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JWST Status

JWST Status. JWST Mission Status. Across the whole observatory there is now A lot of FM hardware in production Many good test results at observatory subassembly level (the other instruments, mirror backplane, ISIM structure.....) Some not so good test results and “issues in work”

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JWST Status

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  1. JWST Status

  2. JWST Mission Status • Across the whole observatory there is now • A lot of FM hardware in production • Many good test results at observatory subassembly level (the other instruments, mirror backplane, ISIM structure.....) • Some not so good test results and “issues in work” • So much like us • Overall schedule to launch date is still being held • Test programme is starting to stabilise • Following successful Non-Advocate Review NASA is fully committed to JWST • There is now a very large team at both GSFC and NGST • Peak years of engineering effort and cost are now and next year !. • First Flight Mirrors are about to start testing (after polishing)

  3. Technical Areas Currently Getting a Lot of Attention • Sunshade deployment • A special review is planned to ensure problems have been solved (tightness of edges of sunshade affect efficiency) • Alignment of instruments to the (ISIM and) telescope and of telescope itself • A lot of work in this area, extremely tight tolerances (microns over meters) • Detailed review of OGSE about to start. • MIRI pupil lens will be used in for in-flight measurement of pupil shear to eliminate a possible redundancy in the alignment algorithms • Cooler Heat Loads Margins • End to end review of current margin in all areas • Electrical Power budget for mission • more power to the Cooler ;-) (among many changes) • Test Plans and Verification at Observatory Level • Really big focus across the board on pushing every schedule in order to get the Observatory (FM) into end-end cryo-test as soon as possible.

  4. Operations Progress and Planning (wrt MIRI) • MIRI Proposal Planning System Template Definitions • Draft specifications are in work • Cross Instrument Calibration Working Group Set up • Karl Gordon is MIRI member, looking for commonalities between instruments (dark current subtraction). • Operations Script Development is making good progress • Plan to test at RAL at the end of VM2

  5. JWST Science Working Group Activities • A specialist working group has been set up to consider how we can best observe planetary transits • Identify if special observatory modes are needed. • A study is on-going to write a paper explaining the impact to science if the telescope image quality specification were to be relaxed (eg diffraction limited at 3um) • Very bad impacts for NIRCAM and NIRSPEC sensitivity • At the moment this is a “just in case” activity • In case the mirror cryo-polish cycles are too difficult (impossible) • There is no mission plan to actually do this. • Plan is to make a serious announcement to community of process for selecting first observations at the AAS meeting in January 2009.

  6. Partners Workshop

  7. Partners Workshop, ITAR Free Day, Monday 13th October • Hosted by NIRSPEC in Munich , 9am- 5:30pm • Program Progress & Status (Durning) • JWST Science Objectives (Greenhouse) • JWST Mission Overview, Observatory Overview and Mission PDR Summary (Menzel & Arenberg) • OTE and Mirror Status (Feinberg & Texter) • ISIM Overview (Dunn) LUNCH • ISIM Electronics Compartment (Rashford) • Instrument Status : NIRCAM, NIRSPEC, FGS-TF, MIRI, Cooler • Observatory Verification (Lynch & Arenberg) • Integration and Launch Campaign Flow (Diaz & Jones) • Ground Segment & Operations(Johns & Sonneborn) • Public Lecture in Deutsches Museum, and full scale model viewing in evening • We need to get GSFC a list of MIRI participants by end of this week

  8. Other Sessions of Interest to MIRI • MIRI Science Team Meeting , Tuesday Morning • Co-PI splinter will discuss • Wed, 15th Mostly ITAR restricted technical discussions • Variouis Optical Alignment and Test working groups • Martyn, Maurice, will be there see also Martyns talk • Science Instrument Coordination with Observatory V&V team • PIs have been invited, likely to be followed by working groups and telecons • Cooler Heat Load Margins • Paul will be there, (& ESA) see also in Bryans talk • Various management discussions • SITS spares for FM testing for example • Thurs, 16th - more ITAR ! • ISIM Integration and Test, and in particular Operations products and Data storage during test • We want STScI archive in place and useable in time !!!!

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