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http://xmm.vilspa.esa.es/sas/8.0.0/doc/ommosaic/node10.html.
http://xmm.vilspa.esa.es/sas/8.0.0/doc/ommosaic/node10.html.
1. Algorithm
... Read parameters Read each input image If the input images contain a mixture of low and high resolution windows, convert the high-resolution windows to low resolution ones. ... 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 size Create output image Loop over input images Normalize each one by its exposure time....
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Ссылки http://xmm.vilspa.esa.es/sas/7.0.0/doc/ommosaic/node8.html -- 4.4 Кб -- 28.06.2006
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2. A New PROS Task for Calculating HRI Source Intensities or Upper Limits
... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/chenj.html -- 11.4 Кб -- 03.11.2000
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3. Jonathan's ASC/SDS documents
ASC-FITS-2.0.1: ASC FITS File Designers' Guide (Rots and McDowell) (1999 Jun) . ASC-FITS-REGION-1.0: FITS region document (McDowell and Rots) (1998 Mar) . ... CXC-DM-001 Introduction: Data Analysis with the Chandra Data Model (2001 Oct) . ... 1998 Feb 26: SDS-1.0: Data Product List: obsolete . ... 1998 Mar 09: SDS-10.0: (ASC-FITS-REGION-1.0) FITS region document: see ASC-FITS-REGION-1.0 . 1998 Feb 09: SDS-11.0: FITS function document (superseded by ASC-FITS-FUNCTION-1.2) . ...
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Ссылки http://hea-www.harvard.edu/~jcm/asc/docs/ -- 5.2 Кб -- 02.10.2012
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4. GPI Data Formats GPI Data Pipeline 1.0 documentation
... GPI Data Pipeline 1.0 documentation . GPI IFS Data Handbook . ... GPI Data Formats . Multi-Extension FITS format . ... Data quality flags extension ?DQ? ... This extension will contain a 8-bit integer flag for each pixel in the main image array. ... Bit 5 may be written by the data pipeline, which can also modify bit 0. bit 0: bad pixel, do not use if set. ... bit 5: [work in progress] flagged as bad pixel by data pipeline using time-dependent bad pixel map from calibration database. ...
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Ссылки http://www.stsci.edu/~mperrin/software/gpidata/ifs/dataformats.html -- 13.2 Кб -- 14.02.2014
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5. HyperLEDA Internal documentation
The FITS archive & data processing pipelines . ... The archived data are broad band images (BBI) and long-slit spectra (LSS) plus their associated template and calibration files. The data in HFA can enter into the HyperLeda processing pipeline and the results can be freely downloaded. ... Definition of the file system (structure of the archive) . ... The coordinate systems must be updated when the data (pixel data, other keywords, related tables) are altered (eg. rebinning of the image). ...
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Ссылки http://www.sao.ru/fetch/HL/11/development.html -- 13.8 Кб -- 23.12.2013
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6. Thesis Figures
... Values have been scaled arbitrarily. High ratios are shown in blue, corresponding to blue colors, and low ratios are shown in red, corresponding to red colors. ... Noise combined with background subtraction difficulties in the lower left quadrant of the WISP1 data (see Fig. \ref{Fig:wisp_snr_mskd}) make colors in this area very unreliable. ... The values shown here are typically a factor of ~3 less than those calculated for the Schmidt data, shown in Figure \ref{Fig:bj_alpha}. ...
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Ссылки http://www.naic.edu/~gibson/thesis/fig/fig_ch4.html -- 8.9 Кб -- 27.06.1999
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7. Smoothing Images
... Miriad offers tasks to convolve images by Gaussians ( convol and smooth ) and also to convolve images by other images ( convol ). ... beam . ... Task generally convol does its best to scale the output pixels so that the output image units are Jy/beam. If you are convolving an image which is already in Jy/beam by Gaussian, then convol needs the beam parameters ( bmaj, bmin, bpa ) to be in the dataset header to correctly determine the scale factor, and the output effective beam parameters. ...
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Ссылки http://www.atnf.csiro.au/computing/software/miriad/userguide/node158.html -- 10.3 Кб -- 10.04.2016
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8. SAO RAS home page
... Дни открытых дверей к юбилею САО РАН (12-14 апреля 2016 г.) . Международная конференция "Dark Ages and White Nights (Spectroscopy of the CMB)" (20-24 июня 2016 г.) . ... Международная конференция MULTI-SPIN GALAXIES - 2016 (26-30 сентября 2016 г.) . Международная астрономическая конференция "Физика звезд: от коллапса до коллапса" (3-7 октября 2016 г.) Архив . ... Подробнее.. ... 10.02.16 . ... БТА в реальном времени . ... Цейсс-1000 в реальном времени . ... Последнее обновление: 22/03/2016 ...
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Ссылки http://www.sao.ru/ -- 11.4 Кб -- 09.04.2016
[ Сохраненная копия ] Ссылки http://mavr.sao.ru/ -- 11.4 Кб -- 09.04.2016
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9. AY2008 (preface)
... In the тАЬAstronomical YearbookтАЭ (AY) the ephemerides of the Sun, Moon, major planets and stars computed with the maximum precision in accordance with the resolutions approved by the International Astronomical Union (IAU) are published. ... N.I. Glebova, M.L. Sveshnikov; . ... The seasons values, coefficients of the Tchebyshov polynomials of the Moon ephemerides, the phases of the Moon, the planetary configurations, the data for the eclipses of the Sun and Moon (N.I. Glebova, M.V. Lukashova) . ...
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Ссылки http://www.ipa.nw.ru/PAGE/EDITION/ENG/AE/2008/ae_11.htm -- 10.2 Кб -- 10.04.2016
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10. The pyramidal (multi-resolution) CCT
... The value of tile-size, NW , may be thought of as a sixth coordinate axis in the chirplet transform parameter space - TF-area. Including this sixth coordinate axis provides us with a hierarchical (multi-resolution) CCT. ... Various 2- D slices through the multiresolution CCT may correspond to useful tilings of the TF plane with true parallelograms (true to the extent that the DPSS define a truly rectangular region in the TF plane). ...
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Ссылки http://crydee.sai.msu.ru/~vab/Wavelet.rsc/Chirplet.dir/node16.html -- 4.2 Кб -- 15.04.1998
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11. High Resolution HST Images of Pluto and Charon (ESO Press Release 09/94)
... The remote planet Pluto and its moon Charon orbit the Sun at a mean distance of almost 6,000 million kilometres, or nearly fourty times farther out than the Earth. During a recent investigation by an international group of astronomers [1], the best picture ever of Pluto and Charon [2] was secured with the European Space Agency's Faint Object Camera at the Hubble Space Telescope (HST). ... The new HST image was taken when Charon was near its maximum elongation from Pluto (0.9 arcseconds). ...
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Ссылки http://www.eso.org/~ohainaut/nice/pluto.html -- 8.5 Кб -- 18.08.2004
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12. Getting Started in Actor Prolog. 3D Web Site.
The first persistent Web agent that we have created on Actor Prolog is a program that collects information about research groups that develop Prolog and projects in the field of logic programming. The agent looks through a given list of Web sites and calculates some attributes of the sites: the date of recent modification, total size, the number of figures, the number of outside links, the number of error links, the number of given keywords, etc. ... http://www.cplire.ru/Lab144/space/prolog.html . ...
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Ссылки http://www.cplire.ru/Lab144/start/e_3d.html -- 11.3 Кб -- 24.09.2007
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13. INTERBALL TAIL PROBE SITUATION ANALYSIS
Tail Probe is one of the satellites of the INTERBALL program. ... Collection of the orbital elements | ... Flight situation analysis during operations scheduling . ... Two stages of the orbital situation analysis are presented: . ... The satellites motion calculation during the flight situation analysis is based on the orbital elements, determined by the Ballistic center at KIAM RAN. The modified (by backward integration) orbital elements are usedduring the aposteriory situation analysis. ...
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Ссылки http://www.iki.rssi.ru/vprokhor/tail.htm -- 5.5 Кб -- 20.04.2000
[ Сохраненная копия ] Ссылки http://www.cosmos.ru/vprokhor/tail.htm -- 5.5 Кб -- 20.04.2000
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14. Space Telescope-European Coordinating Facility
... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...
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15. Journal "Peremennye Zvezdy"
Colorful Moon Mosaic . ... Credit Copyright: Noel Carboni Explanation: No single exposure can easily capture faint stars along with the subtle colors of the Moon. ... The fascinating color differences along the lunar surface are real, though highly exaggerated, corresponding to regions with different chemical compositions . And while these color differences are not visible to the eye even with a telescope, moon watchers can still see a dramatic lunar presentation tonight. ...
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Ссылки http://www.astronet.ru/db/varstars/msg/1216157 -- 7.4 Кб -- 07.09.2006
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16. Resolution - an Astronomy Net ATM Forum Message
ATM Forum Message . Forums: . ... Post . ... Resolution . Forum List | ... Post Message | ... Posted by Rick Crockett on April 25, 2007 08:46:54 UTC . ... resolution - aschilli - April 30, 2007 - 00:08 UTC . Indoor resolution - rick_crockett - June 2, 2007 - 07:04 UTC . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
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Ссылки http://www.astronomy.net/forums/atm/messages/3670.shtml -- 13.8 Кб -- 09.04.2016
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17. Laboratory of spectroscopy of defect structures ISSP RAS
... For SIMS (Secondary Ion Mass Spectrometry) analysis, a solid surface is bombarded by primary ions of some keV energy. ... The subsequent mass analysis of the emitted ions provides detailed information on the elemental and molecular composition of the surface. ... Extremely short ion pulses with a duration below . ... By rastering a fine-focussed ion beam over the surface, like an electron beam in an electron microprobe, mass resolved secondary ion images (chemical maps) can be obtained...
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Ссылки http://www.issp.ac.ru/lsds/en/methods/sims.html -- 10.6 Кб -- 10.04.2016
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18. Optical static Fourier spectrometer
Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...
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Ссылки http://space.univ.kiev.ua/~lapchuk/my_web/Spectrometer.htm -- 10.1 Кб -- 21.02.2000
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19. Armagh Observatory
... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Magnetic (red squares) and non-magnetic (black points) Herbig Ae/Be stars plotted in a Hertzsprung-Russell diagram. ... Using the projected rotational velocities measured at the surface of the stars, we have calculated the angular momentum of the sample and plotted it as a function of age. We have then compared the angular momentum and the v sin i distributions of the magnetic to the non-magnetic HAeBe stars. ...
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Ссылки http://star.arm.ac.uk/highlights/2012/624.html -- 6.7 Кб -- 20.11.2012
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20. Optimization of spectroscopic observations
... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...
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Ссылки http://mavr.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 02.10.2012
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