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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. ...
[ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/Education/wlopolar.html -- 12.4 Кб -- 24.03.2006
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2. Polar Orbiting Satellites
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. A low altitude polar orbit is widely used for monitoring the Earth because each day, as the Earth rotates below it, the entire surface is covered. ... A different choice was made for MAGSAT, orbited 1979-80 to survey the Earth's own magnetic field near its surface. ...
[ Сохраненная копия ]  Ссылки http://www.iki.rssi.ru/magbase/REFMAN/EAMAGSPH/wlopolar.html -- 6.4 Кб -- 21.12.2007
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3. GHRS Instrument Handbook
... HST . ... Missions . ... Data . ... Hubble Heritage Project . Future Missions and . ... HST Overview . Overview . ... Cycle 24 Announcement . ... Retrieving HST Data . ... Figure 6.1: - The Hubble Space Telescope and its components. ... Figure 6.2: - The focal plane of HST and the definitions of the V2, V3, U2, and U3 axes in the coordinate system of the spacecraft. Figure 6.3: - Locations of GHRS apertures relative to spacecraft axes. ... Figure 6.4: - Optical Schematic of the GHRS. ...
[ Сохраненная копия ]  Ссылки http://www.stsci.edu/hst/ghrs/documents/handbooks/ihb/GHRS_33.html -- 15.2 Кб -- 11.04.2016
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4. APOD: May 4, 1999 - Magnetic Mars
... May 4, 1999 . Magnetic Mars . Credit: Jack Connerney, Mario Acuna, Carol Ladd, MGS , NASA . Explanation: Mapping Mars from orbit, instruments on the Mars Global Surveyor (MGS) spacecraft have recently revealed banded magnetic field patterns - a startling and unanticipated suggestion that the Red Planet was more Earth-like in its distant past. ... As the crustal plates spread apart along the mid-ocean ridges , they carry a progressive banded record of Earth's changing magnetic field. ...
[ Сохраненная копия ]  Ссылки http://www.sai.msu.su/apod/ap990504.html -- 4.8 Кб -- 02.10.2012
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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 . ...
[ Сохраненная копия ]  Ссылки http://www.mrao.cam.ac.uk/yerac/shuygina/shuygina.html -- 13.7 Кб -- 08.12.2003
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6. 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 . ...
[ Сохраненная копия ]  Ссылки http://www.astronet.ru/db/xware/apod.html?page=9&d=2000-04 -- 15.0 Кб -- 12.04.2016
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7. TUI:Telescope:Offset window
This widget allows you to offset the telescope. ... Offset type : one of "Object Arc", "Object Arc XY" or "Boresight". ... This is motion on the sky or instrument, so don't worry about cos(dec). ... If you want to move that point (e.g. center your object along a different bit of the slit), then use a boresight offset. ... Note that a +X object xy offset will move the sky in the -X direction on the focal plane, because you are centering something in the +X direction on the boresight. ...
[ Сохраненная копия ]  Ссылки http://www.apo.nmsu.edu/35m_operations/TUI/Telescope/OffsetWin.html -- 4.2 Кб -- 05.09.2014
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8. http://xmm.vilspa.esa.es/docs/documents/CAL-SRN-0235-1-0.ps.gz
... 7 Comments None 3 0.1 1 10 normalized counts/sec/keV Black (qe16) Red (qe17) 1ES0102 REV 0065 MOS2 1 0.2 0.5 -100 -50 0 sign(d-m)*C channel energy (keV) Figure 3: As previous figure, but for MOS2 4 0 10 20 30 40 0.5­2.0 0.6 0.8 1.0 1.2 1.4 statistical basis: 117 observations relative flux in different bands [Joined fit = 1] pn MOS1 MOS2 RGS1 RGS2 xmmsas_20060628_1801­7.0.0_ccf_pub 0 10 20 30 2.0­10.0 0.6 0.8 ...
[ Текст ]  Ссылки http://xmm.vilspa.esa.es/docs/documents/CAL-SRN-0235-1-0.ps.gz -- 120.3 Кб -- 04.09.2007
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9. 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 > . ...
[ Сохраненная копия ]  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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10. Meade Instruments Corp. - Meade Customer Support
... Home About Meade Product Information Dealer Locator Customer Support Investor Relations Dealer Support Employment Opportunities Site Map . Meade Instruments Corp. ... Meade Autostar Supplementary Software Downloads . ... To upgrade your Autostar first click on the link below to download the Autostar Update (ASU) Client Application for Windows. ... The most recent versions of AutoStar Update automatically check for the newest versions of the AutoStar Updater and download it if necessary. ...
[ Сохраненная копия ]  Ссылки http://www.meade.com/support/auto.html -- 29.3 Кб -- 14.01.2016
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11. Armagh Observatory
... One of the instruments, the Troughton equatorial telescope, is maintained at constant temperature and relative humidity, to reduce the rate of deterioration. ... 3.1 Troughton Equatorial Telescope . Figure 1 shows the equatorial telescope constructed by J E Troughton of London and which was erected in the west dome of Armagh Observatory in 1795. ... Troughton, J. E.: c.1790, Instructions for Adjusting the Troughton Equatorial Telescope, Armagh Observatory Archives , M17.2, 3pp. ...
[ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/sci-instr.html -- 12.3 Кб -- 27.06.2011
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12. ESO - I derived quantities related to the performance of an instrument. How do
... Data Handling and Products > Data Reduction FAQ > I derived quantities related to the performance of an instrument. How do I know whether these numbers are "normal&quo