README web version of /home/usg/OPS/MTS/readme_xml/readme_81026201

Principal Investigator Email Address

• jgroh@mpifr-bonn.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 2h59m54s

General Description

• Run B is a carryover from period 81, and the goal of the program is to
   obtain *spatially-resolved* spectra of Eta Carinae and its inner nebula during the
   periastron passage of the companion (2009 January 11 +- 1.3 days). Only a J-band
   finding chart is provided for Eta Car, since the target morphology is very similar
   in the K-band, i.e., a bright central star surrounded by an extended bipolar nebula
   (~16 arcsec). The CRIRES slit should be centered on the bright central star, and
   the PA should be 325 degrees (which does not correspond to the major axis of the
   nebula). A 1-sec exposure should be made in order to not saturate the spectrum from
   the central star. A large NDIT will be used to build up enough S/N.  Longer exposures
   of 45--60s, at offset positions from the star, will be made in order to trace the
   morphology of the wind-wind collision zone in the inner arcsecond. Each Eta Car
   OB should be immediately followed by the respective calibration OB.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• There are no other critical observing constraints other than those defined
   in each OB.

Time-Critical Aspects

• Dramatic changes in the line strengths and radial velocities are expected
   to occurr due to the periastron passage of a massive companion. The run B data will
   be directly compared to our pre-periastron data from 2007 and 2008 (run A), and
   the scientific results of our program will be maximized if run B is observed in
   the range 2008 December 25th until 2009 January 25. Therefore, we greatly appreciate
   if run B could be observed in this time interval.

Special Execution Requirements

• No special execution requirements.

Special Calibration Information

• For each grating setting, the calibration OB should follow the respective
   Eta Car OB in order to subtract the telluric lines satisfactorily.

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Do the README file and the instrument comments of the telluric stars
 OBs include the required S/N/pixel of the spectrum of the telluric star, its spectral
 type and allowed spectral range?

• YES

Do any OBs include wavelength or flatfield calibrations?

• YES

If you are observing Moving Targets, have you attached suitable ephemeris
 files to your OBs?

• N/A

If the slit viewer guide star is different from the target, are the RA
 and DEC offsets accurate to within 0.05 arcsec and do they take into account the
 relative proper motion between the two objects?

• N/A

If you have preferences which OBs should be executed first for objects
 at similar RA, did you make use of the User Priority field in the OBs?

• N/A