... There are number of features that can be set by the user in the Sparkle Dialog box. ... The Sparkle plug-in computes the luminosity (level of whiteness) of each pixel in the image (the user can see this when the progress window labeled Generating luminosity array... is displayed). ... The threshold value is currently a slider/text field pair which have a precision of .0001. ... Like the Threshold value, the Flare Intensity has both a slider and a text input field for specifying its value. ...

... 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 ). ... sin 2 f + cos 2 f = 1 . ... 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 . ...

The azimuth encoder rack gear is mounted on the inside of the azimuth ring girder. The azimuth encoder turns on this gear as the azimuth moves 0 to 720 degrees. ... The software assumes that this arc length along the encoder rack gear is correct (at a constant radius of 127/2 feet). The error in the radius of the rack gear becomes an azimuth error. To measure the error in the azimuth encoder rack gear, jon hagen built a proximity sensor. ... To compute the az encoder runout error: . ...

... Class . ... FIELD | ... java.lang.Object ij.process.EllipseFitter . public class EllipseFitter . ... double . angle . ... Initialized by makeRoi() . ... drawEllipse ( ImageProcessor ip) . ... makeRoi ( ImageProcessor ip) . ... Field Detail public double xCenter . ... public double angle . ... The fit parameters are returned in public fields. public void drawEllipse ( ImageProcessor ip) . Draws the ellipse on the specified image. public void makeRoi ( ImageProcessor ip) . ...

homes/emiddelb/local2/bin/python # Task to rotate a vector specified on command line n times through # angle p and calculate the vector sum import sys, math x= float ( sys.argv [1]) y= float ( sys.argv [2]) n=int( sys.argv [3]) angle = float ( sys.argv [4]) print \nRotate vector (%f, %f) %i times by %f degrees % (x, y, n, angle ) # From now on, angle is in rad angle =math.pi* angle / ...

... The near-UV prism (NUVOP) transmits only above 1600 with a wavelength dispersion / around 100 at 2500 . ... The wavelengths determined from objective prism spectra using these dispersion curves should have a / error of <1% for f /96 spectra. ... 4000 . ... Overall, photometry of objective prism spectra should have errors of about 10% or less for wavelengths below 4000 for NUVOP spectra and below 2500 for FUVOP spectra, provided that the position of the undispersed target is known to within a pixel. ...

... Bad Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... The length of the shadow depends on the height of an object (like a mountain or a human) and how high up the Sun is. ... We can calculate the length of the shadow if we know the Sun's angle above the horizon and the object's height. ... The Earth spins 360 degrees in 24 hours, which means it spins 1 degree in 4 minutes; that in turn means the Sun moves 1 degree every 4 minutes in the sky. ...

... If a triangle has sides of length ( a,b,c ), with sides ( a,b ) enclosing an angle of 90 degrees ("right angle"), then . ... A diagonal cut divides it into two right-angled triangles with short sides a and b , and the area of such a triangle is therefore (1/2) ab . Now look at the square on the left constructed out of four ( a,b,c ) triangles. ... As the drawing on the right shows, that area can be divided into 4 triangles like the ones before, plus a small square of side ( a-b ). ...

pa is the position angle of the major axis of the isophote 25 mag/arcsec**2 in the B-band for galaxies. It is counted from the North ( pa=0 ) toward East between 0 and 180 . The position angle is defined in the B1950 coordinate system, but the differences introduced by the precession are generally within the precision of the measurements. The length of the major axis is defined in the parameter logd25 , and the axis ratio in the parameter logr25 . ... HyperLeda . ...

... Mass . ... Charge . ... Constants . ... Euler's constant: = 0.5772156649 . ... Planck constant: h = 6.62620 ? ... Elementary charge: e = 1.602189 ? ... Universal gas constant: R = 8.31441 J mol -1 K -1 . Boltzmann's constant: k = R/N 0 = 1.380662 ? ... Gravitation constant: G = 6.6742 ? ... Solar radius: R = 6.9599 ? ... Solar mass: M = 1.989 ? ... 1 statute mile = 5280 ft = 1609 m . ... 1 solar mass (M ) = 1.989 ? ... 1 elementary charge (e) = 1.602189 ? ... Copyright 2006 Mario van den Ancker. ...

polimplot -- Plot a polarization vector map . ... inpol = "" [name] . Input linear polarization image (in %) to plot. inpopa = "" [name] . Input image for position angle of linear polarization vectors (degrees). poi_err = "" [boolean] . ... Name of corresponding polarization position angle error image (degrees). ... This task is a flexible tool for plotting a polarization vector map from two images of the polarization and the position angle of the polarization vector. ...

... This gives us another handle on how distant the stars are. ... Stars differ not only in distance, but also in apparent brightness. ... Ranking stars by brightness . ... The brightness of the star decreases as the square of the distance. ... At what distance would a 100-watt light bulb have the same brightness as the brighter stars? ... So if the distance of the 100-watt light bulb was 5 kilometers, the distance of the brighter stars would be 10,000,000,000,000 kilometers, or about a light-year. ...

... Rotate qpoe image around an axis perpendicular to the image, normally about the origin (0,0). ... The sample shows rotation of the qpoe image by 20 degrees. cl> xray xr> ximages xi> qprotate input qpoe file name: xdata$snr.qp region descriptor: <cr> angle through which to rotate (0.): 20 output qpoe file name: xnr.rot.qp event definition (large): <cr> . ... One practical application of qprotate is to align qpoe images in which the satellite had different roll angles. ...

Image Quality and Stability Criteria Alex Rea adr34@cam.ac.uk Cavendish Lab oratory, University of Cambridge FTT Meeting Friday 7th May 2010 Alex Rea ( Cavendish Labs, Cambridge ) Image Quality and Stability Criteria 7th May 2010 1/9 Off-Axis Angle · MTF reference surfaces · MRTD test systems · Spectrograph mirrors ... Image Quality and Stability Criteria 7th May 2010 9/9 Alex Rea (Cavendish Labs, Cambridge) ...

... We have determined the correlation coefficient between tree-ring index values and the sunspot cycle length for 69 tree-ring data sets from around the world of greater than 594 years duration. ... Similar matrices, formed from the same data, but randomly scrambled, provide a control against which we can draw conclusions about the influence of the solar cycle length on climate with a reasonable degree of confidence. ...

Bright Planets, Crescent Moon . ... Credit Copyright: Jay Ouellet Explanation: Early risers are currently enjoying the sight of dazzling Venus , near the eastern horizon as the morning star . ... It also includes a crescent Moon and Saturn (lower left). ... Though the Moon has moved on, the tight triangle formed by Venus, Saturn, and Regulus (top), alpha star in the constellation Leo, will continue to look impressive in early morning skies over the next few days. ... NASA Official: Jay Norris. ...

previous next contents properties index . ... Inherited? ... inherit . ... yes . aural . ... visual . ... none | ... length> ]{1,2} | ... block-level and replaced elements . ... see individual properties . ... table' and 'inline-table' elements . ... length> <length> ? ... the value of the 'color' property . ... auto | ... positioned elements . ... table-caption' elements . ... yes, the computed value is inherited . ... all elements except non-replaced inline elements and table elements . ...

Crystals of Siberia Solutions for laser systems CRYSTALS of SIBERIA Ltd. ... LBO crystal, SHG Dimensions: 8 mm(W) x 8 mm(H) x 25 mm(L) Cutting angle: Theta: 90 degrees Phi: 11.6 degrees Anti-reflection Coating: DBAR@1064+532 nm both sides Quantity: 1 element Price: $2070 per element Item 2. ...

IV International Astronomy Olympiad . ... Text of these problems is available also . ... To solve every problem you may use constants and well-known values you know by heart. ... The apparent diameter of the Moon, as seen from the Earth, is 31'. ... Can you observe a star with magnitude . ... Consider the stars as black bodies. ... Estimate the diameter of a black hole constructed using this patent from a ship with the mass of 5000 tn (1 tn = 1000 kg). ... What stars would you observe this nigth? ...

... Ranger 8 was designed to achieve a lunar impact trajectory and to transmit high-resolution photographs of the lunar surface during the final minutes of flight. The spacecraft carried six television cameras, an optical earth sensor and high-gain antenna for optimum communications, and solar panels to provide power, as well as additional engineering equipment. ... Sufficient video bandwidth was provided to allow for rapid framing sequences of both narrow- and wide-angle television pictures. ...