COS Instrument Handbook for Cycle 24 . ... Cosmic Origins SpectrographInstrument Handbook for Cycle 24 > Chapter 2: Special Considerations for Cycle 24 > 2.1 COS FUV Detector Lifetime Positions . ... Prolonged exposure to light causes the COS FUV detectors to become less efficient at photon-to-electron conversion, a phenomenon called ?gain sag?. ... STScI is undertaking a number of actions to mitigate the effects of gain sag and extend the lifetime of the COS FUV XDL detector. ...

... The sky position of a single source may be entered via the parameters ra , dec and (optionally) errorradius . ... In this mode, the output positions are printed to a single line of standard output. ... Source dec = <dec> deg. # # rawX rawY ccd On chip? +xxx.xx +xxx.xx xx x 123456789 123456789 12345678 . ... Source dec = <dec> deg. # # detX detY +xxxxx.x +xxxxx.x 123456789 12345678 . ... Source dec = <dec> deg. # # detX detY det err +xxxxx.x +xxxxx.x xxxxx.x 123456789 123456789 123456789 . ...

General Information (These links are currently under revision) . ... NIC-FPS - Near Infrared Camera/Fabry-Perot Spectrometer (coming 2004) . ... Photos of Current ARC Instruments . ... These documents are provided to give users the information needed regarding instrument design, performance and operation to plan and carry out observations. While every effort is made to keep information on this site current, instrument performance does vary continuously with time and environmental conditions. ...

... An OBJECT column gives the name of the object observed (usually a star name). ... In critical cases, it is common practice to measure sky on two or more positions around a target object, and these positions must be identified. ... A general treatment of this problem requires a column called OBJECT, bearing the usual name of the object (as in the star tables); a column labelled STARSKY, to distinguish between star+sky, star alone, or sky alone; and additional columns to identify the sky position. ...

... Meade Instruments Corporation . ... Meade Pictor 616A Color Filter System Instruction Manual . ... Remove the Meade Pictor 616A Color Filter System from the telescope or camera. Use the supplied hex wrench to remove the three screws from the telescope side of the Meade Pictor 616A Color Filter System. Position your Meade Pictor 616A Color Filter System to align with the diagram below. ... Carefully screw each filter into the wheel, and re-assemble the Meade Pictor 616A Color Filter System. ...

... TESIS . ... position: Head of the XRAS Laboratory, TESIS Main Designer and Instrument Manager . ... address: LPI, main building, room 177 . ... tel. (499) 132-65-96 . ... address: LPI, main building, room 173 . ... tel. (499) 135-80-81 . ... address: LPI, main building, room 275 . ... address: LPI, main building, room 173a . ... address: LPI, main building, room 174 . ... address: LPI, main building, room 179 . ... address: LPI, main building, room 180a . ... address: LPI, main building, room 178 . ...

Next: The Focal Plane Instruments Up: No Title Previous: The X-ray Optics . CXO has two focal plane instruments - the High-Resolution Camera (HRC) and the Advanced CCD Imaging Spectrometer (ACIS). Each of these instruments, in turn, has two detectors, one optimized for direct imaging of x rays that pass through the optics and the other optimized for imaging x rays that are dispersed by the objective transmission gratings when the latter are commanded into place directly behind the HRMA. ...

... hstpolima: Reduce linear polarization data for HST instruments (currently FOC, NICMOS and WFPC2 are supported). ... Images for the three Stokes parameters (I,Q and U), the linear polarization and position angle and their error images are output. hstpolpoints: Reduce linear polarization data for HST instruments for a set of circular apertures. ... There is a web page http://www.stecf.org/software/impol/ briefly describing the package and giving example polarization maps for HST and model data. ...

... The SIRTF Science Center is developing two Web-based tools that will be used during operations. One tool is for Quality Analysis. ... The basic design requirements for the QA tool are (1) that it provide an easy way of looking at all the data, observation by observation, and (2) that it provide an easy way to specify status and comments for each observation. ... The data accessed by this tool consists of meta-data in the central database as well as the actual data files in the archive. ...

The Wind spacecraft. ... It was designed to observe the solar wind approaching Earth, from a position near the Lagrangian point L1, and it is part of the International Solar-Terrestrial Physics (ISTP) Initiative . ... The original plan called for "Wind" to approach its final station over two years, undergoing two close encounters with the Moon to boost its speed. ... For additional details and updates, see the home page of the "Wind" mission. Exploration" home page (index) Glossary . ...

Next: *.imh and *.qp Extensions Up: IRAF/PROS Files Previous: IRAF Image Arrays . The x-ray data are stored in QPOE files (Quick Position-Ordered Events, *.qp ) rather than image arrays. ... Note that, unlike IRAF images, QPOE files have no associated header file, and are always stored in the current directory, unless explicitly specified otherwise. Non-PROS IRAF tasks can also access QPOE data files in place of image arrays. ... rp110590.qp[pi=2:30] . ... The ROSAT PSPC qp file images are . ...