... HST . WF/PC-1 Instrument Science Reports . ... Missions . ... Data . ... Annual Reports . ... Future Missions and . ... Missions Office . ... HST Peer Review Process . ... Science Blog . ... HST Overview . Overview . ... Servicing Missions . ... Cycle 24 Announcement . Cycle 23 Results . ... Phase II Cycle 23 . ... Reporting Problems . Retrieving HST Data . ... HST Science Year in Review . ... The method for developing a position dependent zero point magnitude correction is outlined. ...

... It is designed to work with data from the EPIC-pn or EPIC MOS cameras. eslewchain takes as input a slew event le and associated attitude les and produces a series of images and exposure maps. ... Data products are produced in a number of photon energy bands 1 = 0.2{0.5 keV 2 = 0.5{1.0 keV 3 = 1.0{2.0 keV 4 = 2.0{12.0 keV 5 = 0.2-2.0 keV 0 = 0.2-12.0 keV 5.2 How to use eslewchain runs on a processed event list in the current directory. ... A summary File, "rev" "obsid" SCX00000SUM.SAS 9 Output Files...

... The improvement will be more pronounced in our crowded Wide Field Camera (WFC) images, and may be increased further through use of a more sophisticated method of combining the individual dithered images. Our analysis allows us to check for point spread function shape variations in the HST Planetary Camera (PC) field. ... In crowded field images, we are deriving information about the faint end of the luminosity function (LF) from the texture of the image background. ...

... The STECF IRAF layered package impol provides five tasks specifically aimed at reduction of HST imaging polarimetry data for ACS, FOC, NICMOS and WFPC2. ... Reduction of HST polarimetry data and simulation of raw polarimetry images, together with polarization vector plotting, are covered. ... hstpolsim -- Produce simulated polarization input data frames for HST instruments from images of the total signal, the linear polarization and the position angle of the polarization vectors. ...

... Several HST instruments both current and decommisioned have provided imaging linear polarimetry capabilities. ... The STECF IRAF layered package impol provides five tasks specifically aimed at reduction of HST imaging polarimetry data. ... Reduction of HST polarimetry data and simulation of raw polarimetry images, together with polarization vector plotting, are covered. ... For reduction of data from imaging linear polarization instruments other than from HST, the instrument name is `SPECIAL'. ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... casa::DirectoryIterator . ... Construct the iterator for the working directory. DirectoryIterator (const Directory &dir) . ... DirectoryIterator (const Directory &dir, const Regex &regExpression) . ... Regular expression if given, with this variable it is possible to compare files with regular expression. dirent ** . ... Note that the regular expression is a true regular expression (as defined by class Regex and not a file expression as used in shells. ... File casa::DirectoryIterator::file . ...

... Abstract: A list of 901 radio sources with positional accuracies better than 0.5 arcseconds has been prepared from seventeen lists of radio source positions found in the literature. ... The attached compilation of 901 radio sources has been prepared from seventeen lists of radio source positions found in the literature. Fifty six percent of the sources are listed in more that one of the seventeen catalogues and in each case the catalogued radio positions are more accurate than 0.5". ... 1989). ...