... FGS Data Handbook . ... Fine Guidance SensorData Handbook > Chapter 1: Instrument Overview > 1.1 Instrument Capabilities . ... The Fine Guidance Sensors (FGS), originally designed and built by the Perkin-Elmer Corporation in Danbury, CT (now Goodrich Corporation?s Optical and Space Systems), comprise a set of three radial-bay instruments on board the Hubble Space Telescope (HST). ... Under nominal operating conditions, the FGS are routinely able point the spacecraft with a precision of ~2 mas or...

ST-ECF Instrument Science Report WFC3-2005-17 Ground tests of the WFC3 UVIS grism S. S. Larsen, H. Bushouse, J. R. Walsh March 2005 ABSTRACT The fundamental parameters of a slitless dispersing element are the geometrical configuration of the spectral orders, the dispersion relation relating pixel offset to wavelength and the sensitivity of each order. ... Orders from -8 to +8 are labeled. ... The flux in the -1st order varies between 20% and 60% of that in the +1st order over the wavelength range. ...

... 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 . ...

... 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? ...