README web version of /home/usg/OPS/MTS/readme_xml/readme_60943200

Principal Investigator Email Address

• knilsson@eso.org

Estimated Total Execution Time (hours, including overheads)

• 3 hours

General Description

• This program is aimed at measuring the emission lines of a so-called
  Lyman-alpha blob at high redshift. Lyman-alpha blobs are large 
  clouds of hydrogen emitting light mainly in the Lyman-alpha line.
  The blob observed in this program is located at a redshift of 2.4
  and with these observations we aim to observe the Lyman-alpha line
  of the blob, as well as potential oxygen and Balmer lines in the
  near-infrared. 
  
  We wish to observe the blob in the LSS mode. The slit should have
  width 1.2 arcsec in VIS/NIR and 1.3 arcsec in UV. It should be tilted
  at an angle of 25 degrees clockwise compared to North-South, see also the 
  finding chart. The blob consists of a main component seen in the Finding 
  chart and a faint, extended part towards the south-east, not seen in the 
  Finding chart. For that reason the slit should be offset slightly from the
  main target and should center on R.A. 21 42 42.774, Dec. -44 30 12.03. 
  For the different arms, please note the following details:
  
  UV: Exp time 600 s., detector read-out 1x2, slow
  VIS: Exp time 600 s., detector read-out 1x2, slow
  NIR: Exp time 600 s.
  
  This target is not observable in the September SV run due to the moon constraints.

Waiver Requests

• A waiver request to allow two 1.5 hour OBs instead of three one hour OBs
   was submitted on 21 July with waiver ID 60.A-9432A.01. It was accepted.

Critical Observing Condition Constraints

• Sky clear, seeing 1.3, lunar illumination 0.5, moon distance 90 degrees.

Time-Critical Aspects

• Only observable in August SV run.

Special Execution Requirements

• N/A

Special Calibration Information

• N/A

ToO Information

• N/A

ToO Activators List

• N/A

Do all your OBs comply with the instrument-specific requirements listed
 on the instrument-specific Phase 2 web page ?

• YES

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 specified the S/N ratio at given wavelength in the User Comments
 field of each OB?

• 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