... 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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Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The algorithm and appropriate program for decametric radiosignal propagation conditions prediction for paths from 500 to 9000 km have been developed at ISTP SB on the basis of normal wave method (AltyntsevaB.I,Iliyin N.V., Kurkin V.I. and others //Decameters channel simulation on the base of normal wave method . ... Solar activity indices are chosen automatically from the prediction date from the database . ...

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• East Siberian Center for the Earth's Ionosphere Research. VS data on-line

... Next: 7 kslice_3d: slicing data Up: Karma User Manual Previous: 5 Volume Rendering a . The <kpvslice> programme allows you to use a two-dimensional image to define a slice through a three-dimensional data cube. ... The slice is drawn on the total column density or velocity field map, and the corresponding position-velocity diagram will appear in the other window. ... To load the cube, press the Cubes button in the left window and select a cube file. ... The image is displayed in the left window. ...

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• Astrometry syllabus points
• The Two Point Angular Autocorrelation Function and the Origin of the Highest
• Mosaicing Observing Strategies

... HST . ... Data . ... HST Overview . ... Phase I Proposing . ... Retrieving HST Data . ... LINE or BOX . ... General information about designing ACS pointing patterns, and the "convenience" patterns available for Phase II proposers is provided in ACS dither and mosaic pointing patterns (Mutchler Cox, ACS Instrument Science Report 2001-07). ... Also, generic LINE, BOX, and SPIRAL pattern forms can be used to define pointing patterns which exceed the logical limits imposed on the "named" ACS patterns. ...

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• Obsolescent Acquisition Parameters
• Plots for Estimating Point Source SNR
• Appendix B: Point Source SNR Plots

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

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... RADEG)*bw/2. if not nyquist then begin dec _row_incr= dec _row_incr*2. ra_incr=ra_incr*2. endif decposns0= dec +(findgen(nr)+1-(nr+1)/2)* dec _row_incr decposns1=decposns0(0:nr-2)+ dec _row_incr/2. rapos=ra+(findgen(nc)+1)*ra_incr-ra_incr*(nc+1)/2. for z=0,nc-1 do begin if z/2. mod 1 eq 0 then for k=0,nr-1 do $ printf,outdat, circle w ,rapos(z),decposns0(k),bw/2. if z/2. mod 1 ne 0 then ...

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• http://www.naic.edu/~astro/IDLCODE/gridpoint.pro
• http://www.naic.edu/~palfa/doc/palfa.notes.050802
• http://www.naic.edu/~phil/notes/signalproc/hagenAcfSpc.pdf

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/triangulate.html
• http://xray.sai.msu.ru/~polar/xmgr/regions.html
• http://xray.sai.msu.ru/~polar/xmgr/view.html

... Previous: Calibration with the ISOPHOT Interactive Analysis (PIA) . ... This article is devoted to a description of the image processing capabilities of PIA, on the basis of the different mapping strategies with ISOPHOT. ... As input for mapping processing, PIA uses ISOPHOT data which has been reduced to the level of sky brightness (in MJy/sr) for each raster (and chopper) step and per detector pixel, together with the associated pointing information per raster point. ...

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• An Extragalactic Point Source Simulator for SIRTF Pipeline Testing
• Data Modeling and Analysis
• A New PROS Task for Calculating HRI Source Intensities or Upper Limits

Next: Auxiliary Data Up: Spectral Analysis Previous: Convolution and Deconvolution . Interactive continuum determination can be done with the command NORMALIZE/SPECTRUM as mentioned above. There are commands to measure the position of spectral features. ... Measurements of line strengths and equivalent widths can be obtained with the command INTEGRATE/LINE . ... The fitting package permits the determination of line parameters and additional modelling of the data. ...

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• Other Methods
• worldCoords(3)
• AGN, Condon, Condon, Hazard

... Output image 8 Algorithm Read parameters Read each input image Read corresponding exposure image (if required) Set output projection (reference coordinate, pixel size ) from the first input image Project corners of each input image into output frame to find the bounds of the output image Calculate size of output image in pixels from bounds and pixel ... Task should be capable of writing output image as any (sensible) data type, chosen by input parameter. ...

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• Description
• Extraction of a X-ray light curve for an EPIC point-like source (GUI version)
• How to extract MOS spectra of a point-like source and associated matrices

Next: Average Up: Quick Guide Previous: Reduce the background data Contents . ... Load all data if you have sufficient memory (this may take a few moments). ... Use R EDUCE P OINT D ATA I MAGING PLOT to plot and edit the point data data in much the same way as you did with the background data. ... Use plots vs channel if you have to flag several entire channels. Use the PLOT A UTO option to automatically edit outliers in PhotonRate and VisSq (select all channels for speed). ...

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• Load point data
• A visual tour
• NPOI Lab

Next: A box, to include Up: To produce a region Previous: To produce a region . select cursor and circle . When in the image window, the mouse now has a box shape with an arrow at the upper left corner. The mouse buttons act as follows: . LEFT - to move the center of the circle at the position of the arrow point. ... RIGHT - idle. center the circle at the point source by positioning the arrow point and clicking on the LEFT mouse button. A circle will appear at the arrow position. ...

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• Region Markers
• Access Point Names and Templates
• Phase Dispersion Minimization

By using the tools of sections (20) and (21), the mathematics of approximate solutions developed in (M-5), and assuming all orbits are circles, it is a relatively straightforward job to calculate the distance to the Lagrangian L1 point (or to L2). ... Let the gravitational constant be denoted by G , the mass of the Sun by M , that of Earth by m , the Earth's distance from the Sun by r and its velocity in its orbit by v . ... GMm / r 2 = mv 2 / r . and multiplying both sides by r / m . ...

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• Lagrangian Points
• Trigonometry beyond 90 degrees
• Frames of Reference: The Centrifugal force

... By using the tools of sections (20) and (21), the mathematics of approximate solutions developed in (M-5), and assuming all orbits are circles, it is a relatively straightforward job to calculate the distance to the Lagrangian L1 point (or to L2). ... Let the gravitational constant be denoted by G , the mass of the Sun by M , that of Earth by m , the Earth's distance from the Sun by r and its velocity in its orbit by v . ... GMm / r 2 = mv 2 / r . and multiplying both sides by r / m . ...

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• Lagrangian Points
• More on Kepler's Second Law
• How Distant is the Moon?--lesson plan #14

... These values are functions of the geographical (geodesic) latitude and the height of the point above the sea level. ... The option also permits to solve the reverse problem — to calculate approximate values of observatory latitude and its height above the sea level depending on the introduced values of dxy and dz. ... It should be mentioned that low precision of dxy and dz for some observatories in the list maintained by MPC leads to negative value of height above the sea level for some of them. ...

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Chair of solid state physics . ... The most important concepts of the modern crystallography, crystal symmetry and methods of crystal structure determination are considered. ... The main experimental aims of X-ray diffraction study of classic crystal structure and real structure are analyzed. ... Crystal lattice. ... The main diffraction schemes in representation of a reciprocal lattice: Laue method, powder diffraction method, oscillation method, X-ray diffraction on powder sample and single crystal. ...

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• XIV International Astronomy Olympiad - main points for formation of the teams

SINGULAR POINTS IN THE SOLAR CHROMOSPHERE . ... In the structure of the solar chromosphere, containing information on the configuration of the magnetic field, we have found and identified all the main types of the singular points ( see Fig. 1 ), which are known as inherent features of the 2-D vector field. ... The main types of the singular points are the node, the focus, the center, and the saddle. ... Singular point of the focus type in the solar chromosphere. ...

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... Instant "Brushed Aluminum" Textures . ... This does not solve any grandiose problem, it's an interesting extremely quick method to create textures and backgrounds with a `brushed aluminum' look. ... 2) Use the marquee tool and select a rectangle on the far left side, full height, about 15-20 pixels wide . ... 5) Go to Image > Effects > Scale, which adds little handles to the still selected marquee rectangle . ... 1) After filling the source rectangle with noise, use the Blur More filter then proceed...

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• APOD: 2007 November 26 - Moon Over Pigeon Point Lighthouse
• SAI SN RESEARCH GROUP
• APOD: 2011 November 27 - Shuttle Plume Shadow Points to the Moon

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

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• VISTA - Visible and Infrared Survey Telescope for Astronomy

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Click for more . ... Binary Star KL Dra . ... Pleasant March: slightly drier, milder and sunnier than average . 2016 April 7th . Cool, damp February with average sunshine; wettest winter for 139 years . 2016 March 16th . Discovering the stars at Armagh: Free St Patrick s day events hosted by Armagh Observatory . 2016 March 15th . ... Mild, wet January, slightly duller than average . ... 2016 January 15th . ...

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• Coronal Bright Points: Another Oscillating Environment
• Bright Point Studies
• Observations and Data Reduction