Combining separate exposures to produce a color image Separate filter images Grayscale [HeII] F469N [OIII] F502N H F656N [NII] F658N Colorized Resulting color composite Separate images are exposed through different color filters. The resulting black and white or "grayscale" images are assigned a color that can be viewed or reproduced (that may or may not be the color of the filter used for the exposure). ... Using filters that match the eye's response can result in a natural or "true" color image. ...

... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

This document contains a summary of the user interface for filtering rows in binary tables. Table filtering allows a program to select rows from an table (e.g., X-ray event list) by checking each row against one or more expressions involving the columns in the table. When a table is filtered, only valid rows satisfying these expressions are passed through for processing. ... select rows whose pha value is exactly 10 . ... 10 pha select rows whose pha value is in the range of 10 to 50 . ...

This document describes how number input can be given to tasks which request numbers from Hermes. ... list selection The following constants are implemented: pi 3.14159.... c speed of light (SI) h Planck (SI) k Boltzmann (SI) g gravitation (SI) s Stefan-Boltzman (SI) m mass of sun (SI) p parsec (SI) BLANK Universal undefined value The following mathematical functions are implemented: abs(x) absolute value of x sqrt(x) square root of x sin(x) sine of x asin(x) inverse sine ...

... arith IN intervals . This tests whether the value to which the arithmetic expression arith evaluates lies within at least one among a list of intervals with numeric boundaries. The interval list is either a single interval or a comma separated list of interval specifications. ... true . val or [ val ] . val == x . ... An example of a valid value-in-interval expression which yields true is: . ... where filter is either region or mask or any of the region selection functions . ...

... Classes . ... gTime Class Reference . This class implements time calculations. ... gTime (double ai_jDays=0) . ... gTime (const gTime &timeSrc) . ... Set the time value of the time object to the julian day of year, day. ... operator= (const gTime &timeSrc) . ... Returns the time GMT value in Julian days. ... Returns the time_t value of the gTime Object. ... Returns a gTime object setted with the actual machine time. ... gTime Object assigned with real machine time. double gTime::getGmtTm . ...

Next: Selection effects Up: Emission-line galaxies Previous: Emission-line galaxies . ... O III ] ? ... In Fig. 4 emission-line galaxies from the HSS sample are plotted in comparison with some BCGs from the SBS (Izotov et al. [ 1994 ], [ 1997b ]; Thuan et al. [ 1995 ]) and ELGs from the Case survey (Weistrop & Downes [ 1988 ], [ 1991 ]; Augarde et al. ... We tentatively classify it as a possible LINER (low-ionization nuclear emission-line region galaxies; Heckman [ 1980 ]). ... emission lines. ...

... I am developing an Informed Prefetching and Caching system as part of the kernel in which it is very important that the memory assigned to hold the data does not get swapped to disk. Without any thought to swapping I used vmalloc() to assign memory to the data structures of the Informed prefetching system. ... I later realized that most probably the pages assigned using vmalloc() were getting swapped to the disk and when I referenced them, they were brought from the disk rather than memory. ...

S.Duzhin COMBINATORICS Lecture 4: Combinatorial species According to N. Bourbaki, a structure in a set U is an element of a tower of sets over U . ... De nition. ... 1) Two species, F 1 and F 2 , are said to be equipotent, if the sets F 1 [U ] and F 2 [U ] have equal cardinality for any nite set U . ... The type generating series of a combinatorial species F is ~ F (x) = 1 X n=0 ~ f n x n ; where ~ f n = jF [n]=  j is the number of F -structures in a set of n elements considered up to isomorphism. ...

... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...

... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...

. The image is a composite of separate exposures made by the WFC3 instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges in the near infrared. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are: F105W (Y) blue; F125W (J) green; F160W (H) red. NASA/ESA/G. Illingworth/R. Bouwens/ HUDF09 Team

... 6.1 Specified, computed, and actual values . ... 6.2 Inheritance . ... Once a user agent has parsed a document and constructed a document tree , it must assign, for every element in the tree, a value to every property that applies to the target media type . ... User agents must first assign a specified value to a property based on the following mechanisms (in order of precedence): . ... By default, rules in an author's style sheet override those in a user's style sheet (see cascade rule 3). ...

... to_tsquery( [ configuration , ] querytext text) RETURNS TSQUERY . ... Query rewriting is a set of functions and operators for tsquery type. ... We'll expand query supernovae using table-driven rewriting rules. =# create table aliases (t tsquery primary key, s tsquery); =# insert into aliases values(to_tsquery('supernovae'), to_tsquery('supernovae|sn')); =# select rewrite(to_tsquery('supernovae'), 'select * from aliases') && to_tsquery('crab'); ?column? --------------------------------- ( 'supernova'...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

... The <MATH> element is used to include math expressions in the current line. HTML math is powerful enough to describe the range of math expressions you can create in common word processing packages, as well as being suitable for rendering to speech. When rendering to fixed pitch text-only media, simple text graphics can be used for math symbols such as the integration sign, while other symbols can be rendered using their entity names. ... These elements are used override the default rendering. ...

... Bit Fields . Bit Fields: Practical Example . ... NOTE: The combination of pointers and bit-level operators makes C useful for many low level applications and can almost replace assembly code. ... To illustrate many points of bitwise operators let us write a function, Bitcount , that counts bits set to 1 in an 8 bit number ( unsigned char ) passed as an argument to the function. int bitcount(unsigned char x) { int count; for (count=0; x != 0; x>>=1); if ( x & 01) count++; return count; } . ...

OptInt PmWiki : Pm Wiki / Conditional Markup . ... current page is named " PAGENAME " . ... true if current page name matches the regular expression . ... The name and group conditionals will work even for an included page, as the "name" and "group" conditionals always check the currently displayed page, as opposed to the page that the markup appears in. ... can be used with the name and group conditional markups, thus: . ... current page is in group PmWiki or a group beginning with PmWiki . ...

... Timothy L. Kopra (Colonel, U. S. Army, Ret.) NASA Astronaut . ... In this position, he primarily served as an engineering liaison for space shuttle launch operations and International Space Station hardware testing. ... He then served in the Space Station Branch of the Astronaut Office, where he was involved in the testing of crew interfaces for two space station pressurized modules as well as the implementation of support computers and operational Local Area Network on the station. ...

... Document Title | Document Number | ... The code uses fields: category, system, subsystem, EMA, vendor, and a sequential number. ... Previous Document Number This is a TEXT field and represents the document number that preceeds the found document in the set of original documents supplied by the engineer/vendor. ... Next Document Number This is a TEXT field and represents the document number that follows the found document in the set of original documents supplied by the engineer/vendor. ...