Next: Detection Efficiency Up: CCD Scientific Performance Previous: CCD Scientific Performance . The X-ray energy required to liberate a charge pair in a semiconductor is approximately an order of magnitude lower than in gas detectors, hence the potential spectroscopic advantage of CCD detectors. ... For a number of years, good scientific CCDs attained noise performance of electrons rms, but this limited the energy resolution for X-ray energies 3keV. ...

... In Table 14.1 we list a provisional summary of our calibration goals for Cycle 7 and Cycle 7-NICMOS. ... The present knowledge of photometric calibration does not yet permit a definitive projection of the ultimate accuracies which may be obtainable with NICMOS. ... Perforce our existing calibration data for Camera 3 have been obtained with it out of focus and therefore the estimates for its in-focus performance remain extrapolations. ... Breathing and dewar motion are approximately equal effects. ...

Electron Bombarded, Back-Illuminated CCD Sensors . ... EBCCD PERFORMANCE: EBS Gain . ... To the first order, the signal gain in the EBCCD is proportional to the kinetic energy of the photoelectrons prior to their impinging on the CCD back surface. ... To obtain EBS gain in the active material, it is necessary for the photoelectron to enter the pixel from the back surface of the CCD -- away from the gate structures that dissipate the electron energy. ... The EBCCD EBS gain was tested using two methods. ...

... Classes . ... casa . casa::UnitName . ... handles physical units More... #include < UnitName.h > . ... UnitName (const UnitName &other) . ... UnitName (const String &tag, const UnitVal &kind, const String &name= EmptyString ) . ... UnitName (const Unit &tag, const String &name= EmptyString ) . ... Get definition value of the unit. const String & . ... String . ... String getName() const will return the unit name . ... Get the name tag of the defined unit. const UnitVal & casa::UnitName::getVal . ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

... The principal objectives for 2004/2005 were to: . ... obtain grants and additional external funding to support new research projects - done; . strengthen the Observatory's research capability in solar system and stellar astrophysics; . ... The key additional task for the year was to widen the Observatory's access to research development funds and to lay a strong foundation for the forthcoming Research Assessment Exercise benchmark. ... Objectives for Financial Year 2005/2006 . ...

... As part of our effort to enhance the calibration of STIS (a spectrograph on-board the Hubble Space Telescope), we have developed a model of the readout process for CCD detectors suffering from degraded charge transfer efficiency. ... Nevertheless the empirical corrections for STIS provide an ideal means of testing and calibrating the physical model, as the empirical corrections are essentially a distillation of what is to be learnt from the calibration data with respect to CTI. ...