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http://www.iki.rssi.ru/magbase/REFMAN/EAMAGSPH/wlopolar.html.
http://www.iki.rssi.ru/magbase/REFMAN/EAMAGSPH/wlopolar.html.
1. Polar Orbiting Satellites
... Low Polar Orbit . ... Different types of satellite orbits have different uses: while the synchronous orbit is best for communication satellites, Lagrangian point orbits help monitor the solar wind before it reaches Earth. ... Many spacecraft use such orbits, e.g. the US Air Force surveillance satellites of the DMSP series, or the series of French Earth-resources spacecraft SPOT . ... If the satellite then starts near a noon-midnight orbit, it will always pass near noon and near midnight. ...
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Ссылки http://www.cosmos.ru/mirrors/stern/Education/wlopolar.html -- 12.4 Кб -- 24.03.2006
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2. Polar Orbiting Satellites
... Low Polar Orbit . ... Different types of satellite orbits have different uses: while the synchronous orbit is best for communication satellites, Lagrangian point orbits help monitor the solar wind before it reaches Earth. ... Many spacecraft use such orbits, e.g. the US Air Force surveillance satellites of the DMSP series, or the series of French Earth-resources spacecraft SPOT . ... If the satellite then starts near a noon-midnight orbit, it will always pass near noon and near midnight. ...
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Ссылки http://www.iki.rssi.ru/mirrors/stern/Education/wlopolar.html -- 12.4 Кб -- 21.12.2007
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3. APOD: 2011 May 6 - Farther Along
... 2011 May 6 . Farther Along . Credit: NASA , JPL-Caltech . ... Launched in 1977, Voyager 1 now holds that distinction at 17.5 billion kilometers from the Sun. ... This graphic shows the position of Voyager 1 relative to the outer solar system (top and side views) along with other distant spacecraft contenders. Next most distant, Pioneer 10 is about 15.4 billion kilometers from the Sun, though on the opposite side of the solar system from Voyager 1. ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap110506.html -- 5.4 Кб -- 03.02.2013
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4. XWare > APOD
... Eros Encounter Nears . ... After an unanticipated extra trip around the Sun, the NEAR spacecraft is now politely approaching asteroid 433, Eros, at a respectful relative speed of about 20 miles per hour. ... In the left corner, wearing a red nucleus surrounded by blue spiral arms, is M81. ... Rings Around Beta Pictoris . ... NEAR to Asteroid Eros . ... On December 23, 1998 the Near Earth Asteroid Rendezvous (NEAR) spacecraft flew by asteroid 433 Eros. ... Abell 2218: A Galaxy Cluster Lens . ...
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Ссылки http://www.astronet.ru/db/xware/apod.html?page=9&d=2000-04 -- 15.0 Кб -- 12.04.2016
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5. Determination of the relative orientation between radio and dynamical reference
... The experience of determination of the link between radio sources and dynamical reference frames is presented. To obtain this connection we used a series of very long baseline interferometry (VLBI) observations of the spacecraft Phobos-2 and angularly nearby quasars. ... The dynamical reference frame is determined by equator and equinox of these ephemerides. ... References . ... The relative orientation of the radio and dynamical reference frames can be described by a sequence of three rotations . ...
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Ссылки http://www.mrao.cam.ac.uk/yerac/shuygina/shuygina.html -- 13.7 Кб -- 08.12.2003
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6. Young SSAU scientists will guide the orbital constellation of the satellites
... SSAU History . ... The Ground Control Complex for Small Spacecraft of Samara State Aerospace University took control of the satellites Aist-1 . ... The data received from SSAU scientific equipment on board of the satellites Aist-1 was processed by the engineers of the Rocket and Space Centre and then was transferred to the university scientists. ... On April 19, 2013 the first small spacecraft Aist-1 was launched from the space-launch complex Baykonur together with a research satellite Bion-M No. ...
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Ссылки http://www.ssau.ru/engnews/11715/ -- 27.6 Кб -- 24.08.2015
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7. APOD: January 29, 1998 - The Earth-Moon System
... January 29, 1998 . The Earth-Moon System . Credit: NEAR Spacecraft Team , JHUAPL , NASA . Explanation: This evocative mosaic image of the Earth-Moon system was recorded by NASA's Near Earth Asteroid Rendezvous (NEAR) spacecraft earlier this month. ... During this recent flyby of the Earth-Moon system , the NEAR spacecraft used Earth's gravity to deflect it towards its ultimate destination, the Asteroid 433 Eros. It is scheduled to arrive at Eros in January 1999. ... About APOD > . ...
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Ссылки http://www.sai.msu.su/apod/ap980129.html -- 4.6 Кб -- 02.10.2012
[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/sistemasolare/Terra/earthmoon_near_big.html -- 4.5 Кб -- 12.12.2000
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[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/sistemasolare/Terra/earthmoon_near_big.html -- 4.5 Кб -- 12.12.2000
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8. http://xmm.vilspa.esa.es/external/xmm_links/trainee/alumni/a_martin.pdf
XMM-Newton Timing Monitoring Antonio Martin Carrillo Tutor: Marcus Kirsch July 24, 2006 Antonio Martin Carrillo 1 Overview XMM-Newton Pulsars Crab pulsar Relative time accuracy 2 epoch folding Conclusions Next steps Antonio Martin Carrillo 2 XMM-Newton · Launched in December 1999 · 3 independent CCD cameras called EPIC (European Photon Imaging Camera) · 2MOS and 1PN ...
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Ссылки http://xmm.vilspa.esa.es/external/xmm_links/trainee/alumni/a_martin.pdf -- 322.8 Кб -- 16.08.2006
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9. http://www.stsci.edu/documents/dhb/webvol2/c07_foserrors.fm1.html
... Table 32.2 summarizes the nominal initial accuracies for different kinds of acquisitions. ... FOS Target Acquisition Calibration Accuracies . ... ACQ . ... Blind Pointing . ... In summary, the pointing accuracy limitations of FOS target acquisition methods are: . ... ACQ/PEAK: . ... This was the value achieved by all FOS externally pointed calibration observations obtained after July 1, 1992 and was the ultimate limiting positional accuracy of FOS photocathode granularity and sensitivity calibration...
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Ссылки http://www.stsci.edu/documents/dhb/webvol2/c07_foserrors.fm1.html -- 9.1 Кб -- 10.02.1998
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10. Phil Plait's Bad Astronomy: Bitesize Astronomy
... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Site Info . ... It is from from Voyager 1 and shows a whopping big impact crater dominating the profile of the moon. Note that Mimas is about 400 kilometers across (about 250 miles). ... The wall around the crater is 5 kilometers high, and that central peak rises 6 kilometers above the surface (many impact craters have a large central peak which is caused by a pressure rebound from the impact). ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/bitesize/mimas.html -- 19.9 Кб -- 09.04.2016
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11. Doppler Shift
... Observers looking at an object that is moving away from them see light that has a longer wavelength than it had when it was emitted (a redshift), while observers looking at an approaching source see light that is shifted to shorter wavelength (a blueshift). ... By measuring the amount of the shift to the red, we can determine that the bright galaxy is moving away at 3,000 km/sec, which is 1 percent of the speed of light, because its lines are shifted in wavelength by 1 percent to the red. ... Part 2...
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Ссылки http://www.sao.ru/cats/~satr/cosmo/doppler.htm -- 3.7 Кб -- 17.10.2000
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12. Description of the RadioAstron project, english version
... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...
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Ссылки http://www.asc.rssi.ru/RadioAstron/description/observations_eng.htm -- 9.5 Кб -- 10.05.2008
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13. RELATED WORK
... Early on, our interest in chirping analysis functions was motivated by a different kind of chirping phenomenon: chirping due to perspective. ... Our interest in radar, however, drew us toward processes that are more accurately analyzed by linear-FM chirplets. ... We have also constructed other chirplet transforms, such as a three-parameter Doppler chirplet representation that models a source producing a sinusoidal wave, while moving along a straight line (e.g. a train whistle). ...
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Ссылки http://crydee.sai.msu.ru/~vab/Wavelet.rsc/Chirplet.dir/node3.html -- 6.0 Кб -- 15.04.1998
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14. Nomenclature
Next: A Universal Diagram for Up: ``Ecology'' of Magnetic Rotators Previous: The Corotation Radius . The interaction of a magnetic rotator with the surrounding plasma to a large extent depends on the relation between the four characteristic radii: the stopping radius, , the gravitational capture radius, , the light cylinder radius, , and the corotation radius, . ... Hence, the classification of the interaction regimes may well mean the classification of magnetic rotators. ...
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Ссылки http://xray.sai.msu.ru/~mystery/articles/review/node22.html -- 15.6 Кб -- 25.02.1997
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15. The AstroStat Slog Blog Archive different views
... Archives . ... If you do not mind the time predictor, it is hard to believe that this is a light curve, time dependent data. ... It?s hard to say this data set is designed for time series analysis apart from the complication in statistical inference due to measurement errors. How to design the statistical study with measurement errors, huge gaps in time, and unequal time intervals is complex and unexplored. ... The following is R output without measurement errors. ... Chandra Blog . ...
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Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/2009/filters-are-differen/index.html -- 23.8 Кб -- 01.03.2014
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16. ET-4R The set of extension tubes
. home . product . gallery . contact .
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Ссылки http://www.astrosib.ru/ac_et-4r.html -- 3.0 Кб -- 15.05.2015
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17. Armagh Observatory
... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . The Armagh Human Orrery is the first large-scale outdoor exhibit to show with precision on the ground the positions of the main planets, a dwarf planet and two comets. It is an innovative education and learning tool designed to explain the motion of the planets around the Sun and the changing position of Earth, relative to those planets, as it too revolves around the Sun. ... The Armagh Human Orrery . ...
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Ссылки http://star.arm.ac.uk/press/2013/human_orrery_2013oct19.html -- 8.2 Кб -- 25.10.2013
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18. impos
... User Guide ] Task: impos Purpose: Converts image coordinates between different systems. ... Key: in The input image or visibility dataset. ... Choose from: hms HH:MM:SS.S (e.g. for RA) dms DD:MM:SS.S (e.g. for DEC) arcsec Arcseconds relative to the reference pixel absdeg Absolute degrees reldeg Degrees relative to the reference pixel abspix Pixels relpix Pixels relative to the reference pixel absghz GHz relghz GHz relative to the reference ...
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Ссылки http://www.atnf.csiro.au/computing/software/miriad/doc/impos.html -- 4.7 Кб -- 10.04.2016
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19. M1 Airflow Lab Tests
... A three-cell test section roughly representative of the primary mirror was provided for this test by the Steward Mirror Lab. ... Additionally, the tests are intended to determine relative airflow vs. pressure drop characteristics for each of the air flow patterns so the results can be evaluated both as a function of flow rate and of pressure drop along the flow path. ... The bottom (top as installed) was cut out so it could close the chamber for heating and be removed for the cooling tests. ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/SDSS/eng.papers/20011206_M1AirFlowTests/20011206.html -- 5.2 Кб -- 07.12.2001
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20. http://www.gao.spb.ru/english/as/j2014/presentations/kudryashova.pdf
... St Petersburg 23, September 2014 1 Motivation · Origin of Martian moons? ... Considered error sources: Phobos a priori ephemerides; Phobos a priori GM value; measurements noise; different strategies; · Methods: real data analysis; simulations. ... St Petersburg 23, September 2014 8 Simulations: sensitivity of the measurements to the a priori GM value Simulations: zero noise+ IMCCE a priori ephemerides +GMPH = 7.16 * 105 m3/sec2. ... St Petersburg 23, September 2014 14 Thank you! ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/kudryashova.pdf -- 482.3 Кб -- 28.09.2014
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