2013
ISR 2013-04: Summary of COS Cycle 18 Calibration Programs
This document summarizes the status of the calibration programs for COS during Cycle 18.
G. Kriss
26 Apr 2013
This document describes the analysis of the data obtained for proposal 12795 which determined the exact updates for the Science Instrument Aperture File (SIAF) and for the COS aperture block positioning needed to implement routine science operations at COS FUV Lifetime Position 2.
C. Proffitt
08 Apr 2013
ISR 2013-02: COS/FUV Mapping of Stray PtNe Lamp Light Through the FCA
This ISR reviews the causes of the shutdown program 12096 and how program 12677 was crafted to avoid a similar shutdown. The document presents results from program 12677 and their impact on future lifetime position is discussed.
C. Oliveira
07 Feb 2013
This document describes the results from the second lifetime position focus sweep with COS/FUV G130M, G160M, and G140L gratings as part of the programs executed to enable COS/FUV science at the second lifetime position.
C. Oliveira
06 Feb 2013
2012
ISR 2012-02: Summary of COS Cycle 17 Calibration Program
This document summarizes the status of the calibration programs for COS during Cycle 17.
R.Osten
29 Nov 2012
ISR 2012-01: COS FUV Focus Determination for the G140L Grating
Describes the procedures for determining the COS FUV fine-focus for the G140L grating.
P. Ghavamian
03 Oct 2012
2011
ISR 2010_11: COS FUV Detector Dark Rates During SMOV and Cycle 17
This ISR describes the behavior and characteristics of the COS FUV detector dark rate during SMOV and Cycle 17.
D. Sahnow
07 Oct 2011
ISR 2011-05: Gain sag in the FUV detector of the Cosmic Origins Spectrograph
SPIE paper describing the characteristics and mitigation strategies of gain sag in the FUV detector.
David J. Sahnow, Cristina Oliveira, Alessandra Aloisi, Philip E.
Hodge, Derck Massa, Rachel Osten, Charles Proffitt, Azalee
Bostroem, Jason B. McPhate, Stéphane Béland, Steven N. Osterman
and Steven V. Penton, "Gain sag in the FUV detector of the Cosmic
Origins Spectrograph", Proc. SPIE 8145, 81450Q (2011);
http://dx.doi.org/10.1117/12.893989
Copyright 2011 Society of Photo-Optical Instrumentation Engineers.
One print or electronic copy may be made for personal use only.
Systematic reproduction and distribution, duplication of any
material in this paper for a fee or for commercial purposes, or
modification of the content of the paper are prohibited.
D. Sahnow
26 Sep 2011
ISR 2011-04: Details of COS TAGFLASH Execution
Describes the characteristics of COS TAGFLASH exposures.
T. Keyes
07 Sep 2011
ISR 2011-03: COS FUV Gridwire Flat Field Template
Results of the FUV Gridwire Flat Field Development and Testing.
J. Ely
05 Aug 2011
ISR 2011-02: Updated Results from the COS Spectroscopic Sensitivity Monitoring Program
Updated Results from the COS Spectroscopic Sensitivity Monitoring Program.
R. Osten
28 Jun 2011
ISR 2010_12: COS NUV Detector Dark Rates During SMOV and Cycle 17
This ISR describes the behavior and characteristics of the COS NUV detector dark rate during SMOV and Cycle 17.
D. Sahnow
12 Jul 2011
ISR 2010_13: SMOV: COS FUV and NUV On-Orbit Structural and Thermal Stability
This ISR provides a description and analysis of the structural and thermal stability of the COS instrument.
T. Ed Smith
12 Jul 2011
ISR 2011-01: Improved Medium Resolution Line Spread Function for the COS FUV Spectrum
We have developed an improved line spread function (LSF) for the medium resolution far- ultraviolet gratings (G130M and G160M) of the Cosmic Origins Spectrograph (COS) by taking into account scattering in the far wings due to microroughness on the HST primary mirror.
G. Kriss
18 Mar 2011
2010
ISR 2010-10: SMOV: COS NUV Imaging Performance
Presenting data analysis to describe NUV Imaging Performance for COS after SM4. Revised 10/6/2010
P. Goudfrooij
11 Mar 2010
ISR 2010-08: SMOV: COS NUV External Spectroscopic Performance
Describes the external spectroscopic performance of the COS NUV detector
S. Béland
30 Sep 2010
ISR 2010-09: COS FUV External Spectroscopic Performance
A description of the External Spectroscopic Performance of the FUV Channel on COS
P. Ghavamian
30 Sep 2010
ISR 2010-15: Early Results from the COS Spectroscopic Sensitivity Monitoring Programs
We report initial results from the Cosmic Origins Spectrograph spectroscopic sensitivity monitoring calibration programs.
R. Osten
02 Aug 2010
ISR 2010-14: COS Target Acquisition Guidelines, Recommendations, and Interpretation
This ISR provides an overview of COS TA and updates, expands, and supersedes information in the COS IHB(v2)
T. Keyes
15 Jun 2010
ISR 2010-07: SMOV: COS FUV Focus Determination
The procedures for determining the COS FUV fine-focus are described
D. Lennon
04 Mar 2010
ISR 2010-05: SMOV: COS NUV Wavelength Calibration
Update to the NUV wavelength calibration from SMOV
C. Oliveira
19 Feb 2010
ISR 2010-06: SMOV: COS FUV Wavelength Calibration
Update to the FUV wavelength calibration from SMOV data
C. Oliveira
19 Feb 2010
ISR 2010-04: SMOV: COS NUV On-orbit Optical Alignment
SMOV NUV optical alignment process description
G. Hartig
12 Feb 2010
ISR 2010-01: SMOV Absolute Flux Calibration of the COS NUV Modes
Describes the processes used to determine the absolute flux calibration of COS NUV point source spectra
D. Massa
28 Jan 2010
ISR 2010-02: SMOV Absolute Flux Calibration of the COS FUV Modes
Describes the processes used to determine the absolute flux calibration of COS FUV point source spectra
D. Massa
28 Jan 2010
ISR 2010-03: COS Near-UV Flat Fields and High S/N Determination from SMOV Data
Describes the process of determining and results of the COS NUV high S/N flat field reference files from data taken during SMOV4
T. Ake
04 Feb 2010
2009
ISR 2009-01(v1): Preliminary Characterization of the Post-Launch Line Spread Function of COS
Description of the COS Line Spread Function (LSF) as determined by post-launch testing.
P. Ghavamian
01 Oct 2009
2008
COS ISR 08-01: Phase II Update and Guidelines for Cycle 17 Users of COS
Summary of recommended practice and suggestions for observers preparing their Phase II COS program submissions for Cycle 17.
D. Soderblom
06 Jun 2008
2002
COS ISR 02-01: COS Bright Object Protection
COS Bright Object
Protection
C. Leitherer
07 Mar 2006
1999
COS ISR 99-01: COS Design Reference Mission and Ground System Volume Requirements
COS Design Reference Mission and Ground System Volume Requirements
Charles (Tony) Keyes
07 Mar 2006