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INGRID tests to check repeatbility of the focus drive

Date: 22-Oct-2002   
Observers: SGR,AZ
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-Telescope fixed at elevation 90 deg.

-We used the script 'foctest.csh' to take 
 Hartmann tests after making several movements
 of the focus drive.

-Images are:

  Images     pstop  ifocus #movements
r546629.fit     kel -1200   calib1
r546630.fit     ker -1200   calib1
r546631.fit     ker -1000   calib2
r546632.fit     kel -1000   calib2
r546633.fit     kel -1000   5
r546634.fit     ker -1000   5
r546635.fit     ker -1000   11
r546636.fit     kel -1000   11
r546637.fit     kel -1000   20
r546638.fit     ker -1000   20
r546639.fit     ker -1000   1 -- ifocus datumed before exposure
r546640.fit     kel -1000   1

-reduction of images:


1. post - pre of the files

2. get coordinates of the holes (file:    holes.coords)
   Check that we have selcted all the holes:
   
  in>displ r546629pp.fits 1 
  in>field pinhole.coords "1,2" | tvmark 1 "STDIN" color=204

3. Use imcentroid to get acurate positions of the holes on
   each Hartmann image:

   e.g. imcentroid r546036pp.fits  "" holes.coords > r546036pp.imcentroid
   
   (see imcentroid.commands)

4. Use 'arregla.imcen' to read the output file from imcentroid and get 
   files file.imcen. These are the input for hartmann.pro

5. Results (after running 'hartmann.pro' for each pair of files):

   KEL      KER     IFOCUS # mov   y in origin     slope      elevation
r546629pp r546630pp -1200, 1 mov    3.2350887   -0.0029874030 90.0000
r546632pp r546631pp -1000, 2 mov    1.9930440   -0.0027806699 90.0000
r546633pp r546634pp -1000, 5 mov    2.0535895   -0.0027311408 90.0000
r546636pp r546635pp -1000, 11 mov   2.1364512   -0.0027976163 90.0000
r546637pp r546638pp -1000, 20 mov   2.1164848   -0.0028490374 90.0000
r546640pp r546639pp -1000, 1 mov    2.1275260   -0.0028213233 90.0000


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