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1. http://www.naic.edu/~phil/430yagi/yagi/yagi.html
... Near, far field and the sky ovverlap at 100 km . Relative strengths of linefeed/yagi sidelobe detections . ... 18 Amin . ... Diameter=(K*lambda)/hpbw (where k depends on the edge taper .. typically k=1.2) The hpbws are different for the linefeed and yagi so their illumination patterns are different. ... At this height, the linefeed is still in the near field while the yagi is in the far field. The angles and distances of the two beams at 100 km are shown below (assuming the far field.. ...
[ Сохраненная копия ]  Ссылки http://www.naic.edu/~phil/430yagi/yagi/yagi.html -- 7.2 Кб -- 09.04.2006
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2. 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. ...
[ Сохраненная копия ]  Ссылки http://www.apo.nmsu.edu/Telescopes/SDSS/eng.papers/20011206_M1AirFlowTests/20011206.html -- 5.2 Кб -- 07.12.2001
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Еще в разделе: (Показать все результаты (>1109) - www.apo.nmsu.edu/ )

3. 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 . ...
[ Сохраненная копия ]  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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4. 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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5. http://www.mso.anu.edu.au/~bessell/FTP/Workshop/applic/readme_Aperplates
... Q 12.649 0.523 0.342 -0.108 4444 -4.647 -4.582 "n6231_ 178" 16 53 48.63 -41 51 54.1 J2000.0 ! ... A few lines are then added to the top (see readme_asc2dxf for details) to produce input for asc2dxf :in.coo: n6231cp6.dxf slot line 2.00 43.00 9.00 43.00 point 9.773 19.026 n6231 _ 171 Q 12.649 11.236 57.382 n6231 _ 178 I 14.533 ... the output of this program is as follows :n6231cp6.dxf: 0 SECTION 2 ENTITIES 0 CIRCLE 8 1 62 3 10 43.00 20 43.00 30 0.000 40 43.00 0 ...
[ Сохраненная копия ]  Ссылки http://www.mso.anu.edu.au/~bessell/FTP/Workshop/applic/readme_Aperplates -- 3.0 Кб -- 14.02.2001
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6. http://www.stsci.edu/hst/stis/documents/isrs/199510.pdf
... The first measured the repeatability of the slit wheel when it was rotated in the clockwise direction. ... 2 Table 1: BIA Images Image Name Slit ID Slit Wheel Location (degrees) 197.9592 252.5192 9.4492 114.5193 197.9592 252.5192 9.4492 114.5193 197.9592 252.5192 9.4492 114.5193 197.9592 252.5192 9.4492 114.5192 197.9592 252.5192 9.4492 114.5192 197.9592 252.5192 9.4492 114.5192 197.9592 252.5192 9.4492 114.5192 ... 10 Figure 5: Each Slit. ...
[ Текст ]  Ссылки http://www.stsci.edu/hst/stis/documents/isrs/199510.pdf -- 85.7 Кб -- 07.12.2004
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7. 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 . ...
[ Сохраненная копия ]  Ссылки http://mavr.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 02.10.2012
[ Сохраненная копия ]  Ссылки http://www.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 01.10.2012
[ Сохраненная копия ]  Ссылки http://jet.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 01.10.2012
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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. 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.iki.rssi.ru/mirrors/stern/Education/wlopolar.html -- 12.4 Кб -- 21.12.2007
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10. ADS Abstract Service Results
Find Similar Abstracts . ... The velocity of clusters of galaxies relative to the microwave background. ... BACKGROUND RADIATION, GALACTIC CLUSTERS, MICROWAVE SCATTERING, VELOCITY MEASUREMENT, HIGH TEMPERATURE GASES, MICROWAVES, POLARIZED RADIATION, RADIAL VELOCITY, RADIO ASTRONOMY, THOMSON SCATTERING . ... Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...
[ Сохраненная копия ]  Ссылки http://xray.sai.msu.ru/~mystery/html/Z/biblio/75.10.html -- 6.5 Кб -- 29.05.1996
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11. Database of Optical Constants -- Level: welcome
The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...
[ Сохраненная копия ]  Ссылки http://www.astro.spbu.ru/JPDOC/ -- 10.8 Кб -- 19.11.2010
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12. Order Definition
... The first of the equations defines the position of the spectral orders, m , in the raw image, while the second equation gives, for each order, the dispersion relation in one dimension. ... where the coefficients are computed using least squares techniques on a grid , i.e. sample number and line number of points located within the spectral orders of the image. These points in the grid are found automatically by an order--following algorithm, normally using the FLAT or STD image. ...
[ Сохраненная копия ]  Ссылки http://www.sao.ru/precise/Midas_doc/doc/95NOV/vol2/node151.html -- 8.3 Кб -- 23.02.1996
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13. ET-4R The set of extension tubes
. home . product . gallery . contact .
[ Сохраненная копия ]  Ссылки http://www.astrosib.ru/ac_et-4r.html -- 3.0 Кб -- 15.05.2015
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14. ASP: A Taste of Real Astronomy ? The ESA/ESO Astronomy Exercises
The ESA/ESO Astronomy Exercise Series 2 . The Distance to Messier 100 as Determined by Cepheid Variable Stars . ... The small variations in distance to the individual Cepheid variable stars in the Cloud are negligible compared with the much larger distance to the SMC. ... In this way Cepheid variable stars can be used as one of the 'standard candles' in the Universe that act either as distance indicators themselves or can be used to calibrate (or set the zero point for) other distance indicators. ...
[ Сохраненная копия ]  Ссылки http://www.astrosociety.org/edu/publications/tnl/57/realastro3.html -- 14.8 Кб -- 02.10.2012
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15. 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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16. http://www.atnf.csiro.au/whats_on/workshops/synthesis2001/material/imanal.pdf
... Can do almost everything that Miriad, AIPS and Difmap can plus more. ... Component Fluxes cont. ... Model fit to VSOP and ground- only VLBI data in Difmap ) Tasks, commands Miriad task Visibility plane model fitting Image plane model fitting Image plane integrated flux Uvfit, uvmodel Difmap command Modelfit AIPS task Uvfit, (slime) Aips ++ function image .fitsky, imagefitter (spatial), image .maxfit, image .fitprofile, imageprofiler image .statistics image .getchunk, ...
[ Текст ]  Ссылки http://www.atnf.csiro.au/whats_on/workshops/synthesis2001/material/imanal.pdf -- 1025.5 Кб -- 15.01.2002
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17. http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BCF2F060C-66FE-42C3-BA37-1503A6778FB4%7D
. This 3-D image clearly shows the spherical shape of Mars. (To see the 3-D effect, use a pair of left-eye red, right-eye blue color glasses.) Although Rosetta's direction relative to Mars was relatively constant during the approach, the surface view changed due to rotation. This made possible the production of an anaglyph, or stereoscopic image, by combining images taken by OSIRIS at different times. ESA
[ Сохраненная копия ]  Ссылки http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BCF2F060C-66FE-42C3-BA37-1503A6778FB4%7D -- 3.6 Кб -- 10.04.2016
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18. APOD: 2005 December 19 - Thin Rings Around Polarized Saturn
... 2005 December 19 . Thin Rings Around Polarized Saturn . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: How thin are the rings of Saturn? ... This thinness sometimes appears in dramatic fashion during an image taken nearly along the ring plane. The robot Cassini spacecraft now orbiting Saturn has now captured another shot that dramatically highlights the ring's thinness. ... If alone in space, the unlit part of Saturn would be much darker. ... About APOD | ...
[ Сохраненная копия ]  Ссылки http://www.sai.msu.su/apod/ap051219.html -- 5.2 Кб -- 02.10.2012
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19. http://www.eso.org/~bleibund/papers/RingbergII.ps
Measuring\Omega and \Lambda with Type Ia Supernovae J.C. Niemeyer Max­Planck­Institut fЁur Astrophysik Karl­Schwarzschild­Strasse 1, D­85748 Garching, Germany B. Leibundgut European Southern Observatory Karl­Schwarzschild­Strasse 2, D­85748 Garching, Germany The explosive carbon incineration of white dwarfs produces very luminous events with no hydrogen in their spectra ­ Type Ia supernovae (SNe Ia). ... Their determination of\Omega and \Lambda is based on the analysis of 7 supernovae at redshifts z ? ...
[ Текст ]  Ссылки http://www.eso.org/~bleibund/papers/RingbergII.ps -- 30.5 Кб -- 07.01.2001
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20. Relative pathnames
. You can define a file or directory by its location in relation to your current directory . The pathname is given as / (slash) separated list of the directories on the route to the file (or directory) from your current directory. A .. (dot dot) is used to represent the directory immediately above the current directory. In all shells except the Bourne shell, the ~ (tilde) character can be used as shorthand for the full pathname to your home directory. Examples . Did You Know? .
[ Сохраненная копия ]  Ссылки http://comet.sai.msu.ru/UNIXhelp/concepts/pathfile2.html -- 2.3 Кб -- 17.01.1997
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