... Miriad has a couple of tasks available for finding positions of sources (see also cgcurs in Chapter 17 ). ... It fits a 2-D parabola to the image intensities in a 3 by 3 pixel box centred on the brightest pixel in a specified region and reports the fitted location and intensity. ... Input image . ... The quality of your fit can improve significantly by selecting a snug region, and/or using the clip keyword to keep pixel values with little signal (e.g. sidelobes and noise) out of the fitting process....

... The quickest way to learn how each observation was performed is to use the iminfo task in the STSDAS toolbox.headers package to look at the headers of the science data. ... Number of extensions . ... Given that NICMOS data files contain multiple extensions, the number of the desired extension must always be specified. ... In order to simplify access to NICMOS FITS image extensions, each extension header contains the two keywords: EXTNAME (extension name) and EXTVER (extension version number). ...

... The generation of simulated sources whose physical properties are well understood is useful in assessing the functionality of point source analysis software. Qpsim is an IRAF/PROS task which will generate events from sources of given intensity, shape, and position and either overlay them on a flat background in a new QPOE file or inject them into an existing QPOE file. ... The simulated data can be a useful tool in calibrating point source analysis software. ...

... CI Cam is known to be a B[e] star and X-ray transient source. ... Figure 1. The light curve of CI Cam in residuals relative to the mean level of the slow variability (top) . The radial velocity curve of the HeII emission (middle) . ... The V light curve is shown in Figure 1 (top). ... Comparison of two CI Cam spectra in the region of HeII line. ... The radial velocity curve of HeII in CI Cam has a saw-tooth shape that may be an evidence of an elliptical orbit. ...

... A2584 used the cband receiver and the mock spectrometers to cover a 1 ghz band at cband. ... Of the 14 bands, some were 11 Mhz and others were 86 Mhz. the digital filtering and offsetting was used. 01-17nov10 : gortex cover comes loose from cband horn mouth. moisture get ins horn, causes tsys to go up . 22feb11: the wideband H2CO line did not line up with the narrow band H2CO line. ... The plots for 22feb11 below have jumps across the band in Tsys. ... Plots were made of: . ... cntsToK and Tsys . ...

DIGITAL WDC EXCHANGE FORMAT . FOR OBSERVATORY 1.0 MINUTE VALUES 1. ... DATA-1 .. DATA-60 are 1-minute values of the given element for that hour. ... Typically, digital 1-minute values received by WDCs from organizations operating automatic magnetic observatory instruments are averages of more frequendy sampled values, e.g. 10-second point samples. ... If the method used to obtain 1-minute average values is important to a user, the WDC will assist in determining the exact procedure applied. ...

... These data were originally part of a PhD-thesis at Leiden Observatory by M.H. Wieringa (1991). 1 name Name of source (char8, example : '76W0771*') 2 freq MHz Frequency of source detection in MHz (int, example : 327 or 608 ) 3 ra_1950 radians B1950 Right Ascension (in radians) ( real , example : 2.328327) 4 ra_1950_deg degrees B1950 Right Ascension (in degrees) ( real , example : 133.403290) 5 ra_err seconds Error in RA ( ... 70W : Umi, 327 MHz only, one field. ... Columns 21 Rows 5850...

... The x-ray spectral analysis consists of a comparison between the observed pulse height spectrum and a pulse height spectrum calculated using a given spectral model. ... To obtain the spectral parameters for an x-ray source, several steps need to be followed. For each source: . ... obtain the best fit parameters for a spectral model - repeated for each model of interest . obtain a 1-D or 2-D grid of values around the best fit values - this can be done for as many models as desired . ...

... SELECT file, title, rank(ts_vec, to_tsquery('create schema')) FROM postgresql_manual WHERE ts_vec @@ to_tsquery('create schema') ORDER BY rank(ts_vec, to_tsquery('create schema')) DESC LIMIT 5; file | title | ... CREATE SCHEMA | ... SELECT file, title, rank('{0, 0, 0.01, 0.99}',ts_vec_tb, to_tsquery('create aggregate')) FROM postgresql_manual WHERE ts_vec_tb @@ to_tsquery('create aggregate') ORDER BY rank('{0, 0, 0.01, 0.99}', ts_vec_tb, to_tsquery('create aggregate')) DESC LIMIT 5; file | ...

... Science . ... Science Users Information > Science Publications > Science Announcements . ... Observing Facilities . ... Observing with ESO Telescopes . ... Instrument Pipelines . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... Science Announcements . ... Published: 05 Oct 2015 . ... New data products resulting from the VST Public Survey ATLAS are now available via the dedicated Phase3 query interface at the Science Archive Facility . ... Published: 31 Aug 2015 ....