Prime Focus Imaging Spectrograph

Transcription

1 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 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 May 17, 2004 SSWG 1 Lens Optics field flattener rework for dewar seal NaCl triplet in assembly 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 May 17, 2004 SSWG 2

2 Collimator & Camera Assembly Main Group: including solgel and NaCl Field Lens Doublet Final Doublet Collimator Camera Barrel May 17, 2004 SSWG 3 Other Optics Delivered 3000 l/mm VPH Grating 100 mm superachromatic halfwave plate Slitviewer Optics Not delivered (very late): Etalons; Beamsplitter May 17, 2004 SSWG 4

3 CCD Detector Field Flattener on cryostat May 17, 2004 SSWG 5 Detector Engineering First Light Full Image: M83 M 83 May 17, 2004 SSWG 6

4 Structure/ Mechanisms Grating Server Collimator Optics Camera Detector Dewar Slit Mask Server Filter Server Waveplate Mechanism Articulation Rail May 17, 2004 SSWG Open Truss Structure 7 Fabry-Perot Etalons Structure Welded invar structure: Welding, heat treatment completed In finish machining Due end of May (4 months late) Dolly; test fixture ready Pacing item May 17, 2004 SSWG 8

5 Mechanisms Slitmask Server Waveplate Rotator May 17, 2004 SSWG 9 Mechanisms II 162 mm shutter Filter Server Grating Server Mechanism Effort: about 4 months late May 17, 2004 SSWG 10

6 Item CaF2 Blanks Fused Silica Blanks NaCl Blanks Fused Quartz Blanks Lens Fabasphere spheres MgF2/ Solgel coatings Multilayer Coatings Waveplates Beamsplitter Budget: Procurement Status PDR Estimate $98,116 $168,714 $120,000 $44,100 Now $120,260 $9975 $10,020 $13,650 $33,000 $26,935 Janos 8 wk Cleveland $55,918 Crystal 8 wk Spectrum $21,261 Thin Films 6 wk $101,466 $53,100 Low bid Deliv Company ery Oken Dynasil Hilger Oken Coastal Halle Karl Lambrecht 4 wk 6 wk 75 d 20 wk 6 mo 30 wk Bicron Corning, Oken Rubicon Heraeus TORC, Tinsley Coastal, TORC, HJOL RMI none Reynard Status, including $32,800 in spares, including 1 spare, including 4 replacements Awarded May 17, 2004 SSWG 11 80d Other bidders Item VPH Substrates VPH Coatings VPH Fabrication SR Grating Color Filters Color Filter Coatings Slitviewer Optics Slitmask Cutter PDR Estimate $30,000 $10,000 $120,000 Procurement Status - II Now Company $24,950 Wasatch $15,580 Omega Spectrum $5,875 Thin Films $3,247 TORC $124,599 US Laser Low bid $11,850 United Lens $7,100 OptoSigma $8,696 Richardson deliv 4 wk 8 wk 10 wk 14 wk 4 wk 6 wk 4 mo HJOL, Coastal Spectrum Thin Films CSL, KOSI Zolotech Barr, Custom Scientific OptoSigma Coastal, HJOL, Edmund, Zygo LPKF, ART Awarded Awarded, 1 of 5 received Awarded Awarded Total $590,930 $647,482 May 17, 2004 SSWG d Other bidders Status

7 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 May 17, 2004 SSWG 13 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 CaF 2 spares -$25K? -$25K? Projected Total $208K? ~$30K over cap with SAAO Forex ~$30K under without May 17, 2004 SSWG 14

8 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 May 17, 2004 SSWG 15 Integration Schedule May Jun 2004 Jul Aug Structure Integration Prepara Dolly, Crane into Ass'y Ar Structure onto Dolly Mirror Str Trial Ass'y Collimator Integration Main Grp mnt & pin Fld Lens/ Guider mnt trial Set up Alignment Referen Mirror str Inst & measur Fld Lens/ Guider mnt insta Mirror Install & Align Doublet Install & Align Focus Doublet Shutter I&T Slitmask I&T Waveplate I&T Etalon I&T Camera Subassembly Integr Grating/ Filter/ Artic Reass Articulation Pretest Install camera Focus Test Grating Test Filter Test Beam Splitter I&T Camera Subassembly Install Camera Align Detector I&T Articulation Final Test Grating Final Test May 17, 2004 SSWG 16

9 PFIS Testing Image Quality Test Focus Range Test Detector Pixel Scale Test Flexure Test Stray Light Test Resolution Test Central Wavelength Prec Etalon Bullseye Test Polarimetric Efficiency Waveplate Position e Angle Polarimetric Optics Trans Phase 5 - Installation & Com Pack Ship Unpack Assemble in Cape Town Acceptance Testing Ship to Sutherland Arrival at Sutherland Basic Calibrations Science Calibrations Testing and Commissioning Schedule Aug Sep Oct Nov Dec Jan This part of schedule needs to be detailed... May 17, 2004 SSWG 17