GIPSY applications programmers should be aware of the fact that the so called undefined value (or BLANK as it is called in FITS terminology) is a fixed value which can only be different across different computer operating systems. ... The subroutine SETFBLANK can be used to set one value to BLANK; subroutine SETFNBLANK sets a whole array to BLANK. For the sake of speed it is advisable to compare data values directly with the system defined BLANK instead of using the slower function FBLANK. ...

. Next: *imcnts* - Find background Up: Regions and Source Parameters Previous: *pllist* - Look at . A region file can be made which defines the region enclosed within a specific intensity level contour. First the image must be smoothed: . cl> xray xr> xspatial xs> imsmooth ``xdata$snr.qp(400:600,400:600)'' snr gaus 5 # output is snr_smo.imh xs> isoreg xnr_smo snr 0.2 # output is snr_iso.pl xs> pllist snr_iso.pl # shows the mask. rsdc@cfa.harvard.edu . 1998-06-10

... December 29, 1999 . The Decade that Defined Star System . ... The first extra-solar star system was discovered orbiting a pulsar in 1991. Slight changes in the precise arrival times of the pulses from the central small dense neutron star gave evidence of orbiting planets . ... As the decade comes to a close, over two dozen planetary star systems have been identified, one recently confirmed by the detection of a slight eclipse by the planet itself. ... About APOD > . ...

... Credit: Apollo 8 Crew, NASA Explanation: When the second millennium began, people generally knew that the Earth was round , but few saw much of it beyond their local village. ... The Earth started as the center of everything , but became a planet placed in the Solar System , which became placed in a Galaxy , which became placed in the Local Group of Galaxies , which became placed in an expanse so vast we call it just the Universe . ... Publications with keywords: Moon - Earth - millennium . ...

... The performance of the task is directly proportional to the number of bins in the energy grid (ie the number of rows of the matrix), while the scientific accuracy of the results of using the matrix improves (to the limit of the energy resolution of the instrument) the more rows there are in the matrix. ... A user-defined grid can at present be only such that the grid points are evenly distributed across the energy range. ...

Stellarium 0.12.3 . ... Classes . ... ClassљList . ... ClassљMembers . elsetrec Member List . This is the complete list of members for elsetrec , including all inherited members. a (defined in elsetrec ) . ... alta (defined in elsetrec ) . ... altp (defined in elsetrec ) . ... argpdot (defined in elsetrec ) . ... argpo (defined in elsetrec ) . ... atime (defined in elsetrec ) . ... aycof (defined in elsetrec ) . ... Generated on Sat Aug 10 2013 17:12:44 for Stellarium by љ 1.8.3.1 ...

... Documentation for the Python objects defined by the project is divided into separate pages for each package, module, and class. The API documentation also includes two pages containing information about the project as a whole: a trees page, and an index page. ... A description of the package. ... A summary of the classes defined by the package. ... The module contents frame contains a list of every submodule, class, type, exception, function, and variable defined by a module or package. ...

previous next contents properties index . ... number> . undefined . ... number> , <number> , <number> , <number> . ... uri> . ... normal | ... ultra-expanded ] [, [ normal | ... oblique ] [, [normal | ... small-caps] [,[normal | ... 100 | 200 | ... 900] [, [normal | ... uri> [format( <string> [, <string> ]*)] | font-face-name> ] [, <uri> [format( <string> [, <string> ]*)] | ... urange> [, <urange> ]* . ... urange> ]? [ <number> ]+ [,[ <urange> ]? <number> ]+] . ...

The following set of rules govern the evaluation of all shell variables. ... var signifies the value of var or nothing, if var is undefined. ${var} same as above except the braces enclose the name of the variable to be substituted. ${var-thing} value of var if var is defined; otherwise thing. $var is not set to thing. ${var=thing} value of var if var is defined; otherwise thing. If undefined $var is set to thing. ${var?message} If defined, $var; otherwise print message and exit the shell. ...