... casa::WCLELMask . ... Class to define a mask as a LEL expression. ... WCLELMask (const String &command) . ... WCLELMask (const ImageExpr < Bool > &expr) . ... WCLELMask (const LatticeExpr < Bool > &expr) . ... operator== (const WCRegion &other) const . ... The WCLELMask class is a specialization of class WCRegion . ... Destructor. virtual Bool casa::WCLELMask::canExtend . ... virtual WCRegion * casa::WCLELMask::cloneRegion . ... Assignment (copy semantics). virtual Bool casa::WCLELMask::operator== ....

... AstroCC is a coordinate conversion utility for astronomy. It accepts an object designation or the coordinates of an object and calculates coordinates in alternative systems, and at different dates, times, and locations. It also provides lunar and bright planet coordinates to aid in planning observations. ... BJD values may also be retrieved from http://astroutils.astronomy.ohio-state.edu/time/utc2bjd.html which is based on Eastman et al. ... Coordinate data are obtained from SIMBAD. ...

... regionmask region=<table> autosize=no withmaskset=yes maskset=mask.ds . ... regionmask converts a FITS Region extension table to an image mask, either as a FITS image or as an ASCII list of pixels. ... These same parameters also define a clipping rectangle (the origin and extent of the output image), which engages by default. ... image . ... The WCS keywords specify the size and alignment of the pixels and the bounding keywords specify the clipping rectangle of the output image (unless auto-sized). ...

... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...

... Although the conversion of telescope offsets from the FOS ( x,y ) reference frame to the telescope (V2,V3) reference frame is provided in the FOS paper products for all acquisition slews, you may occasionally need to calculate this rotation for other purposes. As noted in Chapter 29, the FOS ( x.y ) coordinate system is defined so that the x -axis is parallel to the diode array and the y -axis is perpendicular to the diode array. ... V2 = X sin(A) - Y cos(A) . V3 = X cos(A) + Y sin(A) . ...

... The IRAF environment provides three coordinates systems: . physical: image pixel coordinates used in the reference (original) image. logical: image pixel coordinates, relative to the current section and size of the image. ... 22:13:53.7 44:28:53.9 - the usual representation of RA, Dec . ... Logical, physical and world coordinate systems are all supported in the PROS software, and regions can be specified with any combination of them. ... c 22:13:53.7 44:28:53.9 8 . ... physical: 6930 9390 240 . ...

OptInt PmWiki : Pm Wiki / Markup Expressions . ... The {(...)} "expression markup" allows for a variety of string and formatting operations to be performed from within markup. Operations defined by this recipe include substr , ftime , strlen , rand , toupper / tolower , ucfirst , ucwords , pagename and asspaced . ... Note that the initial position argument is zero-based (i.e., the first character is referenced via a "0"). the number of characters to extract . ... ftime "fmt" "when")} . ...

... The initial descriptions of the FITS format provided a simplified method for describing the physical coordinate values of the image pixels, but deliberately did not specify any of the detailed conventions required to convey the complexities of actual image projections. ... They were CRPIX n for the reference pixel location on pixel axis n , CRVAL n for the coordinate value at that pixel, CDELT n for the increment at that pixel in the coordinate value, and CTYPE n for the type of coordinate. ...