Telescopes Group Latest Reports
ISR-TEL-2009-01, FGS2r: Deadtime, Background, Photon Aging, Sensitivity Calibrations, and Noise Properties
Describes calibrations of FGS2R, derived from a large science program of sensitive relative photometry.
R. L. Gilliland et al. 15 Apr 2009 (pdf)
ISR-TEL-2008-02, The COS Pre-Flight Aperture Model and SIAF.dat File
Describes how the SIAF data were
prepared for the Cosmic Origins Spectrograph, and gives details of the spreadsheet model.
M. Lallo 09 Sep 2008 (pdf)
Calibration and Analysis of Grism data from HST
Telescopes Group Talk Series, Talk #4
N. Pirzkal 09 Jul 2008 (pdf)
ISR-TEL-2008-01, The WFC3 Science Instrument Aperture File (REVISED May 2009)
This report describes how the SIAF data were
prepared for the Wide Field Camera 3 with details of the spreadsheet model.
C. Cox 03 Jul 2008 (msword)
HST Pointing Improvements: Some Recent Statistics
TIPS/JIM Presentation. FGS guiding statistics illustrate accuracy of current HST focal plane calibrations
M. Lallo 19 Jun 2008 (pdf)
Servicing Mission 4 Observatory Operations Support
Presentation at the June 2008 HST Mission Status Review Meeting
C. Long 17 Jun 2008 (vnd.ms-powerpoint)
What is an Optical Scientist?
Telescopes Group Talk Series, Talk #3
R. Upton 30 Apr 2008 (pdf)
Observing with JWST: Guide Star Functions
Telescopes Group Talk Series, Talk #2
E. Nelan 20 Feb 2008 (pdf)
HST Focus & PSF Stability
Telescopes Group Talk Series, Talk #1
M. Lallo 19 Sep 2007 (pdf)
Improving HST Pointing & Astrometry
TIPS/JIM Presentation. Describes plan and motivation for recent and future improvements in HST pointing & astrometry via FOV alignment, GSC2 use, and archive reprocessing.
M. Lallo 19 Jul 2007 (pdf)
ISR-ACS-2007-07, Calibration of ACS/WFC Absolute Scale & Rotation for Use in Creation of a JWST Astrometric Reference FIeld
Describes the ACS absolute scale determination to support JWST calibration requirements via forward calibration.
Roeland P. van der Marel et al. 02 Jul 2007 (pdf)
JWST-STScI-001157, JWST Point Spread Function: Calculation Methods and Expected Properties
Presents methods that can be used to model the JWST PSF, parameters used to characterize it, and effects on science.
R. B. Makidon et al. 08 Jun 2007 (pdf)
ETC/Synphot/CDBS Oversight
Presentation to the Instruments Division
Rosa I. Diaz-Miller 05 Jun 2007 (pdf)
JWST-STScI-001136, Calibration of ACS/WFC Absolute Scale & Rotation for Use in Creation of a JWST Astrometric Reference Field
Describes the ACS absolute scale determination to support JWST calibration requirements via forward calibration.
Roeland P. van der Marel et al. 16 May 2007 (pdf)
Improving Hubble Space Telescope's Pointing & Absolute Astrometry
This paper, presented at the summer 2007 AAS, describes the benefits and details of an improved HST focal plane model and operational guidestar catalog.
M. Lallo et al. 01 May 2007 (pdf)
Improving Hubble Space Telescope's Pointing & Absolute Astrometry
M. Lallo et al., May 2007
ISR-TEL-2006-01, Modeling Aberrations in the Advanced Camera for Surveys
Investigates the plausibility of optical misalignments as the cause of apparent aberration changes implied by phase retrieval of HRC PSFs
K. Houairi et al. 13 Oct 2006 (pdf)
ISR-TEL-2006-01, Modeling Aberrations in the Advanced Camera for Surveys
Investigates the plausibility of optical misalignments as the cause of apparent aberration changes implied by phase retrieval of HRC PSFs
K. Houairi et al. 13 Oct 2006 (pdf)
JWST-STScI-000962, NIRCAM as Fine Guidance Sensor for JWST, Operations Concept and Use Cases
This Technical Report outlines the Operations Concept for using NIRCam as the Fine Guidance Sensor for JWST.
E. Nelan & V. Balzano 15 Aug 2006 (pdf)
Point Spread Function Modeling for the James Webb Space Telescope
Presentation to the Instruments DIvision
Colin Cox & Phil Hodge 09 Jun 2006 (pdf)
Temporal Optical Behavior of HST: Impact on Science Observations
R. B. Makidon et al., May 2006
Temporal Optical Behavior of HST: Focus, Coma & Astigmatism History
M. Lallo et al., May 2006
ISR-TEL-2005-03, HST Temporal Optical Behavior & Current Focus Status
Reviews the timescales, mechanisms, and importance of variations in aberrations (focus, coma, astigmatism). Presents focus status of the observatory.
M. Lallo et al. 27 Oct 2005 (pdf)
ISR-TEL-2005-03, HST Temporal Optical Behavior & Current Focus Status
Reviews the timescales, mechanisms, and importance of variations in aberrations (focus, coma, astigmatism). Presents focus status of the observatory.
M. Lallo et al. 27 Oct 2005 (pdf)
HST Temporal Optical Behavior: Models & Measurements with ACS
R. B. Makidon et al., 30 Oct 2005
TIR-CDBS-2005-01, Assessment & Delivery of Reference Files
This TIR defines the standard procedures for the delivery of calibration pipeline and SYNPHOT reference files.
R. Diaz-Miller 16 May 2005 (pdf)
ISR-TEL-2005-02, Guiding Errors in 3-Gyro: Experience from WF/PC, WFPC2, STIS, NICMOS and ACS
As background information to support interpretation of results during testing under 2-gyro operation, this report summarizes typical behavior gleaned from several observations with ACS, WF/PC, WFPC2, STIS and NICMOS.
R. Gilliland 20 Feb 2005 (pdf)
Guiding Errors in 3-Gyro: Experience from WF/PC, WFPC2, STIS, NICMOS and ACS
As background information to support interpretation of results during testing under 2-gyro operation, this report summarizes typical behavior gleaned from several observations with ACS, WF/PC, WFPC2, STIS and NICMOS.
R. L. Gilliland 20 Feb 2005 (pdf)
ISR-TEL-2005-01, Recent Jitter and PSF Variations
This ISR documents Point Spread Function (PSF) and pointing drifts from a recent 5-orbit program with the HRC of ACS.
R. Gilliland 01 Feb 2005 (pdf)
Observer Anomaly(?): Recent Jitter & PSF Variations
ISR TEL 2005-01 This ISR documents Point Spread Function (PSF) and pointing drifts from a recent 5-orbit program with the HRC of ACS.
R. L. Gilliland 01 Feb 2005 (pdf)
ACS field-dependent PSF variations...
Examines PSF width and ellipticity variations over WFC and HRC field resulting from optical and charge diffusion effects.
J. Krist 01 Jun 2003 (pdf)
On-orbit alignment & imaging performance of HST ACS
G. F. Hartig et al. Jan 2002
HST Focus in Year 2000 - A Review of the Cycle 9 Focus Monitor Program
OTA-2001-01: After the last HST refocusing in June 2000,an enhanced OTA focus monitor(8829) began
running as a cycle 9 observatory-level calibration to supplement...
M. Lallo 01 Feb 2001 (pdf)
Modelling HST Focal-Length Variations
Paper on the Modelling HST Focal-Length Variations.
J. Hershey 01 Jan 2000 (pdf)
A Thermal Study of the Early NGST Instrument Module
ISR NGST-01: A study was performed on the GSFC-led design of the NGST Integrated Science Instrument
Module (ISIM) to gauge the sensitivities of the optical bench temperatures...
M. Lallo 01 May 1998 (pdf)
NICMOS History Database and Web Tools
OSG-CAL-98-01: The history of NICMOS platescale, focus, and coronographic hole data has been stored in
a database which is accessible via tools on the World Wide Web. The history tool which
allows queries on the data, is available to the public.
C. Tullos 01 Apr 1998 (pdf)
NICMOS Distortion Correction
OSG-CAL-97-07: The NICMOS distortion was measured by a series of images of the star cluster NGC1850.
C. Cox 01 Dec 1997 (pdf)
Velocity Aberration Correction for Parallel Observations
OSG-CAL-97-06: The velocity aberration correction performed by the HST pointing control software is
valid for the target direction only...
C. Cox 01 Oct 1997 (pdf)
WWW Query Tool for CDBS
OSG-CAL-97-05: Using the World Wide Web, direct query-access has been made to the Calibration Database.
C. Tullos 01 Aug 1997 (pdf)
NICMOS SM-2 SMOV Alignment Results
OSG-CAL-97-04: NICMOS SM-2 SMOV Alignment Results.
O. Lupie 01 Aug 1997 (pdf)
The Focal Plane Monitoring Program
OSG-CAL-97-02: The OSG runs a focal plane monitoring program, known as the Heptathlon , routinely
checking the SIs and FGSs four times a year as a way of assessing trends and stability in
the HST focal plane.
C. Cox 01 May 1997 (pdf)
Data Quality Assessment Database and a World-Wide Web Interface
OSG-CAL-97-01: We have developed a database to hold this information and a series of World-Wide
Web pages to facilitate reporting directly into this database.
C. Tullos 01 Feb 1997 (pdf)
Transforming Non-COSTAR Aperture Positions to the New Vehicle Reference
OSG-CAL-96-06: A major effect of the on-orbit FGS to FGS re-alignment of day 105 1996, was the redefinition
of the vehicle reference frame...
M. Lallo 01 Sep 1996 (pdf)
The HST Set of Absolute Standards for the 0.12 micron to 2.5 microns Spectral Range
OSG-CAL-96-05: A proposal to create a homogeneous set of absolute calibration standards covering for the
first time the 0.12 micron to 2.5 microns spectral range is described.
L. Colina 01 Aug 1996 (pdf)
CDBS Spectral Atlases of Galaxies and Emission Line Objects
OSG-CAL-96-04: This document explains the content and scope of new spectral atlases of galaxies and galactic emission
line objects added to the CDBS astronomical catalog.
L. Colina 01 Jul 1996 (pdf)
OSG Cycle 6 Calibration Plan
OSG-CAL-96-03: This report summarizes the Observatory Support Group calibration plans for Cycle 6.
L. Colina 01 Jun 1996 (pdf)
The 0.12-2.5 micron Absolute Flux Distribution of the Sun for Comparison with Solar Analog Stars
OSG-CAL-96-02: An absolute flux calibrated reference spectrum of the Sun covering the 0.12 to 2.5 micron
wavelength range is presented.
L. Colina 01 Apr 1996 (pdf)
Absolute Flux Calibrated Spectrum of Vega
OSG-CAL-96-01: An absolute flux calibrated reference spectrum of Vega, the primary calibration standard
in the optical, is presented.
L. Colina 01 Mar 1996 (pdf)
Spectrophotometric Standards from the Far-UV to the Near-IR on the White Dwarf Flux Scale
SCS-007: The second generation instruments to be installed in 1997 on the Hubble
Space Telescope (HST) require spectrophotometric standard stars for flux
calibrations...
R. Bohlin 01 Jan 1996 (pdf)
Absolute Flux Calibration of Optical Spectrophotometric Standard Stars
SCS-004: A method based on Landolt photometry in B and V is developed to correct for a
wavelength independent offset of the absolute flux level of optical spectrophotometric
standards.
L. Colina 01 Oct 1995 (pdf)
Phase-retrieval analysis of pre- and post-repair HST images
J. Krist & C. Burrows, 1 Aug 1995
CDBS Kurucz Stellar Atmosphere Atlas
SCS-006: CDBS Kurucz Stellar Atmosphere Atlas.
L. Colina 01 Jul 1995 (pdf)
White Dwarf Standard Stars: G191-B2B, GD 71, GD 153, HZ 43
SCS-005: White Dwarf Standard Stars: G191-B2B, GD71, GD153, HZ43.
R. Bohlin 01 May 1995 (pdf)
Focus Monitoring and Recommendation for Secondary Mirror Move
OTA-18: Focus monitoring and recommendation for secondary mirror move.
S. Casertano 01 Jan 1995 (pdf)
The WFPC2 Scales and Alignments
SOB-94-10-21: WFPC2 observations of the open cluster M67 has been used to establish the scales
and rotations with respect to the HST V2 V3 coordinate system.
C. Cox 01 Oct 1994 (pdf)
An Investigation into the Guidance of FOC GTO 4073
SOB-94-06-07: An analysis of the guidance of the 1992 FOC GTO program 4073 was
conducted at the request of the PI...
S. Holfeltz 01 Jun 1994 (pdf)
A Multipurpose Pointing Analysis Tool (OBSOLETE!)
SOB-94-02-15: We present software for determining accurate HST attitude from
guidestar and velocity data.
C. Cox 01 Feb 1994 (pdf)
A Determination of the Pointing History during FOS Scans of Mars
SOB-93-12-06: We have used pointing software, developed earlier for a comparison with the PASS software, to analyze scans of
Mars performed at intervals since June 1992.
C. Cox 01 Dec 1993 (pdf)
Attitude Determination and Target Location
SOB-92-01-01: Attitude Determination and Target Location.
C. Cox 01 Nov 1992 (pdf)
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