rayner 1998, Nature).

ToO Information

• None

ToO Activators List

• N/A

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• None

Source(s) of Pre-imaging

• ---(Empty)---

Pre-imaging sources not listed above

• Calar Alto 3.5m

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 ?

• 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 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

If you are doing spectroscopy, did you draw the slit on the Finding Charts
 ?

• N/A

Did you enter the magnitude of the brightest star in the field-of-view
 in each OB ?

• N/A

If you use the MoveToPixel acquisition, have you given clear instructions
 on the FC and in the OB comment section as to how the field should be centered ?

• N/A