Keyes – 1 February 2000 : Slide 1 of 6 COS Monthly Status Review v OP-01 updates and revisions – STScI and IDT schedule and agenda for continuing COWG meetings to review OP-01 sections required for Phase 1 development (completion by 15 Feb 2000) > reviews completed 1.0 Instrument Overview1.0 Instrument Overview 4.1 FUV detector operation (BOP deferred)4.1 FUV detector operation (BOP deferred) 5.3 Science Observations.5.3 Science Observations. 4.2 NUV detector operation (1/27)4.2 NUV detector operation (1/27) > upcoming reviews of remaining sections 2.1 Instrument Mechanisms : 2/3 and following.2.1 Instrument Mechanisms : 2/3 and following. 3. Electronics and Flight Software :3. Electronics and Flight Software :

Keyes – 1 February 2000 : Slide 2 of 6 COS Monthly Status Review v Detailed requirements and deliverables schedule established for STScI Phase 1 Scheduling System development (Integrated Schedule) – primary requirements deliverable: OP-01 due 15 Feb 2000 – end-to-end testing in Phase 1 as feasible > test proposals will exercise front-end capabilities (proposal instructions, proposal generation, scheduling, commanding) – Revised phase 1 will support only TIME-TAG science observations for the FUV and NUV detectors > NOTE: the primary science operating mode comprises Phase 1 – Content of other phases adjusted to accommodate moving of target acquisition from phase 1 to phase 2 (see next 2 slides)

Keyes – 1 February 2000 : Slide 3 of 6 COS Monthly Status Review Ground System Phased Development (Rev 1) v Phase 1 (2/15/00 - 7/1/00) – – FUV/ NUV Time-Tag Science Exposures > > Data buffer management > > FUV bright object protection > > Primary science aperture > > Bright object aperture > > Fixed subarrays based on aperture v Phase 2 (7/1/00 - 1/1/01) – – FUV/ NUV Wavelength Cal. Exposures – – FUV/ NUV Flat Field Lamp Cal. Exp. – – FUV/ NUV Dark Calibration Exposures – – FUV/ NUV Target Acquisition Exp. > > Data buffer management > > Fixed subarrays based on aperture – – FUV/ NUV ACQ Dispersion Peakup > > Data buffer management > > Fixed subarrays based on aperture – – FUV/ NUV ACQ Cross-Dispersion Pkup > > Data buffer management > > Fixed subarrays based on aperture

Keyes – 1 February 2000 : Slide 4 of 6 COS Monthly Status Review Ground System Phased Development (Rev 1) v Phase 3 (1/1/01 - 7/1/01) – – FUV / NUV Automatic Wavelength Calibration Exposures – – FUV / NUV FP Split Exposures – – FUV / NUV Accumulation Science Exposures > > Data buffer management > > Doppler correction > > No subarrays v Phase 4 (7/1/01 – 1/1/02) – – Aperture Alignment Exposures – – OSM1 Focus Alignment Exposures – – OSM1 Rotation Alignment Exposures – – OSM2 Rotation Alignment Exposures – – FUV Single Segment Exposures – – FUV / NUV Flux Distribution – – FUV / NUV BOP Target Screening – – FUV / NUV initial detector turn-on – – FUV / NUV anomalous recovery

Keyes – 1 February 2000 : Slide 5 of 6 COS Monthly Status Review v STScI COS Team News – STScI Servicing Mission Office (SMO) now New Instruments & Servicing Department (NISD) – Melissa McGrath hired as new COS Instrument Scientist – Ralph Bohlin to lead COS Calibration Working Group v STScI is reviewing COS IDT Target Acquisition Analysis (TAACOS) requirements document – defines appropriate modeling to confirm acquisition schemes – target acquisition methodology must be confirmed by July 2000 > affects early Phase 2 scheduling system development activity

Keyes – 1 February 2000 : Slide 6 of 6 COS Monthly Status Review v Membership and charter of the COS Calibration Working Group established – Primary members are Ralph Bohlin and Tony Keyes (STScI), Ken Brownsberger (IDT/CU), John Vallerga (UCB), Dennis Ebbets (IDT/Ball), and Ed Murphy (FUSE/JHU) – initial CALWG meeting scheduled for 8 February 2000 > charter issued > science keyword definition (IDT deliverable by 1 Mar 2000 per MOU) > calibration overview > calibration code re-use review > define calibration requirements & techniques (AV-03)