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1. Technicality RATAN-600
. Diameter of circular antenna . 576 m . Number of antenna elements . 895 . Size of an element . 11.4 x 2 m . Geometrical area . 15000 m 2 . Effective area of full circle . 3500 m 2 . Wavelength range . 1 - 50 cm . Frequency range . 610 - 30000 MHz . Maximum angular resolution . 2 arcsec . Accuracy of coordinate determination . 1-10 arcsec . Flux density limit . 0.500 mJy . Absolute brightness temperature limit . 0.050 mK . Tracking time (South sector + Flat mirror) . 1-3 h . [RATAN-600 Homepage]
[ Сохраненная копия ]  Ссылки http://www.sao.ru/ratan/technic/desc.html.en -- 2.7 Кб -- 01.10.2012
[ Сохраненная копия ]  Ссылки http://mavr.sao.ru/ratan/technic/desc.html.en -- 2.7 Кб -- 02.10.2012
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2. Cosmological Gene project
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 . ...
[ Сохраненная копия ]  Ссылки http://mavr.sao.ru/hq/CG/anten.htm -- 13.4 Кб -- 24.02.2010
[ Сохраненная копия ]  Ссылки http://www.sao.ru/hq/CG/anten.htm -- 13.4 Кб -- 24.02.2010
[ Сохраненная копия ]  Ссылки http://jet.sao.ru/hq/CG/anten.htm -- 13.4 Кб -- 24.02.2010
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3. http://www.stsci.edu/hst/acs/documents/isrs/isr0001.pdf
Instrument Science Report ACS 00-01 PREDICTED SENSITIVITY AND DISPERSION OF THE PRISMS AND GRISM R. C. Bohlin, G. Hartig, and F. R. Boffi 2000 May ABSTRACT The three prisms and the grism in ACS are characterized in terms of the dispersion relations and sensitivity, so that a user can predict count rates and S/N of sources with known flux. ... The wavelength coverage in first order is from 5500 to 11,000е. Outside this Copyright© 1999 The Association of Universities for Research in Astronomy, Inc. ...
[ Текст ]  Ссылки http://www.stsci.edu/hst/acs/documents/isrs/isr0001.pdf -- 165.9 Кб -- 08.01.2007
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4. http://www.sao.ru/drabek/CCDP/TAPER/HTM_resume/PRINSTON/sec3.pdf
Linear Array Spectrometric Detectors RY-512 · RY-1024 · PDA-512 · PDA-1024 · High performance single diode array Quantum Efficiency, % 100 90 PDA detectors for spectroscopic systems · Full 25 mm coverage on 1024 element array Large well capacity Low cost 80 70 60 50 40 30 20 10 0 200 300 400 500 600 700 800 900 1000 1100 · · Wavelength, nm Linear Arrays Reticon diode array models RL-512SAQ or RL-1024SAQ with 512 and 1024 ...
[ Текст ]  Ссылки http://www.sao.ru/drabek/CCDP/TAPER/HTM_resume/PRINSTON/sec3.pdf -- 25.3 Кб -- 24.09.1998
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5. The best images from RTT150
RTT150 . ... One of the image, obtained in the May, 2003, with Andor DW436 CCD. Cluster 1541+6626, filter R, exposure 15 minutes, the resolution is 1", limiting star magnitude is 23m, the field of view is 8' x 8'. At the left: image of cluster 0720+7132 (z=0.268) obtained in the beginning of November, 2002 with RTT-150 and AP-47P CCD. 25 minutes exposure in R. The resolution is 0.7" (angular size of the image element - 0.23"), limiting stellar magnitude is 23.5-24. ...
[ Сохраненная копия ]  Ссылки http://hea.iki.rssi.ru/AZT22/ENG/best.htm -- 5.4 Кб -- 18.02.2004
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6. http://observ.pereplet.ru/images/GRB081102/grb_film.html
... GCN 8471 | ... TITLE: GCN CIRCULAR NUMBER: 8516 SUBJECT: GRB 081102: MASTER refind and final results DATE: 08/11/11 15:50:10 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina, D.Kuvshinov, P.Balanutsa Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.Parkhomenko Kislovodsk Solar Station of the Pulkovo Observatory V.Krushinski, I.Zalognikh Ural State GCN Circ 8470, Lipunov et al., ...
[ Сохраненная копия ]  Ссылки http://observ.pereplet.ru/images/GRB081102/grb_film.html -- 8.2 Кб -- 01.10.2012
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7. Observational Techniques: Units and Coordinates Notes
The aim of this section of the course is to familiarise you with celestial Coordinates. ... I found some good notes explaining the celestial coordinate system on the web: . ... 1st Dec: 04hr, 00min In addition to the equatorial coordinates described in the notes above, astronomers also use (at least) two other coordinate systes: galactic coordinates and ecliptic coordinates. ... Ecliptic coordinates use the ecliptic (the Earth's path around the sun) as the equator, and are used for solar system work. ...
[ Сохраненная копия ]  Ссылки http://www.mso.anu.edu.au/pfrancis/ObsTech/unicoord.html -- 3.5 Кб -- 01.10.2012
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8. IBIS: Technical Description
The following papers summarize the characterization and technical performance of IBIS : . ... Characterization of Fabry-Perot interferometers and multi-etalon transmission profiles. ... Righini, A., Cavallini, F., Reardon, K. P., 2010, Astronomy and Astrophysics , 515 , A85, . ... The filter wheel is located between the two interferometers. ... The interferometers can be rapidly tuned, simultaneously, so to allow sequential scanning of the spectral lines of interest (see movie in IBIS Intro ). ...
[ Сохраненная копия ]  Ссылки http://www.arcetri.astro.it/science/solar/IBIS/IBIS_description.html -- 33.6 Кб -- 13.12.2015
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9. Low Surface Brightness Galaxy Gallery
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. ...
[ Сохраненная копия ]  Ссылки http://zebu.uoregon.edu/sb2.html -- 4.8 Кб -- 26.05.2000
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10. At the Limit of Diffraction
... At the Limit of Diffraction . ... Credit Copyright: Yuri Beletsky ( Las Campanas Observatory , Carnegie Institution ) Explanation: Did you ever want to just look through the eyepiece of a large telescope in space ? If you could, you would see a sharp view that was diffraction limited . ... Still, in this working earth-based snapshot a new active adaptive optics system (MagAO) is being used to cancel out the atmospheric blurring in a visual observation of famous double star system Alpha Centauri . ...
[ Сохраненная копия ]  Ссылки http://www.astronet.ru/db/xware/msg/1336731 -- 14.7 Кб -- 07.05.2015
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