... int feof(FlLE *file_pointer) - Check if end of file occurred on a stream. int ferror(FlLE *file_pointer) - Check if any error occurred during file I/0. int fflush(FlLE *file_pointer) - Write out (flush) buffer to file. int fgetc(FlLE *file_pointer) - Get a character from a stream. int fgetpos(FlLE *file_pointer, fpos_t current_pos) - Get the current position in a stream. char *fgets(char *string, int maxchar, FILE *file_pointer) - Read a string from a file. ...

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... Current APO Weather . ... Search Site . ... Information for New Users . ... Technical Staff pages . Night Logs and Mailing Lists (maintained by APO) . ... Technical Documents and Database Search . ... Observer's Documentation and Procedures . ... Problem Reporting and APO Technical Documents Database Search . ... APO Drawing/Document Management Procedures . ... APO Technical Documents Database Search . Home Astrophysical Research Consortium . ... Mail Lists (maintained by APO) . ...

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• Astrophysical Research Consortium - Apache Point Observatory

Operations in Point operations use the pointer to query sets about points, delete points in a set, and move points. In all cases where interaction is required, pressing the right mouse button with the pointer in the drawing area cancels the operation. ... Report on a point in a set . ... Press the left mouse button. ... Press Delete point with the left mouse button to activate. ... Move the pointer to the new location and press the left mouse button again to register the point's new location. ...

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• http://xray.sai.msu.ru/~ivan/gmt/man/fitcircle.html
• http://xray.sai.msu.ru/~polar/xmgr/view.html
• http://xray.sai.msu.ru/~ivan/gmt/man/gmtselect.html

Next: Catalog Construction Up: Observations and Analysis Previous: Source Detections . ... It was assumed that the highest signal gives the most likely position of the source. ... Comparing the summed map with the maps from the individual energy ranges, the one which produced the smallest error box was chosen to represent the source position, as long as was greater than 4, a level chosen to reflect a reasonable degree of confidence in the detection. ...

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• Rulers
• The Mouse Pointer
• CATS-manual

XPA access points are composed of two parts: a general class and a specific name. ... When clients communicate with XPA access points, they specify which access points to communicate with using an identifier of the form: class:name All registered XPA access points that match the specified identifier will be available for communication (subject to access control rules, etc.) ... These socket identifiers are displayed as the fourth argument in the xpans display of registered access points. ...

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• Getting Common Information About Access Points
• SAO RSDC Home Page - RRA - PSPC
• Select a circle around the central point source

... File format . ... The p12mProg is the AO control program for the 12 meter telescope. ... the time from the tick, till when we complete the status read from the device. ... P12M_STAT_BLK struct (read from controller via group read at tick) . ... azimuth master 32bit status word . ... dbl . ... azimuth error read from controller. ... azimuth velocity read back from controller deg/sec . ... elevation position read back from controller. stBlk.elErr_D . ... elevation velocity read back from controller . ...

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• vxWorksPrograms
• byu phased array feed.

... Abstract This routine locates the point on the surface of an ellipsoid that is nearest to a specified position. ... Brief_I/O VARIABLE I/O DESCRIPTION -------- --- -------------------------------------------------- positn I Position of a point in bodyfixed frame. a I Length of semi-axis parallel to x-axis. b I Length of semi-axis parallel to y-axis. c I Length on semi-axis parallel to z-axis. npoint O Point on the ellipsoid closest to positn. alt O Altitude of positn above the ellipsoid. ...

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• Pointing Information and Aperture Locations
• CSPICE Routines: NCPOSR_C
• CSPICE Routines: NCPOS_C

... The routine returns the offset (deltaX, deltaY) from the linear grid position for a specified detector location. ... the distortion (deltaX, deltaY) at the detector location (rawX, rawY) is derived from the distortion map stored in the extension FILTER-FilterId (e.g. FILTER-U, FILTER-V, FILTER-GRISM1 etc.) ... interpolate the extracted distortion points (RAWX_OFF ,RAWY_OFF ) and calculate the distortion (deltaX,deltaY) at the requested postion (rawX, rawY) . ... deltaX, deltaY . ...

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• Spatial coordinate systems
• Example 3: Point source with explicit position

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Moon . ... Space Flight . ... Science Fiction . UFOs and Fringe Science . Monthly Sky Notes . ... NASA's Cassini spacecraft obtained this image of Saturn's moon Helene on June 18, 2011. Image credit: NASA/JPL-Caltech/Space Science Institute) . ... Your email address will not be published. ... Email * . ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

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... Classes . ... casa::MMapfdIO . ... MMapfdIO (int fd, const String &fileName) . Map the given file descriptor entirely into memory with read access. ... getReadPointer ( Int64 offset) const . ... const void* casa::MMapfdIO::getReadPointer . ... The seek and write functions should be used to extend a file. void* casa::MMapfdIO::getWritePointer . ... The file name is only used in possible error messages. void casa::MMapfdIO::mapFile . ... Unmap the file. virtual void casa::MMapfdIO::write . ...

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• USNO/ATNF_VLBI
• casacore: casa/IO/MMapfdIO.h Source File
• Workshop 2001 - exercise 1

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Laser pointer safety . ... The laser pointer came to the rescue. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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• How big are the Lagrangian points? I hear of telescopes orbiting at a certain
• lagrangian points | Astronomy.com
• Transit of Mercury | Astronomy.com

... With enough velocity, a spacecraft can break loose from the Earth's gravity and enter an orbit around the Sun, like that of a planet. If it then orbits the Sun with the same period as the Earth--one year--it may keep a fixed position relative to Earth. ... If the distance is just right--about 4 times the distance to the Moon or 1/100 the distance to the Sun--the spacecraft, too, will need just one year to go around the Sun, and will keep its position between the Sun and the Earth. ...

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... With enough velocity, a spacecraft can break loose from the Earth's gravity and enter an orbit around the Sun, like that of a planet. If it then orbits the Sun with the same period as the Earth--one year--it may keep a fixed position relative to Earth. ... If the distance is just right--about 4 times the distance to the Moon or 1/100 the distance to the Sun--the spacecraft, too, will need just one year to go around the Sun, and will keep its position between the Sun and the Earth. ...

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• Two points (INTERBALL-1 and MAGION-4) observations of magnetopause motion
• Flight to Mars: How Long? And along what path?
• Transits of Venus

... 24 } Line { SrcBlock sin SrcPort 1 DstBlock func1 DstPort 1 } Line { SrcBlock Fcn SrcPort 1 Points [0, -55] DstBlock func DstPort 1 } Line { SrcBlock (G*M) ^1/2 SrcPort 1 Points [25, 0] DstBlock func DstPort 3 } Line { SrcBlock func SrcPort 1 Points [40, 0] Branch { ...

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These observations are aimed at fully charactering FORS1 photometric system (UBVRI zero-points, color-terms and extinction coefficients) for the Tektronix 2048x2048 pixel CCD (24µm px) . To this aim, the two Landolt/Stetson photometric fields SA95 and SA101 will be observed on a number of epochs and at different airmasses during February and March 2007. ... SA101 . ... OBs for SA101 have to be observed during evenigh twilight (exceptions are expected for the second half of March) . ...

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• ESO VLT Visitor Focus
• Load point data
• A visual tour

... Positions in 2000 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2001 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2002 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2003 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2004 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . ...

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• The Human Orrery
• Armagh Observatory
• Observations and Data Reduction

This section contains information of how user agents should treat control characters and other special characters. ... There are 256 character positions in the Latin-1 encoding. ... It consists of the space character, 186 characters that form a subset of the graphic characters in ISO 6937/2 (1983), and four additional characters that are intended for inclusion in ISO 6937/2. ... Certain characters are taken to have special meaning within the context of an HTML document. ...

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• MicroEMACS Quick Reference
• To define the 'region'
• Understanding the location of linked directories

... Up: Archives and Information Services . Previous: Search and Retrieval of the AXAF Data Archive on the Web using Java . ... Our Web interface to the HST archive (WDB) was substantially augmented during the past few months: A seamless integration of Java applets and CGI interfaces to the database now allows basic manipulation and visualization of data. ... These applets only require a common Web browser and offer very helpful features to facilitate archive data selection. ...

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• On-line Access to Very Large Catalogues
• Spatial Structure of NGC 6822: An Example for Statistical Modeling of
• A Graphical Field Extension for sky

Hide Zen home . ... Parameters: table and index descriptors . ... Parameters: index descriptor, value, pointer to table record . ... Also rebuilds internal keys if needed (index is locked when rebuilding). ... These are base methods for search in index - create scan, finish scan, repeat scan. ... Restore one WAL record. Parameters: LSN (LogSequenceNumber), WAL record . ... GiST has no direct access to tables, only via pointers ( the number of page and the number of record on the page) to records. ...

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• APOD: September 8, 1999 - A Superior Conjunction Of Mercury
• Zen: Tsearch V2 in Brief
• APOD: 2004 November 22 - Swift Launches

... astro-ph . ... Statistical Characterization of the Chandra Source Catalog . ... The first release of the Chandra Source Catalog (CSC) contains ~95,000 X-ray sources in a total area of ~0.75% of the entire sky, using data from ~3,900 separate ACIS observations of a multitude of different types of X-ray sources. ... In addition to these traditional catalog elements, for each X-ray source the CSC includes an extensive set of file-based data products that can be manipulated interactively. ...

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