... connection points . ... The point P3 is the connection between the horizontal and vertical actuators and is the axis of rotation for the tail gunner motion. processing: survey/020204/reduc We can compute P3,P5 (the moveable points) in dome centerline coordinates if we have the actuator distances and we know the positions of the above connection points in dome centerline coordinates for a given position of the tertiary (say the nominal focus position).(see actuator distances to dome centerline ). ...

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... The system is based on two straight lines ("axes"), perpendicular to each other, each of them marked with the distances from the point where they meet ("origin")--distances to the right of the origin and above it, the origin being taken as positive and on the other sides as negative (see drawing below). ... One system (" polar coordinates ") uses the length r of the line OP from the origin to P (i. e. the distance of P distance to the origin) and the angle that line makes with the x-axis. ...

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• Coordinates--lesson plan #9

... An OBJECT column gives the name of the object observed (usually a star name). ... In critical cases, it is common practice to measure sky on two or more positions around a target object, and these positions must be identified. ... A general treatment of this problem requires a column called OBJECT, bearing the usual name of the object (as in the star tables); a column labelled STARSKY, to distinguish between star+sky, star alone, or sky alone; and additional columns to identify the sky position. ...

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... Milky Way . ... Map of the Milky Way (based on data from NASA's Spitzer Space Telescope) showing its two major stellar arms and central bar. ... ТљIn written science fiction, one often encounters another navigational convention, where towards the Galactic Centre is described as т??Corewardт??, away from the Centre towards the rim of the Milky Way is т??Rimwardт??, objects in the direction of the Galaxyт??s rotation are т??Spinwardт??, while objects in the opposite direction are т??antispinwardт?? ...

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.

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• http://zebu.uoregon.edu/2003/hum399/lec05.html
• Astronomy HyperText Book: Planetary Motion

... The described algorithm is suitable for measurements of complex images of stars. ... a) the zero-based number of stars in the complex (multicentric) image, . b) set of preliminary coordinates - x i , y i , for all stars, index i is number of a star, . ... i - index of a star in the complex image; . ... These parameters are calculated by a nonlinear method of a least squares.The main output parameters of this algorithm are x i , y i ; where the index i is number of a star in the multicentric image. ...

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... Tonight's Sky . ... Search By Name Enter coordinates Use current location . ... Observing . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do astronomers use Cepheid variables to measure distances? ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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• IBEX measures changes in the direction of interstellar winds buffeting our
• т??Eye of Sauronт?? provides new way of measuring distances to galaxies |
• Length of exoplanet's day measured for first time | Astronomy.com

... 2000 October 19 . The Farthest Explosion Yet Measured . ... What is known is that satellites across our Solar System reported on 2000 January 31 a tremendous explosion of gamma rays had occurred towards some previously uninteresting direction. ... The VLT not only recorded an optical counterpart , shown above , but also was able to estimate that the cosmologically-induced redshift was an astonishing 4.5 -- placing GRB000131 farther across the universe than any explosion so measured. ...

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• APOD: April 17, 1996 - NGC 7293: The Helix Nebula

... 19.10.2000 . ... What is known is that satellites across our Solar System reported on 2000 January 31 a tremendous explosion of gamma rays had occurred towards some previously uninteresting direction. Soon one of the largest optical telescopes on Earth, a VLT in Chile, began to peer in the direction of the gamma ray burst . ... Publications with keywords: gamma-ray burst - cosmology - explosion - afterglow . Publications with words: gamma-ray burst - cosmology - explosion - afterglow . ...

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• Астронет > The Farthest Explosion Yet Measured
• XWare > APOD

... Posts tagged ?distance measure? ... From arxiv/math.st:0708.0169v1 . Data-Driven Goodness-of-Fit Tests by L. Mikhail . ... ArXiv] Data-Driven Goodness-of-Fit Tests, Aug. ... Tags: consistency , distance measure , distribution , goodness-of-fit test , inverse problem , Neyman type , regularity condition , score . Category: arXiv , Fitting , Uncertainty | 1 Comment . ... Entries RSS . Comments RSS . ... vlk on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

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• The AstroStat Slog Blog Archive Differential Emission Measure [Eqn]

... IDL tvimage,im1,/keep_aspect, position = pos ; IDL imcontour,im2,h2,nlevels=7,/Noerase,/ TYPE ,position = pos ; ; PROCEDURES USED: ; CHECK_FITS, EXTAST, GETROT, TICPOS, TICLABEL, TIC _ONE, TICS, XYAD ; CONS_RA(), CONS_ DEC (), ADSTRING() ; ; REVISION HISTORY: ; Split from May 2003 version of imcontour.pro ; M. Perrin July 2003 ; ;- ;On_error,2 ;Return to caller if N_params() LT 2 then begin ;Sufficient parameters? print,'Syntax - imcontour, im, hdr , [ / TYPE , /PUTINFO, ...

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• CSPICE Routines: LATREC_C
• CSPICE Routines: RADREC_C
• CSPICE Routines: RECRAD_C

... Subject of Astronomy. ... Basis of Spherical and Practical Astronomy. ... Celestial Sphere. ... Changes of Star's Coordinates as a Result of Daily Rotation of Celestial Sphere. ... Time Measuring. ... Changes of Solar Equatorial Coordinates. ... Stellar Day, Stellar Time. ... Real Solar Time. ... Mean Solar Time. ... Connections between Stellar and Mean Time. ... Apparent Path and Configuration of Planets. ... Ways of Energy Transportation to Stellar Surface.Basis of Spectral Analysis. ... Solar...

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• Introduction to Astronomy

Program: TRACE Purpose: TRACE plots image values at user given positions as function of distance to a plot centre (in 2-d (sub)sets). Category: ANALYSIS, PLOTTING File: trace.c Author: M.G.R. Vogelaar Keywords: INSET= Give set (, subset): Only one subset is allowed. ... XYBOX= Give size of box around one pixel: [3,3] The resulting value at a selected position is an average of the pixels in the defined box around that position. ... POSITION= Give position x, y: Physical values are allowed. ...

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• casacore: measures/Measures/ParAngleMachine.h Source File
• casacore: measures/Measures/MCFrame.h Source File
• HI Line Measurements of Pulsars (Paper I)

Astronomy Terms - To Help You Study The Universe . Articles | ... Learning about the universe, or the study of astronomy, can be fun for the individual or for the whole family. ... Learning a few simple terms will help you with this fascinating study. ... You will use a telescope or binoculars for your observation of the sky at night. ... Celestial Terms . ... Meteor or a shooting star – the light caused when a meteoroid burns up in Earth's . ... www.astronomy.net . About Astronomy Net | ...

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• Magnification (Power) And Using Eyepieces - an Astronomy Net Article
• Astronomical Distances, AstroGuide Listing
• Communications For Your Astronomy Event - an Astronomy Net Article

... The greater the distance, the smaller the parallax. ... That triangle has the same proportions as the much larger triangle ABC, and therefore, if the distance B'C to the thumb is 10 times the distance A'B' between the eyes, the distance AC to the far landmark is also 10 times the distance AB. ... The most distant objects our eyes can see are the stars, and they are very far indeed: light which moves at 300,000 kilometers (186,000 miles) per second, would take years, often many years, to reach them. ...

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• The Round Earth and Christopher Columbus
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• Trigonometry beyond 90 degrees

... Home Education Classes AAA Winter Astronomy Class: Measuring Distances in Space тАУ Dec 2015 тАУ Feb 2016 . ... Classes . AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . AAA Winter Astronomy Class: Measuring Distances in Space тАУ Dec 2015 тАУ Feb 2016 . AAA Spring Astronomy Class: The Physics of Astronomy тАУ February - March 2016 . ... This MonthтАЩs Sky тАУ April 2016 . ... Dec. ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ...

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Converts from 3D space to a simpler 2D space – orders by magnetic field line (assumes dipole geometry). McIlwain's shell parameter (L) is a measure of “equatorial radius.” ? labels a field line, even in a non-dipole field. Magnetic Field Intensity (B) – measure of “latitude.” L – Undefined for open field lines. B (static field model) doesn’t sufficiently order the XMM data due to dynamic environment . ... Previous slide . Next slide . Back to first slide . ...

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• SourceListFile
• Description

... Viking Orbiter Mission 1975 . ... YY = sequential number of image during orbit . FILTER . ... Scale of one pixel at center of image . ... Azimuth of (direction to) North, measured clockwise from zero line defined by a horizontal line drawn from the center of the image perpendicular to the right edge . SUN AZ . Azimuth of (direction to) Sun, measured clockwise from zero line defined by a horizontal line drawn from the center of the image perpendicular to the right edge . ... SUNS LS . ...

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• The Face on Mars
• Quasar PG1115+080 And Gravitational Lens- PR-37

pswiggle - Plot anomaly along track on a map pswiggle xyz _ files -J parameters -R west / east / south / north [ r ] -Z scale [ -A direction ] [ -B tickinfo ] [ -C center ] [ -D gap ] [ -E azimuth / elevation ] [ -G fillrgb ] [ -H [ nrec ] ] [ -I fix _ az ] [ -K ] [ -M [ flag ] ] [ -N ] [ -O ] [ -P ] [ -S [ x ] lon0 / lat0 / length [ units ] ] [ -T ... Je lon0 / lat0 / scale (Equidistant). ... I Set a fixed azimuth projection for wiggles [Default uses track azimuth, but see -A ]. ...

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• http://xray.sai.msu.ru/~ivan/gmt/man/grdgradient.html
• http://xray.sai.msu.ru/~ivan/gmt/man/psrose.html

TABLE: The Constellations . ... The Hunting Dogs . ... But the stars that make up Orion lie at very different distances from the Sun. ... String . ... Tape or glue the string to the top of the cardboard so that the "star" will not move. ... Name of Star . ... Other Constellation Activities Given a star chart without constellation figures marked on it (whether real star charts or made-up star patterns), students can invent their own constellations, looking for patterns in the stars that appeal to them. ...

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• ASP: Biography of a Star: Our Sun's Birth, Life, and Death
• ASP: A Taste of Real Astronomy ? The ESA/ESO Astronomy Exercises
• ASP: Star Science in the Autumn Sky