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1. Calibration Accuracy
Table 8.11 summarizes the accuracy to be expected from WFPC2 observations in several areas. ... Calibration (flatfielding, bias subtraction, dark correction) . ... 0.1 DN rms . ... 3% rms (at 100 DN, <1997) . 3% rms (100 to 500 DN, background <1 DN/pixel, >1997) . 5% rms (<100 DN, background <1 DN/pixel, >1997) . ... 15% (at 100 DN) . ... 4% rms focus dependence (1 pixel aperture) . ... 1% rms max (28 days after decon) (filters bluer than F555W) . ... 0.1 DN/pixel (background > 10 DN/pixel) . ...
[ Сохраненная копия ]  Ссылки http://www.stsci.edu/instruments/wfpc2/Wfpc2_hand4/ch8_calibration20.html -- 14.8 Кб -- 04.09.2001
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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. ...
[ Текст ]  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.
[ Текст ]  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 . ...
[ Текст ]  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? ...
[ Текст ]  Ссылки http://www.stsci.edu/~mutchler/documents/ASP_Ceres_Pluto.pdf -- 2511.9 Кб -- 19.02.2007
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6. http://www.stsci.edu/~dejong/gzip/proc184.ps.gz
CORES OR CUSPS IN ELLIPTICAL GALAXIES: LUMINOSITY OR ENVIRONMENT? ... The low lumi­ nosity disky galaxies have `hard' cores with a steep slope in the luminosity profile at small radii, whereas the luminous galaxies have `soft' cores with flat profiles at small radii (e.g. Faber et al. ... Coma Cluster cores In the gas/stellar continuum paradigm, one would expect that in the outer parts of a cluster it is more likely that the last merger was gaseous than in its central regions. ...
[ Текст ]  Ссылки http://www.stsci.edu/~dejong/gzip/proc184.ps.gz -- 26.2 Кб -- 18.12.2007
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