The position of the objects on the sky were generally measured to a precision between 1 and 4 arcsec. ... For the stars, the position is always at epoch 2000, whatever J2000 or B1950 coordinates are printed. ... The celestial position is given as coordinates in 4 different systems: . ... B1950 . ... Galactic coordinates in the reference frame called "new" system, adopted by IAU in 1958. Galactic pole at B124900.0+272400, node at ra=282.25,l=33 deg (inclination 62.6 deg). ... 1 arcsec . ...

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• HyperLEDA documentation: compilation of cz measurements (a110)
• HyperLEDA documentation: compilation of morphology (a102)
• HyperLEDA documentation: compilation of distance measurements (a007)

... Classes . ... Class List . ... casa . casa::SolarPos . ... Solar position class and calculations. ... SolarPos (const SolarPos &other) . ... operator() ( Double epoch) . ... Barycentric position of Earth. const MVPosition & casa::SolarPos::baryEarthDerivative . ... Barycentric position of Sun. const MVPosition & casa::SolarPos::barySunDerivative . ... Double casa::SolarPos::checkEpoch [private] . ... Double casa::SolarPos::checkSunEpoch [private] . ... Double casa::SolarPos::deval [3] [private] . ...

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• casacore: casa::AxesMapping Class Reference
• casacore: casa::DirectoryIterator Class Reference
• casacore: casa::ReadOnlyArrayIterator< T > Class Template Reference

lsst.coordConv љ unknown . ... PVT . ... coordConv::PVT Class Reference . include < pvt.h > . PVT (double pos , double vel , double t ) . ... operator+= ( PVT const &rhs) . ... operator+= (double const &rhs) . ... operator+ ( PVT const &rhs) const . ... operator+ (double const &rhs) const . ... Definition at line 18 of file pvt.h . ... Definition at line 152 of file pvt.h . PVT coordConv::PVT::operator* . ... Definition at line 132 of file pvt.h . ... Definition at line 108 of file pvt.h . ...

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• lsst.coordConv: coordConv::Coord Class Reference
• lsst.tcc: tcc::PVAJT Class Reference
• lsst.tcc: tcc::AxeLim Class Reference

Modules | ... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Developer Documentation . ... This is a first attempt at writing the lessons I learned when trying to convert the mod_mmap_static module to Apache 2.0. ... create per-server config structures */ . ... merge per-server config structures */ . ... Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our mailing lists . ...

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• Question on network interfaces

Why are there different versions of CIMA? Which version of CIMA should I choose? ... There is no CIMA log in my project directory --- what happened? ... If You are a normal, happy observer, You should choose the CIMA version with the highest version number, since that version contains the latest improvements and bug fixes. ... This means that programs like the data quick-look display and various ALFA instrument displays all exist in several versions just like the CIMA observing session itself. ...

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• byu phased array feed.

Stellarium 0.12.3 . ... Classes . ... FileљStructure . ... ClassљIndex . ... StelIndexBuffer Class Reference abstract . Generic index buffer interface usable with all Renderer backends. ... virtualљ . ... voidљ . addIndex (const uint index) . ... virtual voidљ . ... index . ... virtual void StelIndexBuffer::addIndex_ . ... virtual void StelIndexBuffer::clear_ . ... virtual void StelIndexBuffer::lock_ . ... virtual void StelIndexBuffer::setIndex_ . ... virtual void StelIndexBuffer::unlock_ . ...

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• Stellarium: TextParams Struct Reference
• Stellarium: StelQGLArrayVertexBufferBackend Class Reference
• Stellarium: gSatTEME Class Reference

Optical Filters . The WFPC2 camera configuration and filter set require a substantial number of apertures for full utilization of its capabilities. ... An additional set of aperture names have been defined for use with the WFPC2 filters which require partial rotations. ... The pixel coordinates of these apertures will be reviewed on a regular basis to reflect changes in CCD and filter cosmetics. ... The aperture name is generally the same as the (rotated) filter name. ...

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• CCD Position and Orientation on Sky
• Frequently Asked Questions GPI Data Pipeline 1.0 documentation
• Observatory Support FAQ List

... M-11. sin(? ?), cos(? ... sin f = y / r . cos f = x / r . ... They are now viewed as new definitions of the sine and cosine, for the polar angle f given by x and y ( a slightly different way of formulating this definition is described further below ). ... Angle . ... Many trigonometry texts define the sine and cosine slightly differently, using the so-called unit circle . ... Then the distance AB ("the sine line") equals sin a , and the distance OA ("the cosine line") equals cos a . ...

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• Coordinates

... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > Are there order definition frames with spatial information, i.e. using 9 pinholes instead of 1? ... Science Users Information . ... Observing with ESO Telescopes . ... Science Software . ... ESO-MIDAS . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... Information resources . ...

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• DFOS: Frequently Asked Questions
• ESO - ALMA
• ESO - Observing conditions: definitions

... The spectroscopic model of the source gives , the number of photons received per cm and per second at the earth, from sky position and at energy (differential per solid angle and energy). The number of photons, , detected (per second) in pixel and in PI energy bin centered at is obtained by multiplying by the effective area and applying the response matrix: . ... The correspondence between sky position and detector coordinates depends on the telescope's pointing. ...

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• srcinfov: compute position of SouRCe in Field Of View

... Indeed, one alteration of orbits can be the outright ejection of a planet. When several big planets are orbiting a star under each other's influence, the system is inherently unstable. ... We know of no good reason why the smallest objects with fusion should have the same mass as the smallest objects that can form by themselves. ... 6) Mission Definition . ... I don't think this mission is impossible, and will suggest a definition in a future article in Mercury. ... Good luck! . ...

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• ASP: Sharing the Universe
• ASP: The Biggest Bang of Them All
• ASP: Indiana Jones and the Astronomers of Yore

... SPICE System Documentation . Comprehensive set of SPICE System documentation including tutorials, subroutines and data formats descriptions, etc. Other related home pages: . Navigation and Ancillary Information Facility at JPL . MARS-96 Space Mission . ... Please, forward comments and questions about information on this page and all descending NAIF and M96 SPICE implementation pages to NAIF group at IKI . naif@arc.iki.rssi.ru . ...

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• Isotropic boundary (Oulu)
• Basic definitions [Oulu]

... The HST uses an onboard model of its orbit to perform in real-time various control functions relating to spacecraft operations and observation support. ... New coefficients for the ephemeris are updated every other day, and are archived as FITS keywords for each HST observation data set. Using these coefficients,an observer can perform a variety of calibration and characterization calculations relating to the orbital position and velocity of the telescope. ...

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• ADASS 2003 Conference Proceedings

This WWW form allows the user simplified access to images produced by the NRAO/VLA Sky Survey (NVSS). This service determines which NVSS image is desired based on a celestial position and returns either the image directly or a Web page with a link to the file. ... The NVSS Postage stamp (small FITS file) server can be used to obtain images with other geometries.) ... Web browsers use external viewers to display files like FITS images which they do not understand. ...

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• VLSS Image ftp service Documentation Help for VLSS Image ftp service
• OptInt PmWiki : PmWiki / Documentation Index
• OptInt PmWiki : Documentation Index

... To run the <LAYER> version of the example, select: flower.htm . ... However, if the page had several layers with absolute positions, and you wanted to place another layer in a relative position to one of the existing layers, you could use inline JavaScript to calculate the value for LEFT or TOP . ... In this example, there is really no need to use inline JavaScript to position the last flower layer, since you could just let the TOP value default to its natural value, as in the other flower layers. ...

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• Background color examples
• Index
• Conformance: requirements and recommendations

... About NEdit . ... Macros . ... Browse on Line . ... Here's a selection of macros for the NEdit text editor. ... If you need help on adding macros to NEdit, click here to get to the Help section . ... Get previous . ... Select word/line/file . ... Add string to line start . ... Next and Previous NEdit window . ... Remove newlines and rewrap selection . ... Remove string from line start . ... Add/Remove # comment . ... Add/Remove Ada comment . ... Run LaTeX . ... Add <pre> tags and convert . ...

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• Question/answer exercises
• Dome position

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

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• SADT - Survey Area Definition Tool - for VISTA

... 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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• Simon Jeffery's Software Store: TAP library
• Human Orrery
• Armagh Observatory

... Impact on source motion in Galactic coordinate system is given by Kovalevsky (2003), Malkin (2011) l cos b = -A sin l, b = -A cos l sin b, where A = R0 02 /c is the galactocentric acceleration called hereafter the GA constant. ... We just have to return to the traditional many-centuries-old astrometric practice of modelling the position of a celestial object as a linear trend with two parameters: the position at the initial (conventional) epoch and the apparent (proper) motion. ... 2011). ...

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• http://www.gao.spb.ru/english/as/j2014/presentations/iddink.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/lukashova.pdf
• http://www.gao.spb.ru/english/personal/malkin/publ/zm12i.pdf

SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Astronomical Institute Seminars . ... All-Russian Astronomical Olympiad (in Russian) . ...

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• APOD: 2006 August 28 - Eight Planets and New Solar System Designations
• FTS Limitations
• Lighting plug-in