README web version of /home/usg/OPS/MTS/readme_xml/readme_83004400

Principal Investigator Email Address

• frederic.courbin@epfl.ch

Estimated Total Execution Time (hours, including overheads)

• 08h59

General Description

• This is a simple imaging program to image low redshift quasars that act
   as
  gravitational lenses on background emission line galaxies. 
  
  We have chosen the exposure times to avoid saturation, assuming a seeing of 
  0.5 arcsec. If the seeing is drastically better, please decrease the exp 
  times to avoid saturation, even at the cost of more overheads to be charged to the
   program. 
  
  OBs with names starting with Cand_01, Cand_09, Cand_12 have higher priority
  
  We use either the R or the I filter depending on the redshift of the background
   object. For the 3 objects with the highest priority we also include short V-band
   images in order to remove the QSO host galaxy from the other bands. These will be
   very important for the program BUT will be useful only provided deep R or I images
   are also available. V alone does not make sense.
  
  If possible at all, try to finish all exp time and all filters for a given object
   
  before starting the next.
  
  Good seeing and sensitivity are essential. Photometric sky is not. We can afford
   
  a bit of thin cirrus provided the total throughput is not degraded too much (10-15%
  absorption is ok).

Waiver Requests

• A waiver was submitted and accepted
  
  383.A-0044A.01.WAV
  
  in order to use the std collimator + 1x1 binning

Critical Observing Condition Constraints

• Nothing special

Time-Critical Aspects

• Nothing special

Special Execution Requirements

• Our OBs have more offsets than exposures, due to fine tunning of total
   exp time.
  
  This is not a problem. Only part of the offset pattern will be covered. Still,
  fringes can be removed accurately since we take almost always > 10 exposures
  per OB.

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

• ---(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 ?

• 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

If you have prepared your finding charts with tools other than FIMS,
 do they comply with the specifications on the FORS1 Phase 2 web page ?

• N/A