In the PROJECT we are using the following peculiar . features of RATAN-600 . ... Brightness temperature sensitivity being equal to the antenna temperature sensitivity .. ... Receiver system .. ... Using aperture averaging effect. dual- beam and dual (multi-) frequency filtration, we demonstrated full filtration of the atmosphere noise down to the receiver noise at all scales of acoustics peaks ( Fig.1 , Fig 2 ). ... We select this frequency as the central one in our project. ... Antenna surface . ...

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The Cosmic Microwave Background Radiation Temperature Work in groups of 2-4. ... Due 1999 April 15 In this laboratory exercise, you will use the radio telescope on the roof of Science B to measure the intensity of the Cosmic Microwave Background Radiation (CMBR). ... The output of the telescope when pointing at the sky will then be 2 Tsys = Trec + Tsky : The temperature of the sky can in principle arise from two sources, radiation from the atmosphere and radiation from outer space (the CMBR). ...

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• ALFA Receiver Temperature Polynomial Fit
• Arecibo Observatory Receivers
• Decommissioned L-weide Receiver

... The Russian Federation State Program "Physics of Condenced Matter", the "Superconductivity" division , Project code "Generation-2" . ... The multielement josephson structures are known to allow implementation of the unique properties of the Josephson junctions as electromagnetic waves sources with high change rate of generation frequency, working in the millimeter and submillimeter wavelength diapasones. ... Even the optimal type of the junction electrodynamic interconnection isn't chosen. ...

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• Experiment "Rain"

ATNF Home . ... About ATNF overview . News | ... Australia Telescope Steering Committee . ... Parkes radio telescope . Australia Telescope Compact Array . ... developed for the ASKAP Mk II PAF, . ... While commissioning activities continue apace with the Boolardy Engineering Test Array (BETA) at the Murchison Radio-astronomy Observatory (MRO) in Western Australia, the ASKAP team is also busily preparing the site for ground aperture array tests of the second generation ASKAP receiver . ...

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• VLBI Wiki | Main / ParkesNotes
• lbaops:parkesnotes [ATNF VLBI Wiki]
• The Parkes 21cm Multibeam Receiver

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . ... SSRT - Receiving systems . The SSRT has two independent receiving systems for recording solar observational data, and several ancillary receivers for checking, setting up and adjusting the instrument. The base receiving systen is a multichannel filter receiver for a simultaneous recording in 180 channels with the 500 kHz band each, adjusted at steps of about 600 kHz. ... Channel's band . ...

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In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

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• Astronomy HyperText Book: Stellar Evolution

... Kepler is a mission designed to detect and characterize Earth-sized planets around solar-like stars. The sizes of the planets are determined from the decrease in light from a star that occurs during planetary transits, and the orbital period is determined from the repeatability of the transits. ... These goals are accomplished by continuously and simultaneously monitoring a single field of 140,000 stars for evidence of brightness changes caused by transits of Earth-sized or larger planets. ...

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• The Previous vs. Current Generation: WF/PC-1 vs. WFPC2
• Results
• Comparisons of Implementations

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... Project History . ISS Russian Segment . Steps of ISS Assembly . ... ISS 45/46 . ... Rocket Space Complexes . ... To investigate the VHF radio signal transceiving conditions in the onboard radio beacon mode on RS-ISS with use of the global amateur radio communications. ... HISTORY . ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

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• INTERNATIONAL SPACE STATION

... Edward L. (Ned) Wright received his AB and PhD degrees from Harvard University, and was a Junior Fellow in the Society of Fellows. ... Prof. Wright is interested in infrared astronomy and cosmology. ... He has been working on the COsmic Background Explorer ( COBE ) since 1978. ... Wright, E. L. 2000, ApJ submitted, "DIRBE Minus 2MASS: Confirming the Cosmic Infrared Background at 2.2 Microns" . ... The COBE Diffuse Infrared Background Experiment Search for the Cosmic Infrared Background: II. ...

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• The Parkes 6 cm Galactic Survey
• H I 21 cm observations and data reduction
• Direct electron imaging-model

. Next: XAreaEf Up: XPSF Previous: Generation from Ground Calibration Contents . The multi-Gaussian fit is based on in-orbit observations of bright p[oint sources. In particular, it accounts for the triangular shape of the FM2 telescope. The King function parameters have been calculated from fits to the radial profiles of bright point sources observed in-orbit. Michael Smith 2011-09-20

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• Generation from Ground Calibration Data
• Future developments
• Errors

... Luminosity (L) · · · · A source's luminosity is the power that it emits in radiation. ... NB Astronomers often say `flux' when they mean `flux density' · SI units are Wm-2Hz -1 -26 filter · Also used are Jy 10 Wm-2Hz -1 E= РРРF d dA dt Specific Intensity, Surface Brightness (I) · Specific intensity (or surface brightness) is the power received (or emitted) per unit area per unit frequency per unit solid angle. ч F at surface of a spherical source = I · · Specific intensity is independent of distance...

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• http://www.mrao.cam.ac.uk/~anthony/latex/Khaikin.ps
• Astrophysics Group VSA
• Emily Curtis

... Director of the RAS ISR . RAS Academician . ... Astrophysics module Kvant of the orbital complex Mir launched in 1987 contains the largest on the station complex of the scientific equipment named the orbital observatory Roentgen. Observatory Roentgen consists of 4 X-ray telescopes, jointly exceeding the range of energies from 2 to 800 keV. ... Among the most significant results that were received in the observatory Roentgen are: . ... measurement of the periods of 9 X-ray pulsars; . ...

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... The antenna system . ... A military radar system, consisting of two identical radars, was transferred to the Institute of Solar-Terrestrial Physics (ISTP). ... The system features a two-channel transmit-receive antenna. ... By changing the phase difference in the channels, one is able to modify the shape of the total channels' beam in the angle-of-elevation plane. ... The total beam is controlled by introducing the phase signal into the excitation signal of one of the channels. ... Peak power.. ...

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• East Siberian Center for the Earth's Ionosphere Research. Incoherent Scatter
• East Siberian Center of Earth Ionosphere Research. IS radar Receivers Hall.
• East Siberian Center of Earth Ionosphere Research. Chirp ionosonde.

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

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• How do neutron stars generate steady magnetic fields? | Astronomy.com
• Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets,
• Understanding brightness | Astronomy.com

... It provides long range planning information to the scheduling team; it provides bright object, timing, and orientation information to the observation planning team; and it provides graphical description of the observations and their constraints. ... The GUI graphically displays the constraints that are computed by Spike and stored in the description files and in the database. ... BOAS processes all bright objects that have entered the database since the last time BOAS was run. ...

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• The New JCMT Holographic Surface Mapping System - Implementation
• StarView II: A Customizable Query Generation Tool
• Enhanced HST Pointing and Calibration Accuracy: Generating HST Jitter Files at

... Latest Supernovae . ... Sorted by Name For the years covered, 7501 supernovae and 114 extragalactic novae were reported. 376 of these supernovae were named by CBAT, 1714 were given possible supernova designations, and 5411 were not reported to CBAT. 219 supernovae were found in NGC/IC galaxies, 874 were found in named galaxies 341 objects were discovered by amateurs 4 were brighter than 13th Magnitude 208 were brighter than 16th Magnitude 1079 were brighter than 18th Magnitude 1349 ...

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• Bright Supernova pages - Statistics for 2003
• Bright Supernova pages - Statistics for 1998
• Bright Supernova pages - Statistics for 2002

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

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• Galaxy sector, archive 1994
• Solar system sector, archive 1998

by Jim Kloeppel, University of Illinois News Bureau . James B. Kaler, a professor emeritus of astronomy at the University of Illinois, has been awarded the American Astronomical Society 2008 Education Prize. ... One of Kaler?s books, "Extreme Stars: At the Edge of Creation," received the 2001 award for excellence in the category of physics and astronomy from the Association of American Publishers. ... He is the president of the board of directors of the Astronomical Society of the Pacific. ...

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• ASP: SETI?s Prospects Are Bright
• ASP: Star Science in the Autumn Sky
• ASP: Accidental Astrophysics: The Devil's In the Magnitudes, Part II

Astronomy Picture of the Day . Maria Mitchell Inspires a Generation . ... 10.10.1998 . ... October 1st was the 151st anniversary of the day Maria Mitchell swept the sky with her telescope and discovered the comet of 1847 (comet Mitchell 1847VI). Honored and recognized internationally for her discovery, Mitchell , who lived from 1818 to 1889, became one of the most famous American scientists of her day . ... October . ... October 1998 . ... NASA Web Site Statements, Warnings, and Disclaimers . ...

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• Астронет > Maria Mitchell Inspires a Generation
• Journal "Peremennye Zvezdy"

... Proposed location of the new generation Russian VLBI network radio telescopes Kaliningrad St. Petersburg Zelenchukskaya (Zc) Badary (Bd) Ussurijsk Working frequency bands for the new generation Russian VLBI network S X Ka 2.2 2.6 7.0 9.5 27 33 F, GHz Data acquisition parameters 4 frequency bands : 512 MHz bandwidth x 2 polarisations or 1024 MHz bandwidth x 1 polarisation 2-bit sampling ...

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• http://www.ipa.nw.ru/conference/wpltn2012/docs/27/1000%20kosmicheslii%20musor.pdf
• Keywords_31