Telescopes Branch Documents

ISR-TEL-2010-03, Phase Retrieval to Monitor HST Focus: II. Results Post-Servicing Mission 4
Discusses the results of focus monitoring since the last HST Secondary Mirror adjustment in July 2009, after Servicing Mission 4. Examines current focus of ACS & WFC3.
Niemi, S.-M., & Lallo, M. 02 Dec 2010 (pdf)

ISR-TEL-2010-02, HST Focus in SMOV4: Strategy for OTA adjustment & SI Focus
Describes the observatory-level effort to produce optimal focus during Servicing Mission Observatory Verification 4.
M. Lallo et al. 01 Dec 2010 (pdf)

ISR-TEL-2010-01, Phase Retrieval to Monitor HST Focus: 1. WFC3 UVIS Software Implementation
Describes the adaptation and calibration of HST phase retrieval code to WFC3, and its subsequent use for focus and image monitoring.
S.-M. Niemi et al. 01 Aug 2010 (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)