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FTS-2 Optical Modelling
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SCUBA-2 feed optics ZEMAX model, up to the FTS: SCUBA-2_optics.zip
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Zemax model of the FTS-2 Optics as of March 2007: IFTS_draft_6_9.zip
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Optical prescription for FTS-2 optics: FTS-2_prescription.txt
Note that this is just for one 'side' of the FTS.
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INO report for the FTS-2 optical design: INO 060140 R-11c.pdf (28 MB)
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Reverse raytracing was done to determine the actual view from the SCUBA-2 arrays with the FTS in the beam.
The following animations show the spillover (on one side of the interferometer)
as a function of mirror travel from -200 to 200 mm and back again. Refer to the INO report for details
of the reverse raytracing.
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Spillover effects in the entire interferometer: spillover.avi (6 MB)
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Spillover effects on the input pickoff mirror: PO1.gif
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Spillover effects on the beamsplitter: BS.gif
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Spillover effects on mirror FM1_3: FM1_3.gif
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FTS-2 Port Optical Coordinates: SC2/FTS/OPT/002
Please send any comments or questions to 
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SCUBA-2 FTS Group
Physics Department
University of Lethbridge
4401 University Drive
Lethbridge, Alberta
T1K 3M4
Phone: (403) 329-2771
Fax: (403) 329-2057
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