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Brazilian Tunable Filter Imager (BTFI) Preliminary Design Review (PDR) - USP-IAG

This document outlines the preliminary design review of the Brazilian Tunable Filter Imager (BTFI), covering opto-mechanics, resolution capabilities, interference filter configurations, and detector systems. It includes details on the BTFI structure, filters, detector modules, and exchange mechanisms. The document also discusses the BTFI's connection to SAM detectors and its handling gear. Presented at the University of São Paulo in June 2008.

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Brazilian Tunable Filter Imager (BTFI) Preliminary Design Review (PDR) - USP-IAG

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  1. 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

  2. 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

  3. BTFI on SAM Detectors ISB iBTF SAM IFI wheel Space envelope

  4. SAM’s eye view SAM’s upper plate

  5. Detectors BTFI iBTF module Handling gear ISB SAM

  6. SAM @ SOAR HQ (La Serena)

  7. iBTF module (as built) z-stage VPHG1 • VPHG2 with • 40mm D-Gs • 2-by-2 mosaic

  8. iBTF – 3 axes motors (as built) • VPHG1 • Rotation only • VPHG1 • Rotation • Translation

  9. iBTF “prototype” @ LNA

  10. iBTF Grating mount(as built) D-G 2-by-2 mosaic (Ondax) on substrate Grating holder (individual) Grating mount (adjustable in roll)

  11. IFI “filter” wheel – remotely operable(for IFs, B-B filters & masks) 6-position (in beam) Filter exchange position

  12. IFI retraction & filterreplacement

  13. FPI exchange mechanism FPP module Rails FPI dummy

  14. IFP Filter wheel – remotely operable(for IFs & “Mexican” 4-way prism) IFs tilts up to <12 4 Ifs + Clear + “Mexican Hat”

  15. IFP filter wheel module Module hinged to allow for manual filter exchange Drive mechanism

  16. FPP exchange mechanism Rails FPP module FPP withdrawal mechanism (manual)

  17. FPP + IFP assembly

  18. IFP filter exchange

  19. CryoTiger dewar Detector electronics Detector head

  20. 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)

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