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2. Sembach - 19 September 2002 Slide 2 of 8 Overview   New Instrument Scientist (Scott Friedman)   STScI ground system development on schedule   Instrument integrated, in alignment at Ball   SI Environmental (Thermal-Vac): January/March 2003   SI delivery to GSFC: Late March 2003   Launch: April 2004 – – SM4 – – replace COSTAR

3. Sembach - 19 September 2002 Slide 3 of 8 COS Instrument Activities   Science instrument news since last TIPS presentation (June ‘02) – – FUV flight detector (with new QE grid) qualified, installed and aligned in instrument – – Fully integrated instrument currently undergoing alignment at Ball > > Gaseous N 2 purge > > Light passed through both NUV and FUV optical paths > > Initial “rough” alignment of all optics is excellent – – Fine alignment will begin soon > > Problem noted with RAS/Cal chief ray alignment > > ABA to be used to calibrate and reset RAS/Cal – – FUV spare detector being assembled > > Mechanical assemblies (door, actuators, etc), QE grid installed > > Final QE measurement in mid-October

4. Sembach - 19 September 2002 Slide 4 of 8 COS Instrument Activities   SI news (continued) – – Optic select mechanism (OSM) life test unit undergoing bench testing > > Determine OSM repeatability and stability properties > > Necessary for FP-POS (FP-SPLIT) timing and auto-wavecal usage – – Primary D 2 lamp in cal-platform failed during pre-alignment platform random vibration / sine burst testing > > Defective lamp, problem understood, replacement lamp to be vibe tested and installed after the N 2 alignment testing – – Thermal controller set point issue > > Lower than the expected NUV MAMA survivability temperature > > Important only in worst-case scenario (extended HST safing / low- power with several additional problems)

5. Sembach - 19 September 2002 Slide 5 of 8 STScI Integrated Scheduling System   Phase 5 development completed – – Auto-wavecals completed – – All primary science / calibration exposure development is now complete   Phase 6 development is in progress – – Bright object protection target screening document drafted, circulated > > Instrument Science Report to be filed (Leitherer) – – Initial preparations for SMOV begun > > Discussions initiated with IDT > > Meeting at STScI next week (called by Carl Biagetti)

6. Sembach - 19 September 2002 Slide 6 of 8 COS Phase Development Plan (Rev 6, 10/26/01) Phase 1 (1/1/00 – 6/30/00) vMacro Development vReconfigurations Phase 2 (7/1/00 – 12/31/00) vNUV Timetag Mode + Darks vFUV Timetag Mode + Darks Phase 3 (1/1/01 – 6/30/01) vFUV & NUV Accumulation Science Exposures vFUV & NUV Target Acquisition Exposures vFUV & NUV Target Peakup Exposures Phase 4 (7/1/01 – 12/31/01) vAperture Alignment Exposures vOSM1 Focus Alignment Exposures vOSM1 Rotation Alignment Exposures vOSM2 Rotation Alignment Exposures vFUV & NUV FP Split Exposures Phase 5 (1/1/02 – 6/30/02) vFUV & NUV GO Wavelength Calibration Exposures vFUV & NUV Flat Field Lamp Calibration Exposures vFUV & NUV Automatic Wavelength Calibration Exposures vSAA Contours Phase 6 (7/1/02 – 12/31/02) vSMGT Preparations vSMOV Special Commanding vFUV & NUV Anomalous Recovery vFUV & NUV Initial Turn-on vFUV & NUV BOP Target Screening Phase 7 (1/1/03 – 6/30/03) vFUV & NUV Lifetime Adjustments vCoordinated Parallels

7. Sembach - 19 September 2002 Slide 7 of 8 COS “Back-End” Activities  COS Pipeline (CALCOS) – – Most modules are now complete – – Spectral merging procedures for FP-POS positions in progress – – Full testing to occur this fall on integrated SI data – – Draft of ICD-47 now exists (P. Hodge) and is being reviewed  COS Header Keywords – – Standard header keyword selections/definitions for science and ACQ exposures completed – – Established COS association requirements

8. Sembach - 19 September 2002 Slide 8 of 8 COS User Support Development  COS mini-handbook – – Provides observers with basic information about instrument capabilities available in Cycle 13 – – Finalized with revised FUV detector QE estimates (October distribution)  COS exposure time calculator – – Spectroscopic ETC requirements revisited (Astronomer Proposal Tools environment) – – COS implementation to occur over next 6 months