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Optical System Critical Design Review (CDR)

Optical System Critical Design Review (CDR). TIPS Presentation: Margaret Meixner. MIRI CDR Process. Hybrid ESA/NASA CDR: Oral presentations for panel Dec 6&7 (NASA style) Main focus is on month long review of MIRI data packet by expert panels who write and collect RIDs

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Optical System Critical Design Review (CDR)

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  1. Optical SystemCritical Design Review (CDR) TIPS Presentation: Margaret Meixner

  2. MIRI CDR Process • Hybrid ESA/NASA CDR: • Oral presentations for panel Dec 6&7 (NASA style) • Main focus is on month long review of MIRI data packet by expert panels who write and collect RIDs • Anyone can submit a RID for MIRI (yes that means you) by giving it to one of the panel or board members; Peter Stockman is on the board. • RIDs collected and sorted in January. • Disposition of RIDS presented to the board in February • This presentation provides a status of MIRI at the time of CDR.

  3. 1.7 arcmin 1.3 arcmin Imager - Optical Requirements (Wright) Requirements: • > 2 square arcmin field of view, with a 0.11 arcsecond pixel scale • Image Quality • > 58% of light within first dark ring of model telescope PSF • Strehl ratio > 85 % longward of 5.6 mm • Coronagraphy in 4 filter bands (see Design Doc. for details) • R=100 Spectroscopy Design: Simulated NIR JWST field (Myungshin Im 1998)

  4. Each channel’s field of view is sliced, dispersed and detected. Channel 1 (4.9 - 7.7 mm) Channel 2 (7.4 - 11.8 mm) Channel 3 (11.4 - 18.2 mm) Channel 4 (17.5 - 28.8 mm) Wavelength/Velocity Medium Resolution Spectrometer - Format (Wright) REQUIREMENT - Integral Field Spectroscopy with > 3 arcsec field of view from 5 to 28.5 µm. 10 arcseconds

  5. Collimator Grating Camera 1 FPA 1 IFU 1B Collimator Grating SWdichroic IFU 1A centre dichroic IFU 2A Collimator Grating IFU 2B LW dichroic Camera 2 FPA 2 Collimator Grating The MRS concept (Wells)

  6. MIRI MRS - Spectral Coverage (Glasse) • The MRS covers the 5 to 28 micron range in 12 sub-spectra Spectral Resolving Power FRD 2.5.1.2 How the spectra will appear on the MRS’s two detectors Wavelength [mm]

  7. MIRI MRS • Target Acquisition required for some cases • Selection of: • Grating wheel position: 1 of 3 sub-bands • Detector readout • Exposure time • Dithering/Mapping

  8. MIRI Optical System Modes

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