1 / 17

Prime Focus Imaging Spectrograph Status

Prime Focus Imaging Spectrograph Status. All lenses figured and coated; collimator & camera in assembly Slitmask, waveplate, shutter, grating, articulation, filter mechanisms wired and tested Structure in final machining at Rutgers CCD detector delivery from SAAO this week

quade
Download Presentation

Prime Focus Imaging Spectrograph Status

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Prime Focus Imaging SpectrographStatus • All lenses figured and coated; collimator & camera in assembly • Slitmask, waveplate, shutter, grating, articulation, filter mechanisms wired and tested • Structure in final machining at Rutgers • CCD detector delivery from SAAO this week • VPH gratings shipping; beamsplitter due next month • Control system electronics boxes tested • Mechanism S/W coded/ tested; PI tool in progress • With 100% major purchases received or awarded, use of budget reserve is 99% • Concerns: schedule. Arrival at Sutherland slipped to ~15 Dec SSWG

  2. field flattener rework for dewar seal NaCl triplet in assembly Lens Optics • Collimator- problems with clean room; NaCl lens assembly. Delivery late this month (4 months late). Pacing item. • Camera- delivery late June • Detector- delivery this week (4 months late). Have 1 month for S/W integration SSWG

  3. Camera Barrel Collimator & Camera Assembly Main Group: including solgel and NaCl Field Lens Doublet Final Doublet Collimator SSWG

  4. 100 mm superachromatic halfwave plate Slitviewer Optics Other Optics Delivered 3000 l/mm VPH Grating Not delivered (very late): Etalons; Beamsplitter SSWG

  5. CCD Detector Field Flattener on cryostat SSWG

  6. Detector Engineering First Light Full Image: M83 M 83 SSWG

  7. Structure/ Mechanisms Grating Server Collimator Optics Camera Detector Dewar Slit Mask Server Waveplate Mechanism Filter Server Articulation Rail Open Truss Structure SSWG Fabry-Perot Etalons

  8. Structure Welded invar structure: Welding, heat treatment completed In finish machining Due end of May (4 months late) Dolly; test fixture ready Pacing item SSWG

  9. Mechanisms Slitmask Server Waveplate Rotator SSWG

  10. Mechanisms – II 162 mm shutter Grating Server Mechanism Effort: about 4 months late Filter Server SSWG

  11. Budget: Procurement Status SSWG

  12. Procurement Status - II SSWG

  13. Budget: Cost-to-Completion • With 100% of major purchased equipment received or awarded, have used 99% of budgeted reserve • $55K of CTC is SAAO foreign exchange losses; use of reserve would be 92% if excluded SSWG

  14. Budget: Deltas • Positive deltas (since last meeting/ expected) Tot • Optics and Invar actual cost overrun $52K • Machining underestimate $27K • Optomechanical (esp beamsplitter) $23K • Schedule stretchout $86K • SAAO labor ForEx losses $30K $218K • Schedule stretchout $45K? • Flattener rework and slitviewer mounting $10K? $55K? • Negative Deltas • Mechanism/ control system purchases -$21K • Dolly Design -$19K -$40K • Resale of CaF2 spares -$25K? -$25K? Projected Total $208K? ~$30K over cap with SAAO Forex ~$30K under without SSWG

  15. Concern: Schedule • Subsystem deliveries ~ 4 months late • Used remaining schedule slack; parallel integration schedule to recover ~1.5 months • Integration & testing phase manpower: graduate student, postdoc (UW contribution) • Uncertain test phase schedule: how much needs to be done before shipping? • Ship 4 Nov, 2004 • Arrive Sutherland 15 Dec, 2004 • Uncertain commissioning schedule • telescope commissioning • sky availability of planned targets SSWG

  16. Integration Schedule SSWG

  17. Testing and Commissioning Schedule • This part of schedule needs to be detailed... SSWG

More Related