The following ISRs were published characterizing the behavior of COS and STIS following HST Servicing Mission 4 (SM4). Please visit the following websites to access these and future ISRs.
COS ISRs published since SM4:
ISR 2010-15: Early Results from the COS Spectroscopic Sensitivity Monitoring Programs ISR 2010-14: COS Target Acquisition Guidelines, Recommendations, and Interpretation ISR 2010-10: SMOV: COS NUV Imaging Performance ISR 2010-09: COS FUV External Spectroscopic Performance ISR 2010-07: SMOV: COS FUV Focus Determination ISR 2010-06: SMOV: COS FUV Wavelength Calibration ISR 2010-05: SMOV: COS NUV Wavelength Calibration ISR 2010-04: SMOV: COS NUV On-orbit Optical Alignment ISR 2010-03: COS Near-UV Flat Fields and High S/N Determination from SMOV Data ISR 2010-02: SMOV Absolute Flux Calibration of the COS FUV Modes ISR 2010-01: SMOV Absolute Flux Calibration of the COS NUV Modes ISR 2009-01: Preliminary Characterization of the Post-Launch Line Spread Function of COS
STIS ISRs published since SM4:
ISR 2010-01: Monitoring of the Wavelength Calibration Lamps for the Hubble Space Telescope ISR 2009-02: STIS CCD Performance after SM4: Read Noise, Dark Current, Hot Pixel Annealing, CTE, Gain, and Spectroscopic Sensitivity