Budget Budget Contingency/ Cost Risks Descope Options Kenneth Nordsieck University of Wisconsin Budget Contingency/ Cost Risks Descope Options Oct 17, 2001 SALT PFIS PDR Budget/ Summary

SALT PFIS PDR Budget/ Summary Bottom Line Base Dollars 3,645,947 3,942,697 2,426,501 734,661 484,786 2,351,162 810,000 Oct 17, 2001 SALT PFIS PDR Budget/ Summary

Comparison to Concept Proposal Increase is in UW (contractor) budget Unbudgeted items: slitmask factory; structure and mechanisms; travel Additional 2.5 manyrs: mechanical and software Base Dollars Oct 17, 2001 SALT PFIS PDR Budget/ Summary

SALT PFIS PDR Budget/ Summary Contingency Contingency not placed on Concept Proposal ROM (no basis) PDR budget contingency 15% on all purchased items, except CCD's and etalons (firm quotes) 3 months manpower in CDR phase and in Fabrication Phase. Would be applied by hiring help, if schedule is firm, or by stretching schedule, if it is not Suggest valuation at the baseline value, with increases within the contingency budget if necessary, approved by Project Scientist Possible cost savings transferred to contingency (eg CCD) Oct 17, 2001 SALT PFIS PDR Budget/ Summary

SALT PFIS PDR Budget/ Summary Descope Options Base Dollars Design Phase Beam size 150 mm -> 116 mm etalons -$21K optics -$25K - $75K redesign +$60K (6 weeks) Net +$14K - -$36: Save very little, if anything, with significant loss of resolution Field of View at camera (3 -> 2 chips) Chips -$70K (note: need to do this immediately!) Optics -$25K - -$50K redesign +$40K (4 weeks) Net -$55K to -$80K: Again, Save very little, with significant loss of resolution elements Oct 17, 2001 SALT PFIS PDR Budget/ Summary

SALT PFIS PDR Budget/ Summary Descope Options - Cont Base Dollars Fabrication Phase third etalon -$~120K quarterwave plate -$71K slitmask factory -$106K Total -$297K These purchases will be delayed as long as possible in case of contingency overrun. Could be used to replace contingency: "descope as you go" Commissioning Phase Fewer commissioned modes Transfer some modes to project Oct 17, 2001 SALT PFIS PDR Budget/ Summary

Summary Status Risk reassessment Kenneth Nordsieck University of Wisconsin Status Risk reassessment Oct 17, 2001 SALT PFIS PDR Budget/ Summary

SALT PFIS PDR Budget/ Summary Status PFIS on track to deliver SALT first light instrument competitive or superior to those on other large telescopes low - medium resolution multiobject spectroscopy double-etalon Fabry-Perot spectroscopy high-speed spectroscopy spectropolarimetry Oct 17, 2001 SALT PFIS PDR Budget/ Summary

SALT PFIS PDR Budget/ Summary To do.. Open ends to be resolved in next 6 weeks (scheduled system conceptual design final iteration) slitviewer proposal waveplate configuration resolution of mass property budget structure iteration to remove flexure trouble spots definition of interfaces Oct 17, 2001 SALT PFIS PDR Budget/ Summary

SALT PFIS PDR Budget/ Summary Risk Reassessment Optics complexity (technical, cost, schedule) Refractive Optics Low to medium Polarimetric Optics Medium. Cost cap NaCl elements (technical) Manufacturability: Low Structure (technical, cost, schedule) flexure: Low to medium weight: Low? articulation: Low mechanisms: Low to medium Oct 17, 2001 SALT PFIS PDR Budget/ Summary

SALT PFIS PDR Budget/ Summary Oct 17, 2001 SALT PFIS PDR Budget/ Summary