from visual import * from time import clock from random import random from random import uniform # Stars interacting gravitationally # Program uses numpy arrays for high speed computations wid=900 heit=600 Nplanets = 100 # change this to have more or fewer stars G = 6.7e-11 # Universal gravitational constant # Typical values Msun = 2E30 Rsun = 2E9 Rtrail = 1e8 L = 4e10 vsun = 0.8*sqrt(G*Msun ...

lsst.tcc љ 1.2.2-3-g89ecb63 . ... Files . FileљList . ... python . ... mov . checkSegment.py . ... 11 љ @param[in] pA position of starting point at time t = 0 . ... 13 љ @param[in] pB position of ending point at time t = dt . ... 16 љ @param[in] doPos log test position? . ... 20 љ @param[in] axisLim axis limits (a tcc.base.AxisLim) . ... 36 љ Even if you request that position limits be checked, some paths . ... 63 љ # check position limits; expand the limit to include the starting position . ...

... 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. ...

cam.ac.uk , bojan@bnikolic.co.uk # # Initial version October 2007 # Revised 2008 # # Blow phase screens across UV data import os import math from itertools import izip import uvfits import numpy import numarray import pyfits def GenWindVector( fin , ws_px, toffset=0.0, dc= x , vismask =None): Generate the wind displacement vector list :param ws_px: ...

Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders . ... Archives . ... A postdoc job announcement from Prof. Joshua Bloom of UC Berkeley: . ... The starting salary will be commensurate with experience, and competitive with other postdoctoral positions. ... Tags: AstroStat , computer science , job announcement , job market , time series , UC Berkeley . ... Joseph Hilbe on [Jobs] postdoc position at UC Berkeley . ... Chandra Blog . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

... Positioning his camera and tripod on planet Earth, near Maricopa, Arizona, USA, astrophotographer Joe Orman created this trailing display of the ongoing sky-full-of-planets on May 3rd. He initially captured the grouping in a 20 second long time exposure recording the positions of the bright planets and stars. ... A well-known example, the Cone Nebula within the bright galactic star-forming region NGC 2264, was captured in this close-up view from the Hubble Space Telescope's newest camera. ...

... In principle, two observers on the ground can tell, by comparing the position of the same auroral arc against the background stars. ... The display stretches across Canada; just below it, in the middle of the picture, are the lights of Chicago, next to Lake Michigan. ... The Canadian scientific satellite Isis-2 (1971) carried an auroral imaging camera and discovered the diffuse aurora, a broad ribbon around the auroral oval, too spread-out to be noticed from the ground. ... Auroral Acceleration . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . The lunar phase (nearly full) will be unfavourable but a meteor storm due to the 1866 trail is extremely likely, visible from the Americas. The secondary storm, when the Earth passes through the 1767 trail, will be visible from western Europe and western Africa. Both are more than a day after the Earth passes through the orbital plane of Comet 55P/Tempel-Tuttle. ... Go to Armagh Observatory Leonid page . ...

Cover Illustration: The Visual Target Tuner (VTT) from the paper by Koratkar and Grosvenor (p. 57 ). The VTT is an interactive field-of-view visualization tool that allows the user to import images from several sources (including the NASA Extraterrestrial Database---NED, HST's Guide Star Catalogs, and the Digitized Sky Survey). Once imported the user can overlay an instrument's field-of-view positioning and orienting the target exposure visually. ... adass@ncsa.uiuc.edu ...

... overview of pyQC . ... output used by . ... All pyQC scripts and modules share a similar structure. Python offers to group functions, classes, etc. into modules which can be imported by different scripts. ... In order to avoid confusion if names are used by different (especially external) modules, the QC scripts use the 'from' statement only for pyQC modules, i.e.: . ... For other modules, the simple 'import' statement is used: . ... Python modules are also used for keeping script configuration. ...

... Miriad has a couple of tasks available for finding positions of sources (see also cgcurs in Chapter 17 ). ... It fits a 2-D parabola to the image intensities in a 3 by 3 pixel box centred on the brightest pixel in a specified region and reports the fitted location and intensity. ... Input image . ... The quality of your fit can improve significantly by selecting a snug region, and/or using the clip keyword to keep pixel values with little signal (e.g. sidelobes and noise) out of the fitting process....

The initial orbital data are distributed in the F1 format, which contains orbital elements as a the state vector (the spacecraft position and velocity vector) in the inertial frame (Standard reference of the Earths Equator and Equinox J2000). ... The Format number . 0001 . The Message number . ... 00001 . ... 001451.596 . ... 008276.384 . ... 000000.000 . ... The F1 format for this data looks as follows: . INT/ITZ/01/0001/01/00001/ . ... 001451.596/-008276.384/+000000.000/ . ...

... FIELD | ... public class FileInfo . ... static int . ... int . ... Field Detail public static final int GRAY8 . ... public static final int GRAY16_SIGNED . ... public static final int GRAY16_UNSIGNED . ... public static final int GRAY32_INT . ... public static final int GRAY32_FLOAT . ... public static final int COLOR8 . ... public static final int RGB . ... public static final int RGB_PLANAR . ... public static final int BITMAP . ... public static final int ARGB . ... public static final int BGR . ...

... January 9, 17 43.4 9.14 Moon enters umbra . ... of Moon | ... T - universal time ( TDT - UT1 = 66.0 s ); s - the angular distance between the centers of the Moon and the shadow; d - the linear distance between the Moon's center and that of the shadow in terms of the shadow's radius; P - the position angle of the Moon's disk semi-diameter directed towards the shadow's center. n terms of the shadow's radius; P - the position angle of the Moon's disk semi-diameter directed towards the shadow's center. ...

Classroom Activity: Making a Rainbow . ... When white light from the Sun or a light bulb passes through a prism, the light splits into its component wavelengths. ... Red, blue, green colored filters - if possible, cut 1x4-inch pieces of the filters for each student . ... Many students have the misconception that filters somehow dye the light a certain color. ... Younger students can draw the rainbow and make up a mnemonic for remembering the order of the colors (such as, ROY G. BIV). ...

. Images of the position of GRB080319B before the burst (left) and at the moment of maximal optical brightness (right). The transient position is marked with an arrow. Peak optical brightness made the burst visible by a naked human eye (5.3 stellar magnitude). To view high temporal resolution video of the transient seen by TORTORA camera, click here (avi).

I'd like to select a large expanse of text without dragging all the way through it with the mouse. How can I select the text between two marks? ... Using the shift key with the left mouse button, you can select all of the text between the cursor (or an existing selection) and the mouse. Position the cursor at one end of the desired selection . ... Shift+Click with the left mouse button to select the text between the cursor and the mouse . ... Server mode and nc ] [ FAQ Contents ] [ Bugs ] ...

... Liste de plan?tes . ... Serveur d' ph m rides des satellites naturels des plan tes. ... Satellites Galil en et proches de Jupiter Choisissez une version de la th?orie pour les satellites galil?ens: . ... Choisissez l' chelle de temps: UTC TT . ... Choisissez le type de donn?es en sortie Alpha (h,m,s.decimals), Delta ( ,',".decimals) Alpha (h.decimals), Delta (deg.decimals) Alpha, Delta, dA/dt, dD/dt, R topo, V radial Diff. X, Y (sec.d'arc) Diff. S(sec.d'arc), Angle de position (degr s) Diff. ...

... 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). ...