... Consequently, it is inappropriate to expand and in ordinary spherical harmonics. The proper expansion expresses both and simultaneously in terms of a particular order of generalized spherical harmonics. ... Generalized spherical harmonics start at , and for each , . ... Generalized spherical harmonics obey a sum rule analogous to a familiar one for ordinary spherical harmonics, but it includes an explicit phase factor which depends on the orientation of the two lines of sight. ...

General Information . ... The conference is organized by the Sternberg Astronomical Institute (SAI) of Moscow University and the IAU Working group "Site-testing Instruments" . ... Use of site data in telescope operation and adaptive optics. ... Recent conferences on this subject (2007, 2008) demonstrated great interest of the community, hence the need for a new meeting. ... Unlike previous recent conferences, this meeting will cover all aspects of site monitoring for optical/IR astronomy. ...

Laboratory of Physical-Chemical Basis of Crystallization . ... the melt growth of single crystals of inorganic compounds, mainly metal chalcogenides. a physical-chemical study of these compounds and systems where they originate of in order to facilitate their single crystal growth, or to achieve some desirable properties of these crystals. preparation of semiconductor, mainly metal chalcogenides, nanostructures and investigation of their properties. ...

The following general subroutines belong to the category FILES: . Related to files on disk'' In parentheses the name of the source file is given. AXPROPS . Return structure with axis properties for a set. ( axprops.c ) . ... Extends files to a certain number of bytes. ( fextend.c ) . ... Translates GIPSY filenames to legal filenames (if necessary). ( fname.c ) . ... Determines the size of a file in bytes. ( fsize.c ) . ... Truncates a file to a specified number of bytes. ( ftrunc.c ) . ...

... How to ingest general/static calibration files . How to change names of already ingested calibration files . General or static calibration files are usually delivered together with a pipeline installation. ... For safety: copy all general/static calibration files into e.g. $DFO_CAL_DIR/gen_newnames and work there . ... Fix header keywords : use modhead and/or replacekey and verify with dfits . ... Hint when using modhead . ... Rename : use renameProducts to create new names . ...

General Forum Message . ... FAQ . ... The “Jocaxian Nothingness” F.A.Q. Frequently asked questions about the Jocaxian Nothingness “JN” . ... P2- There are no laws of any kind. ... 4- Could the Jocaxian-Nothingness feature of not having any rules or laws be a rule itself? ... The nothingness people usually think of, which I called “the trivial nothingness” (TN) is infinitely more unlikely to happen as the origin of the universe than the JN. ... www.astronomy.net . About Astronomy Net | ...

A tree for site navigation will open here if you enable JavaScript in your browser. ... ABOUT ST-ECF . ... On this page we provide implementations of the the signal-to-noise ratio estimator DER_SNR following the definition set forth by the Spectral Container Working Group of ST-ECF, MAST and CADC. A detailed description and discussion of the algorithm can be found in the Issue #42 of the ST-ECF newsletter . ...

GiST home | Introduction | ... GiST is a height-balanced tree structure with tree nodes containing (p, ptr) pairs, where p is a predicate ( attribute ),which is used as a search key, and ptr is the pointer to data for a leaf node or a pointer to another tree node for a non-leaf node. ... Every node contains between min and max index entries unless it is the root . ... For each index entry (p, ptr) in a non-leaf node, p is true when instantiated with the values of any tuple reachable from ptr . ...

... The MIDAS system is built along lines which should allow easy integration of complex analysis algorithms as well as allowing greater flexibility in interactive use and in the creation of user specific procedures from the basic building blocks. ... The present version which became available in 1984 follows a similar philosophy in its application program interfaces, but has been expanded to the new Standard Interfaces which have a broader base than previously. ...

... This is followed by astrometric columns - ie columns for the Right Ascension, declination, position error, galactic longitude and galactic latitude. There then follows columns for the computed significance (signal-to-noise) of each source for each of the filters present. Columns for the instrumental magnitudes and colours for each filter, follow. ... Columns for the standard magnitudes and errors, for each filter, follow. ... Standard colours and errors then follow. ...

Next: Extinction efficiencies: general behaviour Up: Optical properties of cosmic Previous: Optical properties of cosmic . It is now evident that observed interstellar extinction cannot be explain using particles of only one kind. ... The intensity of radiation after passing a dust cloud is equal to . ... The interstellar extinction is . ... Next: Extinction efficiencies: general behaviour Up: Optical properties of cosmic Previous: Optical properties of cosmic root 2003-04-09 ...

... What follows is the list of talks at the IUM general seminar "Globus" delivered during fall semester, 2005. ... In the 1960s, H. Steinhaus asked whether every closed curve in space has a pair of parallel tangent lines; a curve without parallel tangents is called a skew loop. ... A skew brane is a multidimensional analog of a skew loop: it is a codimension 2 submanifold without parallel tangent spaces. ... There exist totally skew n-dimensional spheres in 3n+2-space, and in 3n+1-space if n is odd. ...