... Moving the sample locations to achieve the desired warping will result in an irregularly sampled image plane. These irregularly spaced samples will then be brought back to regularly spaced positions, hence warping the image. ... The sampled impulse response, , is a function of the sample positions, . ... Allowing the sum to go outside the image boundaries ( or ) includes some ``anchor'' samples outside the image, which tends to stabilize the solution trajectory when is minimized. ...

Next: Catalog Construction Up: Observations and Analysis Previous: Source Detections . ... It was assumed that the highest signal gives the most likely position of the source. ... Comparing the summed map with the maps from the individual energy ranges, the one which produced the smallest error box was chosen to represent the source position, as long as was greater than 4, a level chosen to reflect a reasonable degree of confidence in the detection. ...

... The routine returns the offset (deltaX, deltaY) from the linear grid position for a specified detector location. ... the distortion (deltaX, deltaY) at the detector location (rawX, rawY) is derived from the distortion map stored in the extension FILTER-FilterId (e.g. FILTER-U, FILTER-V, FILTER-GRISM1 etc.) ... interpolate the extracted distortion points (RAWX_OFF ,RAWY_OFF ) and calculate the distortion (deltaX,deltaY) at the requested postion (rawX, rawY) . ... deltaX, deltaY . ...

... 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 offsets (in focal plane and sky) are shown for various configurations (.ps) ( .pdf ): . Each plot shows the location of the 19 dipoles in various positions. ... On 29jun10 i switched to use the measured center locations on the sky.. but: . ... Page 1,2 have the dipoles as they are mounted on the positioner with no rotation. ... Page 3: Dipoles at center (focal plane) . ... Page 5: Dipoles at center and positions A1-A6 (focal plane) . Page 6: Dipoles at center and positions A1-A6 (on sky) . ...

Astronomy Picture of the Day . ... 22.11.2004 . ... Credit: NASA Explanation: Where do gamma ray bursts occur? To help find out, NASA launched the Swift satellite on Saturday, as pictured above . ... Subsequently collected GRB and afterglow information will help astronomers not only determine the nature of the initial explosions, but also the nature of the expanding shockwaves. ... Publications with keywords: Swift - launch . Publications with words: Swift - launch . ... Dawn Launch Mosaic . ...

Next: Library, Archive and Historic Up: Buildings, Grounds, Library and Previous: Disposal of the Schmidt . Mark Bailey, Apostolos Christou and David Asher have developed ideas for a new outdoor exhibit in the Observatory grounds, called `The Human Orrery'. ... The position of the proposed new Library, Archive and Historic Scientific Instruments building is shown in outline. ... Next: Library, Archive and Historic Up: Buildings, Grounds, Library and Previous: Disposal of the Schmidt M.E. Bailey . ...

... Tonight's Sky . ... Mars . ... Home . ... Observing . ... Mars orbiter repositioned to phone home Mars landing . ... Two other Mars orbiters, NASAт??s Mars Reconnaissance Orbiter and the European Space Agencyт??s Mars Express, also will be in position to receive radio transmissions from MSL during its descent. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

The following parameters as a function of the universal time are enclosed in this file. 1. no . ... Universal time date (YYYYMMDD) . ... Universal time (.hhmmss) . ... Geomagnetic local time in the satellite position . ... geomagnetic latitude . ... co-ordinate - . ... system . ... co-ordinate system . ... Solar-ecliptic co-ordinate - . ... Satellite velocity . ...

... 2004 November 22 . Swift Launches . Credit: NASA . ... To help find out, NASA launched the Swift satellite on Saturday, as pictured above . ... Once a gamma ray burst (GRB) is located, Swift itself will rotate to face it head-on and determine its distance directly. ... Subsequently collected GRB and afterglow information will help astronomers not only determine the nature of the initial explosions, but also the nature of the expanding shockwaves. ... About APOD | ... NASA Official: Jay Norris. ...

True Color Image Gallery: Galactic SNR | ... Common Name: SGR 1900+14 . ... Description: bright SGR located well outside shell of remnant . ... Exposure uf . ... Exposure uf Exposure time of unfiltered event file . Exposure f Exposure time of filtered event file . not clear if SGR and remnant are associated . ... Event 2 FITS File . ... Pileup model used to correct spectrum but index probably uncertain. see fit detail page for more about the fit. see chandra spectrum page for region used. ...

... Slit-plate Deflection . ... One end of the approximately 2m long fiber is inserted into a hole in an aluminum plug-plate, and the other end is fed into and supported by a slit-plate. ... Since the fibers are to be calibrated from a fixed position, it will be necessary to know how much the slit-plate deflects under its own weight due to gravity, as well as how much it deflects under the weight of the fibers and harnesses. The deflection of two plates of thickness 3.175 and 3.607mm was tested. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Moon . ... Space Flight . ... Science Fiction . UFOs and Fringe Science . Monthly Sky Notes . ... NASA's Cassini spacecraft obtained this image of Saturn's moon Helene on June 18, 2011. Image credit: NASA/JPL-Caltech/Space Science Institute) . ... Your email address will not be published. ... Email * . ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

Russian version of HP . ... StarCalc is the fastest professional astronomy planetarium & star mapping program for Windows 9x/ME/NT/2000/XP (StarCalc version for PocketPC computers you can found here ). ... Extensibility : This program is based on common "Plugin StarCalc interface to catalogs and object groups", which allows program to add new modules as Plugins. ... Welcome to the Pocket StarCalc Home Page: . ... Some bugfixes in eclipses" and line" plugins - see the new versions in downloads page. ...

This is a new popup window - close it when you are done . ... Apparent motion due to parallax . The two images in this animation were taken at exactly the same time (2010-Oct-08, 0600 UTC), one from the remotely controlled telescope in Cambridge, MA, and the other from the remotely controlled telescope in Arizona. You can see the difference in the comet's apparent position from the two locations due to parallax. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

blockmean - filter to block average (x,y,z) data by L2 norm blockmean [ xyz [ w ] file ( s ) ] -I x _ inc [ m|c ][/ y _ inc [ m|c ]] -R west / east / south / north [ r ] [ -H [ nrec ] ] [ -N ] [ -V ] [ -W [ io ] ] [ -: ] [ -bi [ s ][ n ] ] [ -bo [ s ] ] blockmean reads arbitrarily located (x,y,z) triples [or optionally weighted quadruples (x,y,z,w)] from standard input [or xyz [ w ] file ( s )] and writes to standard ... Default is (longitude,latitude)]. -bi Selects binary input. ...

Multichannel Flare Spectrograph . ... phi - the angle between the green vertical line passing through the solar disk image and the violet radius vector "r" of the object located at the center of the spectrograph slit- red cross. positive - clockwise, negative - counterclockwise . ... mx = x coordinate of the coelostat main mirror . ... x : carthesian solar coordinate alog axis parallel to solar equator (in arcsec) . y : carthesian solar coordinate alog axis parallel to solar axis (in arcsec) ...

image collection >> physical phenomena >> vortices . Image ers0205130118 . ... Cyclonic eddies on the front of the Soya Warm Current, La Perouse Strait. In the SAR image, the narrow bright band ~1 km wide is caused by current shift and starts near Kamen Opasnosti (Rock of Danger) where cold waters are located (see AVHRR image ). ... The third eddy also has the cold central area with SST equal to 5°C. The coldest waters (4°C) form a band to the southeast off the eddy's centre. ... Image . ...

... Bojan Nikolic web pages (r. 329) . ... The order in which libraries to link to are passed to the linker is important . ... Many libraries use the GNU Autoconf/Automake build toolchain. ... Run the ./configure script, which looks for the various programs and libraries that the package needs . ... The simplest way is to run ./configure and make note of any complaints about missing programs or libraries that it reports. ... Some notes on the GNU toolchain . ... Passing options to configure . ...