1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

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

8. 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

9. 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

10. 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

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