12.3 SMOV4 Testing and Calibration
The primary goal of the Observatory Verification program for Servicing Mission 4 (SMOV4) was the timely commissioning of HST for normal science operations. For the newly installed COS, this included testing the focus (internal and external), verifying the target-acquisition procedures, monitoring instrument stability (both in terms of image motions and sensitivity), and measuring plate scales, line-spread functions, and other instrument parameters. SMOV4 observations were completed in October 2009, and a series of Instrument Science Reports (ISRs) detailing the results of their analysis have been published. Those ISRs and the observing programs on which they are based are listed in Table 12.1.
Table 12.1: COS ISRs Resulting from SMOV4 Calibration Programs.
| Number | Title | Author(s) | Associated SMOV Programs |
|---|---|---|---|
2009-01 | Preliminary Characterization of the Post-Launch Line-Spread Function of COS | Ghavamian et al. | 11489, 11476 |
2010-01 | SMOV Absolute Flux Calibration of the COS NUV Modes | Massa et al. | 11479 |
2010-02 | SMOV Absolute Flux Calibration of the COS FUV Modes | Massa et al. | 11492 |
2010-03 | COS Near-UV Flat Fields and High S/N Determination from SMOV Data | Ake et al. | 11478, 11481 |
2010-04 | SMOV: COS NUV On-Orbit Optical Alignment | Hartig et al. | 11468, 11469 |
2010-05 | SMOV: COS NUV Wavelength Calibration | Oliveira et al. | 11470, 11474, 11475 |
2010-06 | SMOV: COS FUV Wavelength Calibration | Oliveira et al. | 11485, 11488, 11487 |
2010-07 | SMOV: COS FUV Focus Determination | Lennon et al. | 11484 |
2010-08 | NUV Spectroscopic Performance | Beland & Ghavamian | 11476, 11477 |
2010-09 | FUV Spectroscopic Performance | Ghavamian et al. | 11489, 11490 |
2010-10 | SMOV: COS NUV Imaging Performance | Goudfrooij et al. | 11473 |
2010-11 | FUV Darks | Sahnow et al. | 11356, 11482, 11484 |
2010-12 | NUV Darks | Sahnow et al. | 11355, 11466, |
2010-13 | NUV/FUV Structural and Thermal Stability | Smith & Keyes | 11480, 11493 |
2010-14 | COS Target Acquisition Guidelines, Recommendations, and Interpretation | Keyes & Penton | 11471, 11472, 11486 |
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COS Instrument Handbook
- Acknowledgments
- Chapter 1: An Introduction to COS
-
Chapter 2: Special Considerations for Cycle 28
- • 2.1 COS FUV Detector Lifetime Positions
- • 2.2 Central Wavelength Settings Added in Cycle 26
- • 2.3 Use of the G285M Grating is Discouraged
- • 2.4 COS Observations Below 1150 Angstroms: Resolution and Wavelength Calibration Issues
- • 2.5 Time-Dependent Sensitivity Changes
- • 2.6 Spectroscopic Use of the Bright Object Aperture
- • 2.7 Non-Optimal Observing Scenarios
- • 2.8 NUV Spectroscopic Acquisitions
- • 2.9 SNAP, TOO, and Unpredictable Source Programs with COS
- • 2.10 Choosing between COS and STIS
- Chapter 3: Description and Performance of the COS Optics
- Chapter 4: Description and Performance of the COS Detectors
-
Chapter 5: Spectroscopy with COS
- • 5.1 The Capabilities of COS
- • 5.2 TIME-TAG vs. ACCUM Mode
- • 5.3 Valid Exposure Times
- • 5.4 Estimating the BUFFER-TIME in TIME-TAG Mode
- • 5.5 Spanning the Gap with Multiple CENWAVE Settings
- • 5.6 FUV Single-Segment Observations
- • 5.7 Internal Wavelength Calibration Exposures
- • 5.8 Fixed-Pattern Noise
- • 5.9 COS Spectroscopy of Extended Sources
- • 5.10 Wavelength Settings and Ranges
- Chapter 6: Imaging with COS
- Chapter 7: Exposure-Time Calculator - ETC
-
Chapter 8: Target Acquisitions
- • 8.1 Introduction
- • 8.2 Target Acquisition Overview
- • 8.3 ACQ SEARCH Acquisition Mode
- • 8.4 ACQ IMAGE Acquisition Mode
- • 8.5 ACQ PEAKXD Acquisition Mode
- • 8.6 ACQ PEAKD Acquisition Mode
- • 8.7 Exposure Times
- • 8.8 Centering Accuracy and Data Quality
- • 8.9 Recommended Parameters for all COS TA Modes
- • 8.10 Special Cases
- Chapter 9: Scheduling Observations
- Chapter 10: Bright-Object Protection
- Chapter 11: Data Products and Data Reduction
-
Chapter 12: The COS Calibration Program
- • 12.1 Introduction
- • 12.2 Ground Testing and Calibration
- • 12.3 SMOV4 Testing and Calibration
- • 12.4 COS Monitoring Programs
- • 12.5 Cycle 17 Calibration Program
- • 12.6 Cycle 18 Calibration Program
- • 12.7 Cycle 19 Calibration Program
- • 12.8 Cycle 20 Calibration Program
- • 12.9 Cycle 21 Calibration Program
- • 12.10 Cycle 22 Calibration Program
- • 12.11 Cycle 23 Calibration Program
- • 12.12 Cycle 24 Calibration Program
- • 12.13 Cycle 25 Calibration Program
- • 12.14 Cycle 26 Calibration Program
- • 12.15 Cycle 27 Calibration Program
- Chapter 13: Spectroscopic Reference Material
- • Glossary