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Brazilian Tunable Filter Imager (BTFI) Preliminary Design Review (PDR) . BTFI Opto -Mechanics (Rene Laporte ) Version 1.0. USP-IAG Universidade de São Paulo 18-19th June 2008. FP P. K 0. FP P = High Resolution. K 1. FP I = Low Resolution. IF P. F 1. F 1 – iBTF (VPHG 1 )
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Brazilian Tunable Filter Imager(BTFI)Preliminary Design Review (PDR) BTFI Opto-Mechanics (Rene Laporte) Version 1.0 USP-IAG Universidade de São Paulo 18-19th June 2008
FPP K0 FPP = High Resolution K1 FPI = Low Resolution IFP F1 F1 – iBTF (VPHG1) simple rotation F2 F2 – iBTF (VPHG2) rotation + translation FPI E C IFI = Interference Filter - Image Plane IFI IFP = Interference Filter - Pupil Plane B A
BTFI on SAM Detectors ISB iBTF SAM IFI wheel Space envelope
SAM’s eye view SAM’s upper plate
Detectors BTFI iBTF module Handling gear ISB SAM
iBTF module (as built) z-stage VPHG1 • VPHG2 with • 40mm D-Gs • 2-by-2 mosaic
iBTF – 3 axes motors (as built) • VPHG1 • Rotation only • VPHG1 • Rotation • Translation
iBTF Grating mount(as built) D-G 2-by-2 mosaic (Ondax) on substrate Grating holder (individual) Grating mount (adjustable in roll)
IFI “filter” wheel – remotely operable(for IFs, B-B filters & masks) 6-position (in beam) Filter exchange position
FPI exchange mechanism FPP module Rails FPI dummy
IFP Filter wheel – remotely operable(for IFs & “Mexican” 4-way prism) IFs tilts up to <12 4 Ifs + Clear + “Mexican Hat”
IFP filter wheel module Module hinged to allow for manual filter exchange Drive mechanism
FPP exchange mechanism Rails FPP module FPP withdrawal mechanism (manual)
CryoTiger dewar Detector electronics Detector head
Flexure monitor system f/16.5 baffles f/16.5 beam Field lens Fibres from ISB calibration system Input focal surface (coincident with fibre outputs)