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- ;
- ; TO GET STARTED:
- ;
- ; Click on Run in the menu above. Then click on
- ; the Graph 1 window and try the Display Menu.
- ;
- ; Activate HELP for more Information
- ; In particular, read and follow the tutorial
- ; carefully. IRT is a very powerful tool,
- ; and like all such tools it takes a little
- ; time to master.
- ;
- ; Example -- Simple Newtonian Telescope
- ;
- ; set title for graphics
- _ti='Example - Spherical Aberration'
- ; point object at effectively infinity
- objp,0.,0.,1.e12,400,6328.
- ; circular pupil, random ray distribution
- pupcr,0.,50.
- ; displace origin 1000mm down
- disp,0,0,-1000.
- ; spherical mirror of radius 2000
- conic,0.,2000.
- mirror
- ; move origin back up
- disp,0,0,700.
- ; rotate coordinates 45 degrees about y axis
- rot,0,-45.,0
- ; flat diagonal mirror
- flat
- mirror
- ; rotate coordinates to follow reflected rays
- rot,0,-45.,0
- ; move origin to focal plane
- disp,0,0,-300.
- ; flat focal plane
- flat
- detector
- ; make spot plot
- spot
- oprof
- end
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