SPACE
TELESCOPE
SCIENCE
INSTITUTE
Operated for NASA by AURA
TIPS / COS
19 September 2002
Overview
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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
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SM4
replace COSTAR
Sembach - 19 September 2002
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COS Instrument Activities
 Science instrument news since last TIPS presentation (June ‘02)
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FUV flight detector (with new QE grid) qualified, installed and aligned
in instrument
Fully integrated instrument currently undergoing alignment at Ball
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Fine alignment will begin soon
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Gaseous N2 purge
Light passed through both NUV and FUV optical paths
Initial “rough” alignment of all optics is excellent
Problem noted with RAS/Cal chief ray alignment
ABA to be used to calibrate and reset RAS/Cal
FUV spare detector being assembled
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Mechanical assemblies (door, actuators, etc), QE grid installed
Final QE measurement in mid-October
Sembach - 19 September 2002
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COS Instrument Activities
 SI news (continued)
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Optic select mechanism (OSM) life test unit undergoing bench testing
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Primary D2 lamp in cal-platform failed during pre-alignment platform
random vibration / sine burst testing
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Determine OSM repeatability and stability properties
Necessary for FP-POS (FP-SPLIT) timing and auto-wavecal usage
Defective lamp, problem understood, replacement lamp to be vibe
tested and installed after the N2 alignment testing
Thermal controller set point issue
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Lower than the expected NUV MAMA survivability temperature
Important only in worst-case scenario (extended HST safing / lowpower with several additional problems)
Sembach - 19 September 2002
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STScI Integrated Scheduling System
 Phase 5 development completed
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Auto-wavecals completed
All primary science / calibration exposure development is now complete
 Phase 6 development is in progress
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Bright object protection target screening document drafted, circulated
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Instrument Science Report to be filed (Leitherer)
Initial preparations for SMOV begun
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Discussions initiated with IDT
Meeting at STScI next week (called by Carl Biagetti)
Sembach - 19 September 2002
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COS Phase Development Plan
(Rev 6, 10/26/01)
Phase 1 (1/1/00 – 6/30/00)
 Macro Development
 Reconfigurations
Phase 2 (7/1/00 – 12/31/00)
 NUV Timetag Mode + Darks
 FUV Timetag Mode + Darks
Phase 3 (1/1/01 – 6/30/01)
 FUV & NUV Accumulation Science Exposures
 FUV & NUV Target Acquisition Exposures
 FUV & NUV Target Peakup Exposures
Phase 4 (7/1/01 – 12/31/01)
 Aperture Alignment Exposures
 OSM1 Focus Alignment Exposures
 OSM1 Rotation Alignment Exposures
 OSM2 Rotation Alignment Exposures
 FUV & NUV FP Split Exposures
Phase 5 (1/1/02 – 6/30/02)
 FUV & NUV GO Wavelength Calibration Exposures
 FUV & NUV Flat Field Lamp Calibration Exposures
 FUV & NUV Automatic Wavelength Calibration
Exposures
 SAA Contours
Phase 6 (7/1/02 – 12/31/02)
 SMGT Preparations
 SMOV Special Commanding
 FUV & NUV Anomalous Recovery
 FUV & NUV Initial Turn-on
 FUV & NUV BOP Target Screening
Phase 7 (1/1/03 – 6/30/03)
 FUV & NUV Lifetime Adjustments
 Coordinated Parallels
Sembach - 19 September 2002
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COS “Back-End” Activities
 COS Pipeline (CALCOS)
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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
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Standard header keyword selections/definitions for science and ACQ
exposures completed
Established COS association requirements
Sembach - 19 September 2002
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COS User Support Development
 COS mini-handbook
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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
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Spectroscopic ETC requirements revisited (Astronomer Proposal Tools
environment)
COS implementation to occur over next 6 months
Sembach - 19 September 2002
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