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1. Spectral-Line Observing
... We will consider the rms, (K), for observations with a receiver of system temperature, T , frequency resolution, per polarization, and total integration time per observing cycle, . ... For ``in-band'' frequency switching, the line under investigation is always in the observing band. ... Position Switching or ``Out-of-Band'' Frequency Switching: Here the line is only observed for one half of the time, with noise being present all of the time. ...
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Ссылки http://www.naic.edu/~astro/guide/node15.html -- 10.0 Кб -- 22.02.2012
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2. Effective temperatures
. Next: Diameters Up: Stellar parameters from calibrations Previous: Gravities Contents . Temperatures of stars are derived from their spectral type and luminosity class. Calibrations are stored in files spec_par.V, spec_par.IV, spec_par.III, spec_par.II, spec_par.I in oyster/starbase . teff_stars Compute effective temperature for all stars in startable. teff_star ( spectrum _char ) Function. Return effective temperature for star with specified spectrum. Christian Hummel 2015-04-28
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Ссылки http://www.eso.org/~chummel/oyster/manual/node116.html -- 3.5 Кб -- 28.04.2015
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3. Feed cabin No.6
Feed cabin Nr. 6 . ... The special feed cabin Nr. 6 is intended for observation of near-zenith sky region with using of whole RATAN-600 reflecting surface. Both highest possible collected area and the best angular resolution of radio telescope in this operating mode are realized. ... 3.75 GHz . ... Physical temperature . ... System noise temperature . ... Antenna noise temperature . ... The effective area of the whole RATAN-600 ring antenna . ... a reference horn . ... Feed Horn . ...
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Ссылки http://mavr.sao.ru/hq/lrk/complex/tip6/etip6.html -- 3.3 Кб -- 10.04.2016
[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/lrk/complex/tip6/etip6.html -- 3.3 Кб -- 10.04.2016
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/lrk/complex/tip6/etip6.html -- 3.3 Кб -- 09.04.2016
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[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/lrk/complex/tip6/etip6.html -- 3.3 Кб -- 10.04.2016
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/lrk/complex/tip6/etip6.html -- 3.3 Кб -- 09.04.2016
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4. http://xmm.vilspa.esa.es/calibration/documentation/epic_cal_meetings/201504/Gonzalez_Cal_2015.pdf
RGS EPIC-pn Cross Calibration Rosario GonzАlez-Riestra EPIC Calibration and Operations Meeting 9 -10 April 2015 ESAC R. GonzАlez-Riestra EPIC Calibration and Operations Meeting, 9-10 April 2015, ESAC RGS Calibration Status Wavelength scale accuracy 1st order: 6 mе nd order: 2 5 mе no systematic offset Line Spread Function FWHM/FWHM 10% Absolute effective area: 10 % Effective area Bad (hot/cool) pixels: less than 3% of detectors surface. ...
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Ссылки http://xmm.vilspa.esa.es/calibration/documentation/epic_cal_meetings/201504/Gonzalez_Cal_2015.pdf -- 183.5 Кб -- 10.04.2015
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5. ACS Data Handbook
... ACS Data Handbook > Chapter 4: ACS Data Processing Considerations > 4.6 ACS/WFC CCD Detector Charge Transfer Efficiency (CTE) . ... ACS/WFC CCD Detector Charge Transfer Efficiency (CTE) . ... 4.6.3 Improving CTE: Post-Observation Image Restoration . ... The ACS/WFC CCD detectors operate by the simple process of converting incoming photons into electron/hole pairs, collecting the electrons in each pixel, and then transferring those electrons across the detector array during the device readout. ...
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Ссылки http://www.stsci.edu/hst/acs/documents/handbooks/currentDHB/2013/acs_Ch47.html -- 16.1 Кб -- 12.04.2016
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6. http://www.atnf.csiro.au/projects/askap/techdocs/LOFAR_technology.pdf
LOFAR in Australia A Brief Engineering Perspective By Dr Peter J Hall, CSIRO SKA/LOFAR Program Leader 6 November, 2002 Background LOFAR (LOw Frequency ARray) is a proposed radio telescope designed to operate in the approximate frequency range 10 - 250 MHz. ... In both cases, the instruments would be built and operated by international consortia; Australia is a founding member of the 11-participant SKA consortium and may join the USA and Europe in the LOFAR endeavour. ...
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Ссылки http://www.atnf.csiro.au/projects/askap/techdocs/LOFAR_technology.pdf -- 14.5 Кб -- 23.01.2003
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7. Armagh Observatory
... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... A sketch for the active region model on ultracool dwarfs. ... An active region model was built, based on the rotation of the UCD and the ECMI mechanism. ... The active region model is applied to the radio emission from TVLM 513-46546, in which the ECMI mechanism is responsible for the radio bursts from the magnetic tubes and the rotation of the dwarf can modulate the integral of flux with respect to time. ...
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Ссылки http://star.arm.ac.uk/highlights/2010/567.html -- 6.8 Кб -- 08.09.2010
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8. ОТЧЕТ
... Radio astronomical tests of the engineering model of the space radio telescope (SRT) were completed in Pushchino - see Results . ... Monitoring of the development of the upgrade on-board 1.35-cm receiver (R-SRT-1.35 cm): . ... EM Engineering Model . ... OHCFS-SRT Space Radio Telescope On-board Heterodyne and Clock Frequency Synthesizer set . OHFS-SRT Space Radio Telescope On-board Hydrogen Frequency Standard . ORFS-SRT Space Radio Telescope On-board Rubidium Frequency Standard . ...
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Ссылки http://www.asc.rssi.ru/RadioAstron/archives/2004/month_notic/dec_mar.html -- 23.7 Кб -- 03.11.2011
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9. Distributed Software for Observations in the Near Infrared
... We have developed an integrated system that performs astronomical observations in Near Infrared bands operating two-dimensional instruments at the Italian National Infrared Facility's ARNICA and LONGSP . ... The user interface is organized as widget-based X11 client. ... 1993; Di Giacomo et al. 1993). ... Moreover, if the interprocess communication interface includes support for networking, the software immediately becomes network distributed software. ... DESQview/X User Guide 1993, Quarterdeck . ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/gavryusevv.html -- 9.9 Кб -- 03.11.2000
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10. http://www.sao.ru/cats/~satr/RFSymp/abs/17_Korzhavin.pdf
ESTIMATIONS OF EFFECTIVE HEIGHT, SIZE AND BRIGHTNESS TEMPERATURE OF SOLAR CYCLOTRON SOURCES A.N. Korzhavin, T.I. Kaltman Sp ecial Astrophysical Observatory of RAS, Saint-Petersburg, Russia arles@mail.ru The mo deling of microwave emission from a sp ot-asso ciated cyclotron source was done to refine the metho d of estimations of effective brightness temp erature, size and height ab ove photosphere in the pro cessing of RATAN-600 observations. ...
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Ссылки http://www.sao.ru/cats/~satr/RFSymp/abs/17_Korzhavin.pdf -- 16.8 Кб -- 09.10.2006
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11. Transferring mag to erg/cm/s
... Stellar magnitudes, provided by observations in an optical band, are reduced to the units of erg/cm /s as follows: . ... Table: `Zero-points', central wavelengths, and effective widths of optical bands (Zombeck's Handbook, 1990). - the corrected value (the handbook value is given in parentheses). ... We have achieved coincidence between theoretical values by Bochkarev et al (1991) and ours, obtained with rectangular shapes of transmission band of optical filters. ... 1991, V. 1, P. 41. ...
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Ссылки http://xray.sai.msu.ru/~galja/xnov/node21.html -- 7.8 Кб -- 14.01.2002
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12. Practical Astrophysics
Subject, Object and Problems of Astrophysics. Practical and Theoretical Astrophysics. ... Visual Telescope; Problems Which Are Solved with the Its Help. ... Resolution of Telescopes. ... Effectiveness of Telescope in Respect of Resolution. ... Optical Power of Telescopes for Star-like and Extensive Objects. Boundary Magnitude. Reasons of Light Dissipation in Telescopes. ... Spectral Instruments in Astrophysics. ... Basic Photometrical Ideas, Magnitudes and Their Measurement. ...
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Ссылки http://space.univ.kiev.ua/courses/pract_astroph_e.html -- 7.6 Кб -- 23.02.2005
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13. http://www.mrao.cam.ac.uk/~anthony/latex/Depetris.ps
Multifrequency Observations of SZ Effect toward clusters of galaxies M. De Petris et al. ... We describe a dedicated instrument (MITO) consisting of a 2.6m telescope operating at 3500 m a.s.l. in the 2.1, 1.4, 1.1 and 0.8 mm channels with ё 10% bandwidths. Forthcoming results to ward A1656 cluster are reported and discussed in terms of thermal and nonthermal components. ...
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Ссылки http://www.mrao.cam.ac.uk/~anthony/latex/Depetris.ps -- 39.3 Кб -- 27.02.2000
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14. Optical systems and devices
To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...
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Ссылки http://www.mao.kiev.ua/lao/optical_systems_eng.html -- 19.6 Кб -- 12.01.2010
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15. Polarization properties (transmitted radiation)
Next: Polarization efficiency: size/shape/orientation effects Up: Optical properties of cosmic Previous: The 2175? feature . To model the interstellar polarization one needs to calculate the forward-transmitted radiation for an ensemble of non-spherical aligned dust grains. ... Let non-polarized stellar radiation passes through a dusty cloud with a homogeneous magnetic field. ... The angle between the line of sight and the magnetic field is ( ). ... where the angle is connected with and ( ). ...
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Ссылки http://www.astro.spbu.ru/DOP/8-GLIB/ASTNOTES/node5.html -- 24.1 Кб -- 19.11.2010
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16. Six-Centimeter Radar Observations of 4179 Toutatis
... Old World First Asteroid Radar Echo. ... It testifies that 4179 Toutatis is a double object like asteroid 4769 Castalia. ... Interference of Radar Echo from the Binary Asteroid 4179 Toutatis. ... An analysis of the 6-cm radar data revealed quasi-harmonic oscillation of the echo’s “central” Doppler frequency with a period of about 14 sec and a deviation of about (0.7*B) Hz, where B is the echo bandwidth, which for 4179 Toutatis was equal to 2.1 Hz and 1.9 Hz for 1992 Dec 8 and 9, respectively. ...
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Ссылки http://www.cplire.ru/html/ra&sr/sr/4179-Toutatis/index.html -- 11.9 Кб -- 02.12.2002
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17. VSOP Symposium Proceedings
Individual papers from the VSOP Symposium Proceedings, "Astrophysical Phenomena Revealed by Space VLBI", eds H. Hirabayashi, P.G. Edwards and D.W. Murphy (ISAS), can be downloaded as gzipped postscript files by clicking on the links below. ... Multi-Epoch Global+VSOP/HALCA Observations of Virgo A at lambda 6 cm . ... Space-VLBI Observations of the Core-Jet in the Nearby Spiral Galaxy M81 . ... H. Hirabayashi, P.G. Edwards, B.G. Piner et al. ... Pentachromatic VSOP and VLBA Survey of GPS Sources . ...
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Ссылки http://www.vsop.isas.ac.jp/vsopsymp/papers/index.html -- 12.2 Кб -- 23.08.2000
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18. COSMIC RAY Observation
Cosmic Ray laboratory of . ... Neutron Monitor (Cosmic Ray Observations) . is situated in Irkutsk (Russia) . ... Height - location above sea level . ... Height: . ... For recording the CR (Cosmic Rays) neutron component at Irkutsk, . neutron monitor NM-64 is used, which is an installation with 18 two-meter proportional counters filled with BF 3 (boron trifluoride gas) in which the B 10 90 per cent of the total boron. ... The neutron monitor is located at 475m above sea level. ...
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Ссылки http://cgm.iszf.irk.ru/irkt/about.htm -- 3.9 Кб -- 10.01.2005
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19. http://vo.astronet.ru/~karpov/pdf/2015_Malaga_mmt_satellites.pdf
To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) MASSIVE PHOTOMETRY OF LOW-ALTITUDE ARTIFICIAL SATELLITES ON MINI-MEGATORTORA S. Karpov, 1, 3 E. Katkova,2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Davydov5 E. Ivanov,2 A. Perkov,2 V. Sasyuk3 RESUMEN Favor de prop orcionar un resumen en espanol. ... The nine-channel Mini-MegaTORTORA (MMT-9) optical widefield monitoring system with high temporal resolution system is in operation since June 2014. ...
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Ссылки http://vo.astronet.ru/~karpov/pdf/2015_Malaga_mmt_satellites.pdf -- 185.1 Кб -- 15.12.2015
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20. LHPP ISSP RAS
... High-pressures experiments are mostly aimed at studying phase transformations in solids, synthesising new phases and studying their composition, crystal and magnetic structure, physical and thermodynamical properties. ... The specific feature of investigations at LHPP that distinguishes it from most other high-pressure laboratories is combining in situ measurements with studies at ambient pressure of new high-pressure phases fixed by quenching to liquid nitrogen temperature. ...
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Ссылки http://www.issp.ac.ru/lhpp/indexen.html -- 9.7 Кб -- 03.04.2014
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Астронет | Научная сеть | ГАИШ МГУ | Поиск по МГУ | О проекте | Авторам
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