... Abstract Find the rotation matrix corresponding to a specified unit quaternion. ... Every rotation is represented by a unique orthogonal matrix; this routine returns that unique rotation matrix corresponding to q. The CSPICE routine m2q_c is a one-sided inverse of this routine: given any rotation matrix r, the calls m2q_c ( r, q ) q2m_c ( q, r ) leave r unchanged, except for round-off error. ... Version -CSPICE Version 1.3.1, 06-FEB-2003 (EDW) Corrected typo error in Examples section. ...

... Note that the size of the returned array may be greater than the number of slices currently in the stack, with unused elements set to null. public int getSize () . Returns the number of slices in this stack. public java.lang.String[] getSliceLabels () . ... Returns null if the stack is empty or the label of the first slice is null. public java.lang.String getSliceLabel (int n) . ... Returns null if the slice does not have a label. public void setSliceLabel (java.lang.String label, int n) . ...

... GDS -- fatal error . ... GDSD_READ -- item not found . ... GDSD_READ -- more data requested than present . ... GDS -- cannot open set . ... GDSD_CREATE -- cannot create set . ... GDSD_DELETE -- cannot delete set . ... GDSC_GRID -- axis name not unique . ... GDSC_GRID -- axis not present . ... GDSC_WORD -- axis not present . ... GDSD_RFITS -- item not FITS type . ... GDS_EXTEND -- axis already present . ... GDSD_WRITE -- cannot extend file . ... GDSD_TYPE -- item not FITS type . ...

... The measurements themselves should be stored in a column with the label SIGNAL. ... Programs will expect that SIGNAL represents the integration of the photon flux for the exposure time given in the EXPTIME column (see section ). ... In that case, the column label should be RAWMAG; see Table . Programs will expect RAWMAG to be the usual negative logarithms of intensities; that is, RAWMAG values only use EXPTIME in determining weights. ...

... Restrictions ) are used. If specified form of output is EMP then astrometric equatorial coordinates are printed in the form usual for Ephemerides of Minor Planets, with formal precision of 0.01 minute of time in R.A. and 0.1 minute of arc in declination. ... It should be noted that the near-opposition ephemerides are not calculated for bodies/ points with numbers from –12 to 0 (in case they are included into task for computation of such ephemerides only their names are displayed in the results). ...

... These objects are predefined JavaScript objects that you access through the mimeTypes array of the navigator or Plugin object: navigator.mimeTypes[ index ] where index is either an integer representing a MIME type supported by the client or a string containing the type of a MimeType object (from the MimeType.type property). ... Property . ... The Plugin object for the plug-in that is configured for the specified MIME type If the MIME type does not have a plug-in configured, enabledPlugin is null. ...

... Meta Index / Home Page / Description / Specifying source region shapes . When radiusstyle =`contour', the task calculates the source region shape as an elliptical locus which approximates the contour of the PSF at a given flux value. ... Clearly, in order to calculate the shape of such a flux contour, it is necessary firstly to normalize the PSF to the source brightness and secondly to determine the flux level (in `brightness' units per pixel) at which to find the contour. ...

... A hundred years later, a handful of Tunguska-sized asteroids have been spotted by telescopes, but most remain unseen. The asteroid designated 2008 TC3 , which made the news on October 6th before colliding with the Earth on October 7th was too small to constitute a part of the "Earth impact hazard". ... 2008 TC3, for example, finally exploded in the atmosphere above Sudan . ... Wednesday, 8 October 2008 01:15 . International Year of Astronomy, Ireland National Node . ...

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

Polar Align Your Telescope, Here's How. Articles | AstroGuide | ... How to Polar Align . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

TYPES Trees are represented by two types: entree (enumerated tree) and bitree (bit tree). ... Also, it's possible to match patterns: tree <* treequery treequery >* tree The last two operations return TRUE if the node matches the treequery pattern. ... Example of how to add a node: select entree_next(tid) from dmoz where tid <* '1.2.3.*.0' order by tid desc limit 1; INDICES Type tree supports two types of indices: B-Tree - accelerates operations: <,>,<=,>= and =. ...

Permitted Context: SELECT . ... The OPTION element can only occur within a SELECT element. ... When the form is submitted, the NAME of the enclosing SELECT element is paired with the OPTION's VALUE attribute to contribute a name/value pair for the selection. ... CLASS . ... The string to be used together with the name attribute of the enclosing select element, when submitting the form. ... SELECTED . ... This attribute is used within menus to define shaped hotzones associated with this option's value. ...

xyz2grd - Converting an ASCII or binary table to grd file format xyz2grd xyzfile -G grdfile -I x _ inc [ m|c ][/ y _ inc [ m|c ]] -R west / east / south / north [ r ] [ -D xunit / yunit / zunit / scale / offset / title / remark ] [ -F ] [ -H [ nrec ] ] [ -L ] [ -N nodata ] [ -V ] [ -Z [ flags ] ] [ -: ] [ -bi [ s ][ n ] ] xyz2grd reads a z or xyz table and creates a binary grdfile. xyz2grd will report if some of the nodes are not filled in with data. ... H Input file(s) has Header record(s). ...

Science and metrology windows specification release 1.doc Page 1 of 5 MRO Delay Line Specification of the Science and Metrology Windows for the MROI Delay Lines INT-406-TSP-0004 The Cambridge Delay Line Team rev 1.1 20 April 2010 Cavendish Laboratory JJ Thomson Avenue Cambridge CB3 0HE UK Change Record Revision Date Author(s ... Scope The specifications produced are for the science window and the two metrology windows of the delay line. ... 2.1 Science Window Requirements .. ...

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 . ...

Next: Date conversion functions Up: Command line procedures Previous: Analysis procedures Contents . list_names [, names _char ] List HDS objects at current level. Store in parameter, if given. list_tree List HDS tree beginning at current level. list_scans [, index ] List observed scans, stars, times, stations, and codes. If index is specified, list only these scan IDs. list_bgscans List stars and back ground scans. list_stars [, stars _char ] List stars present in currently loaded data. ...

... Two high school students from Texas and Louisiana are the winners of the 2012 Priscilla and Bart Bok Awards for their astronomy projects presented at the Intel Science and Engineering Fair in Pittsburgh, Pennsylvania in May. The awards were presented on May 18 by the Astronomical Society of the Pacific (ASP) in partnership with the American Astronomical Society (AAS), supported by funding from the National Science Foundation (NSF). ... The Bok prize is named for Bart and Priscilla Bok. ...

... These include support for spectral coordinate systems, and compliance with FITS WCS papers I, II and III. ... Status Supported Supported Supported Supported Supported (only written when producing a FITS-AIPS header) Coordinate /algorithm/distortion Supported (all coordinate systems [intype cluding helio-ecliptic] and algorithm codes listed in papers I, I I and I I I, with the exception of the STOKES and COMPLEX values defined in paper I, the CUBEFACE value defined in ...

... In this poster we propose a hypothesis that within fixed assumptions about internal physics (opacity, thermodynamics, nuclear reactions) a strict relation between the surface helium abundance and the entropy of the adiabatic part of the convective zone exists for all solar models. This hypothesis is verified with models under simplified physics (Christensen­Dalsgaard 1988) and with six evolutionary models computed by Christensen­Dalsgaard (1992). ... 1990, Christensen­Dalsgaard 1991). ...