SPACE TELESCOPE SCIENCE INSTITUTE Operated for NASA by AURA TIPS Cosmic Origins Spectrograph 20 September 2001

TIPS: COS Status - Keyes - 20 September 2001 Slide 2 of 10 Agenda  Overview  Instrument Activities and Status  STScI Ground System Activities – “Back-end” (Pipeline, Archive) – “Front-end” (Scheduling System)

TIPS: COS Status - Keyes - 20 September 2001 Slide 3 of 10 COS Overview   Ken Sembach: new COS Instrument Scientist in NISD   FUV flight detector now at Ball – – flight spare detector (FUV02) undergoing tests at UCB   SI Environmental (Thermal-Vac): fall 2002   Launch: January 2004 – – SM4 – – replace COSTAR

TIPS: COS Status - Keyes - 20 September 2001 Slide 4 of 10 COS Instrument Activities  Flight detectors for both channels meet or exceed performance requirements (QE, resolution, flatfields)  All FUV gratings (G130M, G160M, G140L) are flight-acceptable  Combined throughput for all FUV modes well above spec  FUV backup door mechanism re-work in fabrication; test in Oct  Initial FUV detector alignment activities; RASCAL in early Oct  NUV gratings for G185M, G225M, and G285M are below spec in absolute efficiency (worst-cases vary from 44-76% of spec)  NUV G230L awaiting testing – different design than M modes  TA1 mirror delivered and within spec  FSW enabling MEB functional tests and detector electronics (science exposures) to be installed on ops bench ~Oct 10

TIPS: COS Status - Keyes - 20 September 2001 Slide 5 of 10 NUV Grating Efficiencies --- graphic courtesy of COS IDT

TIPS: COS Status - Keyes - 20 September 2001 Slide 6 of 10 COS Instrument Activities  NUV Gratings Status – G185M: candidate fix in-hand; will be tested in October > If works; proceed to fabricate new replica grating > If unsuccessful; use present G225M in G185 spectral region Resolution reduced to ~16,000 (from 20,000)Resolution reduced to ~16,000 (from 20,000) Increased spectral rangeIncreased spectral range – G225M: > if G185M procedure works; apply to G225M process, as well > If unsuccessful; contract has been let for mechanically-ruled G225M grating from Hitachi (delivery: summer 2002) higher scatterhigher scatter – G285M: accept gratings if test results meet present expectation

TIPS: COS Status - Keyes - 20 September 2001 Slide 7 of 10 COS Pipeline Systems  Pipeline CDRs held at STScI – OPUS/HDA and calcos : 23 and 24 July 2001, respectively – Review panel: STScI and IDT representation Ray Kutina (STScI) – Chair Ray Kutina (STScI) – Chair Tom Brown (STScI) Tom Brown (STScI) Ken Brownsberger (CU/IDT) Ken Brownsberger (CU/IDT) Paul Goudfrooij (STScI) Paul Goudfrooij (STScI) Richard Shaw (NOAO) Richard Shaw (NOAO) – 12 Requests for Action – no significant modifications – All presentations and RFAs online at

TIPS: COS Status - Keyes - 20 September 2001 Slide 8 of 10 COS Pipeline CDR Agenda IntroductionM. McGrathIntroductionM. McGrath Data system SM4D. SwadeData system SM4D. Swade COS File Structure OverviewT. KeyesCOS File Structure OverviewT. Keyes COS Keywords & AssociationsD. SwadeCOS Keywords & AssociationsD. Swade Science Data Processing J. RoseScience Data Processing J. Rose DADS ingest and distributionA. FarrisDADS ingest and distributionA. Farris On-the-Fly-Reprocessing (OTFR)M. SwamOn-the-Fly-Reprocessing (OTFR)M. Swam COS and StarViewN. GaffneyCOS and StarViewN. Gaffney Thermal Vac supportR. HenryThermal Vac supportR. Henry Coding EnvironmentP. GreenfieldCoding EnvironmentP. Greenfield Coordination with IDTT. KeyesCoordination with IDTT. Keyes CALCOSP. HodgeCALCOSP. Hodge Schedule & resources M. McGrathSchedule & resources M. McGrath

TIPS: COS Status - Keyes - 20 September 2001 Slide 9 of 10 COS Ground System: “Front-end”  STScI Integrated Scheduling System Development – STScI FSW macro-timing tests on ops bench - 60% complete – Phase 4 development proceeding on schedule at STScI > ALIGNment modes (Focus, Aperture, Optical Select Mechanism) presently in code review at STScI (on schedule)presently in code review at STScI (on schedule) > FP-SPLIT exposures in requirements definition (on schedule) – Ops bench testing will occur per Ball FSW availability timeline

TIPS: COS Status - Keyes - 20 September 2001 Slide 10 of 10 COS Phase Development Plan (Rev 5, 6/1/01) 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 Automatic Wavelength Calibration Exposures vFUV & NUV Flat Field Lamp 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