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http://www.stsci.edu/instruments/wfpc2/Wfpc2_hand4/ch8_calibration3.html.
http://www.stsci.edu/instruments/wfpc2/Wfpc2_hand4/ch8_calibration3.html.
1. Flat Fields
The process of correcting for the effect of the variation in the sensitivity of the WFPC2 with field position is known as flat-fielding, or flattening. ... Instead, several assets are available to estimate the flat field and monitor any changes -- these include pre-launch SLTV optical stimulus flats, Earth flats, calibration channel flats (VISFLATS), and internal flats (INTFLATS). ... There are also two types of on-board flats available in WFPC2, which can be used to monitor changes in the flat field. ...
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Ссылки http://www.stsci.edu/instruments/wfpc2/Wfpc2_hand2/ch8_calibration3.html -- 9.0 Кб -- 29.08.2000
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2. http://www.stsci.edu/hst/acs/analysis/STECF/isr/isr0801.pdf
ST-ECF Instrument Science Report ACS-2008-01 Updated flux calibration and fringe modelling for the ACS/WFC G800L grism H. Kuntschner, M. KЭmmel, J. R. Walsh January 25, 2008 ABS TRACT A revised flux calibration is presented for the G800L grism with the ACS Wide Field Channel. ... We also include in this report an extensive investigation into the potential effects of fringing on the flux calibration based on the WFC CCDs fringing model as described in ST-ECF ISR ACS 2003-03 (Walsh et al. ...
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Ссылки http://www.stsci.edu/hst/acs/analysis/STECF/isr/isr0801.pdf -- 993.8 Кб -- 02.12.2010
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3. http://www.stsci.edu/~ariess/documents/1998.pdf
THE ASTRONOMICAL JOURNAL, 116 : 1009 х1038, 1998 September ( 1998. The American Astronomical Society. All rights reserved. Printed in U.S.A. OBSERVATIONAL EVIDENCE FROM SUPERNOVAE FOR AN ACCELERATING UNIVERSE AND A COSMOLOGICAL CONSTANT ADAM G. RIESS,1 ALEXEI PETER M. GARNAVICH,2 B. LEIBUNDGUT,6 M. R. V. FILIPPENKO,1 PETER CHALLIS,2 ALEJANDRO CLOCCHIATTI,3 ALAN DIERCKS,4 RON L. GILLILAND,5 CRAIG J. HOGAN,4 SAURABH JHA,2 ROBERT P. KIRSHNER,2 M. PHILLIPS,7 DAVID REISS,4 BRIAN P. SCHMIDT,8,9 ROBERT A.
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Ссылки http://www.stsci.edu/~ariess/documents/1998.pdf -- 1319.8 Кб -- 26.07.2007
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4. http://www.stsci.edu/~marel/decadal/rfi/explorer.pdf
... The science from both these missions contributed to three of the Nobel Prizes Giacconi (2002), Mather, and Smoot (2006) - awarded for NASA-based science. ... We encourage NASA to seek new launch capabilities to fill this strategic gap in moderate lift rockets to enable the Explorer program to continue launching missions with significant science payoff but reduced costs and timescales compared to large strategic missions. ... 18 Appendix B: Explorer Missions 1989-present (From PILMSS) No . ...
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Ссылки http://www.stsci.edu/~marel/decadal/rfi/explorer.pdf -- 359.4 Кб -- 13.04.2009
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5. http://www.stsci.edu/~mutchler/documents/ASP_Ceres_Pluto.pdf
... 70 · Winter 2007 www.astrosociety.org/uitc © 2007, Astronomical Society of the Pacific 390 Ashton Avenue, San Francisco, CA 94112 Hubble Observations of Ceres and Pluto: A Closer Look at the "Ugly Ducklings" of the Solar System by Max Mutchler Space Telescope Science Institute Introduction regret that my 4th Grade teacher, Mrs. Hadley, doesn't know that she provided me with the very first astronomy book that I ever read, because it had a profound impact on me. ... Planet count 7 6 7 11 12 13 8 9 9? ...
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Ссылки http://www.stsci.edu/~mutchler/documents/ASP_Ceres_Pluto.pdf -- 2511.9 Кб -- 19.02.2007
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