... Archives . ... Differential Emission Measure [Eqn] . ... Astro 301, class 1, and it took all of 20 minutes of talk about stellar magnitudes to put that notion to permanent rest. ... Now, it turns out that the human eye perceives brightness on a log scale, so magnitudes are numerically similar to log (brightness). ... frac{5}{2}\log_{10}\left(\frac{f_{object}}{f_{standard}}\right) \,,$$ . ... frac{5}{2}\log_{10}\left(\frac{L_{object}}{4 \pi d^2}\frac{1}{f_{standard}}\right) \,.$ ... Chandra Blog . ...

Еще в разделе: (Показать все результаты (>1707) - hea-www.harvard.edu/ )

• About Tom's Asteroid Flybys Service
• zhtools
• Doug Burke's PDL page

Appendix C Radiative Transfer for a Two-Level System This appendix details how to derive the total column density of a linear rigid-rotor molecule, such as CO, from the observed brightness of its rotational transition. ... C.2 Radiative Transfer for a Two-Level System I now consider emission in a two-level system from an upper J + 1 (denoted `u') to lower J (denoted `l') state. ... Spontaneous emission is controlled by the A coefficient, with a rate Aul nu . ... Tex exp(-31. ...

Еще в разделе: (Показать все результаты (>4256) - www.mrao.cam.ac.uk/ )

• DUST: dustiface.h File Reference
• G7.0-0.1
• Bojan Nikolic -- Memo on inference of phase correction coefficients

... Satellite data ] . SMIS ] . The program is designed to process the specific AVHRR instrument data for calculation and analysis of temperature fields on the sea surface and upper level of clouds. It performs brightness correction for visible channels with regards to clouds altitude. ... The program features a wide variety of classification algorithms (including two-dimensional histogram analysis) and enables to construct personal procedures for classification. ... Back to SMIS Home Page . ...

Еще в разделе: (Показать все результаты (>19) - smis.iki.rssi.ru/ )

• XV-IMAGE

T wo new moons of Uranus , provisionally known as Uranus XVI (S/1997 U 1) and Uranus XVII (S/1997 U 2), have been discovered. ... Caliban (S/1997 U 1) orbits about 7.2 million km from Uranus and is about 60 km in diameter. ... D iscovered by Brett Gladman , Phil Nicholson, Joseph Burns, and JJ Kavelaars using the 200 inch Hale telescope ; the first images were taken 1997 Sept 6 and 7. ... Discovery of two new moons of Uranus , from Brett Gladman . ... Cornell Science News: Uranian moons . ...

Еще в разделе: (Показать все результаты (>576) - www.iki.rssi.ru/ )

• First X-Rays From a Comet Discovered
• Comet Introduction
• Solar System Extrema

... Package . Class . ... PREV PACKAGE NEXT PACKAGE . FRAMES NO FRAMES All Classes . Class Summary . ... Displays the ImageJ Channels window. ... Implements the Image/Color/Color Picker command. ... This plugin implements the Brightness/Contrast, Window/level and Color Balance commands, all in the Image/Adjust sub-menu. ... ImageJ plugin that does curve fitting using the modified CurveFitter class. ... Implements ImageJ's Paste Control window. ... This is ImageJ's macro recorder. ...

Еще в разделе: (Показать все результаты (>275) - www.astro.louisville.edu/ )

• AstroCC - A Coordinate Converter for Astronomy

... Stellar disks of our LSB galaxies are thinner than HSB (high surface brightness) ones. ... The value LSB galaxies. b) The ratio of dark to luminous mass Mh /(Mb + M d) is plotted against the disk central surface brightness µ0 with the same notation as in Fig. 3a. There is no systematic difference in the relative dark matter mass between the LSB and HSB galaxies. c) The ratio of the spherical to disk mass Ms /Md is shown in dependence on the disk central surface brightness. ...

Еще в разделе: (Показать все результаты (>783) - jet.sao.ru/ )

• Cosmological Gene project
• The ROSAT Bright Survey: II. Catalogue of all high-galactic latitude RASS
• shmidt_e

According to observations by NASA's Chandra X-ray Observatory and ground-based optical telescopes, the supernova SN 2006gy is the brightest and most energetic stellar explosion ever recorded and may be a long-sought new type of explosion. The bottom left panel is an infrared image, using adaptive optics at the Lick Observatory, of NGC 1260, the galaxy containing SN 2006gy. ... X ray: NASA/CXC/UC Berkeley/N.Smith et al.; Infrared: Lick/UC Berkeley/J.Bloom & C.Hansen ...

Еще в разделе: (Показать все результаты (>2914) - www.astronomy.com/ )

• Bright planets meet at dusk | Astronomy.com
• Understanding brightness | Astronomy.com
• Bright new supernova blows up in the Cigar Galaxy (M82) | Astronomy.com

... Bad Astronomy . ... Bad Astronomy: The North Star, Polaris, is a very bright star. Good Astronomy: Polaris is a middling-bright star, easily missed. ... He said it was close to Polaris, the North Star, but he also said it was in the East. ... It's natural, I suppose, to think that such an important star should be bright, but really, that's a conceit, like thinking that the Earth is at the center of the Universe. If more people knew just why Polaris is the North Star, this Bad Idea would stop. ...

Еще в разделе: (Показать все результаты (>224) - www.badastronomy.com/ )

• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Mad Science
• Phil Plait's Bad Astronomy: Bad TV

... Развивающая игрушка Лягушка Bright Starts привлечет ребенка красочным видом, подарит новые ощущения и вскоре станет любимой игрушкой, приятной и веселой. ... Цвет: розовый . ... Цвет: Коричневый . ... Цвет: натуральный . ... Кружка имеет силиконовую крышку оранжевого цвета с прорезью для питья. ... Цвет: синий . ...

Еще в разделе: (Показать все результаты (>561) - astrokuban.info/ )

• Кресло-качалка Утенок (Bright Starts 6978) - Bright Starts - Bright Starts
• Развивающая игрушка-прорезыватель Божья коровка на цветочке (Bright Starts
• Игровой развивающий центр Зоопарк 360 - Bright Starts - Bright Starts

New reduction of minor planets photographic plates obtained with Pulkovo Normal Astrograph A.A. Berezhnoy Pulkovo Observatory of RAS, Saint-Petersburg, Russia Minor Planet observations at Pulkovo Periodical observations of 14 bright asteroids named Selected Minor Planets (SMP) were performed at Pulkovo since 1948 within the international framework started by works of B.V. Numerov and D. Brouwer. ... 108 133 113 74 124 67 97 88 14 84 64 5 20 19 Epochs (YYYY.MM) 1200 Mean values of total obs. ...

Еще в разделе: (Показать все результаты (>34) - www.puldb.ru/ )

• Pulkovo Databases

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

Еще в разделе: (Показать все результаты (>1279) - www.adass.org/ )

• The AXAF Ground Aspect Determination System Pipeline
• Refining the Guide Star Catalog: Plate Evaluations
• See Spike Run... Run, Spike, Run

... Amorphous carbonaceous materials can show a great diversity of optical properties due to the variability in their microstructure. ... The differently pyrolized celluloses are representative for a suit of carbonaceous material ranging from strongly disordered (insulating) to graphitized (conducting) material. Figure: Complex refractive index of hydrogenated amorphous carbon prepared by pyrolysis (annealing) of cellulose at different temperatures. ...

Еще в разделе: (Показать все результаты (>274) - www.astro.spbu.ru/ )

• A Nature of Polar-Ring Candidate Galaxy ZGC 2315+03

... About meteorites . ... Meteorite Encyclopedia . ... About laboratory . ... On the night of September 24-25, in the north of Irkutsk Oblast, local residents saw a brightly glowing space object draw a line across the sky and fall into the taiga. ... But scientists learned of the heavenly visitor only on October 3, when a fax arrived at the Institute of Sun And Earth Physics from Bodaibo. ... The first thing we did was to interview residents of villages located along the meteor's flight path. ...

Еще в разделе: (Показать все результаты (>26) - www.meteorites.ru/ )

... Main page News People . ASA . Master . Master net Homepage . ... MASTER . ... About Space Monitoring Laboratory, scientific directions, instruments, contacts . ... Latest news and news archive . ... 08.11.2011 . ... All news ...

Еще в разделе: (Показать все результаты (>49) - master.sai.msu.ru/ )

AO Home AO Astronomy Robert Minchin Blog Publications IDL Routines . Rotang can either be run from the command line as described here or through the alfa_ang GUI . ... To run rotang at Arecibo: . Start IDL . ... Run Rotang: . rotang, Date , RA , Dec , Time , /choice . ... Rotang also calculates the Azimuth and Zenith Angle fir every source. If the Zenith Angle is greater than 20 degrees, then the program will return that the source is down and will not calculate an optimum ALFA angle. ...

Еще в разделе: (Показать все результаты (>2236) - www.naic.edu/ )

• The Pleiades
• Why can I only see six of the ``Seven Sisters''?
• Brightest Pleiads Table

... Астрософт (Модератор: tlgleonid ) > . UCAC2 Bright Star Supplement для Cartes du Ciel . ... Астрософт . ... Cartes du Ciel - Sky Charts . ... 08 Август 2008, 14:04:19 ? Также готов каталог I/294 The UCAC2 Bright Star Supplement (Urban+, 2004), являющийся северным дополнением к каталогу I/289 The UCAC2 Catalogue(Zacharias+ 2003). ... Ответ #1 : 08 Август 2008, 14:41:20 ? ... Самая слабая звезда в каталоге UCAC2 Bright Star Supplement - это 2UCA 50406212 Vmag: 15.19 в Малой Медведице. ...

Еще в разделе: (Показать все результаты (>34) - www.astroclub.kiev.ua/ )

• Measuring the Brightness of the Sky RL1 - стр. 5 - Hand Made
• Measuring the Brightness of the Sky RL1 - стр. 1 - Hand Made
• Measuring the Brightness of the Sky RL1 - стр. 4 - Hand Made

National Research Institute for Physical-Technical and Radio Engineering Measurements IMPROVEMENT OF THE SOFTWARE BERNESE FOR CALCULATION OF THE EARTH ROTATION PARAMETERS ACCORDING TO THE DATA OF SATELLITE LASER RANGING (LAGEOS 1, LAGEOS 2) IN THE MAIN METROLOGICAL CENTRE OF THE STATE TIME AND FREQUENCY SERVICE Tsyba E. N., Kaufman M. B. 141570, Mendeleevo, Moscow region, Russia tel. +7-903-194-7575; tsyba_e_n@mail.ru ABSTRACT Preparatory ...

Еще в разделе: (Показать все результаты (>260) - www.gao.spb.ru/ )

• http://www.gao.spb.ru/database/csa/description_e.html
• http://www.gao.spb.ru/database/csa/corona/cor_fmt_e.txt
• http://www.gao.spb.ru/database/csa/eruptions_e.html

Subject, Problems and Objects of Theoretical Astrophysics. ... Stellar Photospheres, Their Features. ... Physics of Continuous Radiation Absorption in Stellar Photospheres. ... Continuous Radiation Absorption in Stellar Photospheres of Various Spectral Classes. Solar Type Photospheres. ... Characterisics of Absorption Lines. ... Interstellar Absorption Lines, Their Features. ... Physical and Dynamic Features of Interstellar Medium, Which Follows from Observations of Interstellar Absorption Lines. ...

Еще в разделе: (Показать все результаты (>66) - space.univ.kiev.ua/ )

• Observatory Lisnyky

... A star was observed at different zenith distances during one night at the Engelgardt's Astronomical Observatory in the program of atmospheric extinction study at blue. ... The determination of the star's brightness was performed with the method of photon counting. ... Variable star. ... The brightness of the variable star was measured occasionally during the other nights, and moments of maximal values of brightness (15.59m) were received on nights 2­5, the 2nd table. ... JD 2452805. ...

Еще в разделе: (Показать все результаты (>793) - www.issp.ac.ru/ )

• Comet Ephemerides
• IV International Astronomy Olympiad, Problems to solve
• The International Olympiad of Euro-Asian Astronomical Society

To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) METEOR OBSERVATIONS WITH MINI-MEGATORTORA WIDE-FIELD MONITORING SYSTEM S. Karpov, 1, 3 N. Orekhova2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Ivanov,2 E. Katkova,2 A. Perkov, and V. Sasyuk3 RESUMEN 2 Favor de prop orcionar un resumen en espanol. ... The faintest detected meteors has the peak brightness about 10 mag, while the ma jority - from 4 to 8 mag. ... 2010; Karpov et al. 2013; Beskin et al. ...

Еще в разделе: (Показать все результаты (>308) - vo.astronet.ru/ )

• astro-ph