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. ...

Еще в разделе: (Показать все результаты (>155) - zebu.uoregon.edu/ )

. Next: About this document ... Up: Part IV Extragalactic Astronomy Previous: Magnitudes . Sky brightnesses in magnitudes per square arcsecond. This data is from Siding Spring observatory - other observatories will be comparable or worse. U . B . V . R . I . J . H . K . Kn . Dark Sky . 22.8 . 22.5 . 21.5 . 20.8 . 19.3 . 6-day Moon ... 21.3 . 20.8 . 20.4 . 19.2 . Full Moon ... 18.8 . 18.5 . 18.9 . 18.2 . 15.0 . 13.7 . 12.5 . 13.7 . Paul Francis . 1999-03-09

Еще в разделе: (Показать все результаты (>408) - www.mso.anu.edu.au/ )

• Bright, sunny day
• C/2006 P1 (McNaught)

. Please standby and you will be automatically connected to the new location of the unframed Supernova page. Or, click on the link above. If you have questions or problems, please email me at David Bishop dbishop@vhdl.org . Last modified: Mon Aug 27 12:40:15 EDT 2001

Еще в разделе: (Показать все результаты (>903) - www.rochesterastronomy.org/ )

• Bright SN Menu
• Bright Supernova - Archives
• Bright Supernova pages - Statistics for 2016

... Surface Brightness of Background Light . Home . ... Data . ... WFPC2 Home . ... Instrument Home . WFPC2 History . ... LRF Data . ... Data Analysis Home . ... Instrument Handbook . Data Handbook . ... Input the surface brightness in magnitudes per square arcsecond. ... Galaxy U-B and B-V colors are drawn from Longo and deVaucouleurs 1983 for representative objects;V-R and R-I are estimated from WFPC2 Handbook Table 6.1. ... AB_xxxxx are AB magnitudes at the standard WFPC2 filter bands. ...

Еще в разделе: (Показать все результаты (>9477) - www.stsci.edu/ )

• Surface Brightness
• Observing Faint Targets Near Bright Objects
• Bright-Object Constraints

... 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. ...

Еще в разделе: (Показать все результаты (>220) - mavr.sao.ru/ )

Once students get the hang of it, they can find and measure the brightness of Delta Cephei in a few minutes. ... of Delta Cephei . ... Oct. ... The following table lists the measurements of Delta Cephei made by one amateur astronomer in autumn 1990. ... 4.0 . ... This activity is a simplified version of one that appeared in Hands-On Astrophysics, a series of activities prepared by the American Association of Variable Star Observers with support from the National Science Foundation. << previous page | ...

Еще в разделе: (Показать все результаты (>357) - www.astrosociety.org/ )

• ASP: Accidental Astrophysics: The Devil's In the Magnitudes, Part II
• ASP: Monster Comet Promises Big Show
• ASP: SETI?s Prospects Are Bright

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

Еще в разделе: (Показать все результаты (>100) - www.astronomy.net/ )

• Brightest Northern Hemisphere Galaxy - an Astronomy Net Education Forum Message

Compilation of Surface Brightness . HyperLeda home | Documentation | Search by name | ... Search an object in the surface brightness catalogue . The surface brightness in magnitudes per square arcsec (mag arcsec -2 ) . ... Surface brightness at effective radius . ... Effective mean surface brightness within the effective radius (equivalent radius in which half the total flux is emitted). ... Quality Flag The quality flag has the following meaning: . ... regular measurement . ...

Еще в разделе: (Показать все результаты (>825) - www.sao.ru/ )

• The ROSAT All-Sky Survey Bright Source Catalogue
• The FIRST Bright QSO Survey
• RATAN-600 NCP bright radio sources

The night sky brightness, together with number of clear nights, seeing, transparency, photometric stability and humidity, are some of the most important parameters that qualify a site for front-line ground--based astronomy. ... Night sky at ESO-Paranal (Chile). ... Night sky brightness data . ... UBVRI night sky brightness at ESO-Paranal during sunspot maximum (A 2003, PDF) . ... The Dancing Sky: six years of night sky observations at Cerro Paranal (Starlight 2007 conference proceedings, PDF) . ...

Еще в разделе: (Показать все результаты (>8360) - www.eso.org/ )

• ESO - My data shows an extended, bright feature - what can this be?
• ESO - How can I run the pipeline when there are no bright objects in the
• ESO - Final Data Release of zCOSMOS-bright Redshift Survey

... Bright Venus . ... Explanation: Have you seen a bright evening star in the western sky lately? ... Blazing at -4.6 magnitude , Venus, after the Sun and Moon, is the third brightest celestial body in planet Earth's sky . ... NASA Web Site Statements, Warnings, and Disclaimers . ... Публикации с ключевыми словами: Moon - Venus - Mercury - evening sky - Венера - Луна - Меркурий - вечернее небо . Публикации со словами: Moon - Venus - Mercury - evening sky - Венера - Луна - Меркурий - вечернее небо . ...

Еще в разделе: (Показать все результаты (>93505) - www.astronet.ru/ )

• Bright Venus
• APM 08279+5255: The Brightest Object Yet Known
• Journal "Peremennye Zvezdy"

... 2001 March 8 . Bright Venus . ... That's no star, that's planet Venus the second "rock" from the Sun . Blazing at -4.6 magnitude , Venus, after the Sun and Moon, is the third brightest celestial body in planet Earth's sky . ... This causes Venus to look brighter as it looms large in its crescent phases than when it is smaller and nearly full. Taken on January 28th, this dramatic picture finds a crescent Venus near its brightest to the right of a crescent Moon. ... About APOD | ...

Еще в разделе: (Показать все результаты (>3572) - www.sai.msu.su/ )

• Bright Sn in NGC 3877
• APOD: August 18, 1998 - APM 08279+5255: The Brightest Object Yet Known
• APOD: 2001 August 27 - Artificial Night Sky Brightness

... Outline of the BTF paper by Erwin de Blok (25-2-2002) ----------------------------------------------------- * Description of sample * Data and corrections * Descriptions of method to measure line widths * Description of method to measure inclinations * Corrections to linewidths and magnitudes (inclination, random motion, instrumental resolution, extinction) * Corrections to recession velocities (to Local Group frame, also POTENT etc for nearby galaxies) * Describe B-band ...

Еще в разделе: (Показать все результаты (>3053) - www.atnf.csiro.au/ )

• The HIPASS Bright Galaxy Survey
• Brightness Units
• A Search for Bright Kuiper Belt Objects

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... A bright nova has recently been discovered in the constellation of Delphinus (The Dolphin). ... The nova was confirmed late on August 14 at a magnitude of 6.3 (in a dark sky the faintest naked-eye stars are approximately 6.0 magnitudes - the lower the magnitude the brighter a star). ... Nova explosions occur in binary systems composed of a star similar to our Sun but only ~1/10 of its mass, and a star called a white dwarf. ...

Еще в разделе: (Показать все результаты (>1479) - star.arm.ac.uk/ )

• Terry Mosely's Bulletins
• Coronal Bright Points: Another Oscillating Environment
• The International Space Station becomes the second brightest object in the

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Understanding brightness . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

Еще в разделе: (Показать все результаты (>2236) - www.astronomy.com/ )

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

Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...

Еще в разделе: (Показать все результаты (>12) - site2010.sai.msu.ru/ )

... 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 (>1330) - hea-www.harvard.edu/ )

• About Tom's Asteroid Flybys Service
• Target Finding
• Other Useful Functions

. Первая страница Назад Продолжить Последняя страница Обзор Графические объекты .

Еще в разделе: (Показать все результаты (>238) - xray.sai.msu.ru/ )

• UBV light curves (Duerbeck and Walter, 1976)

... 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 (>218) - astrokuban.info/ )

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

... 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 (>48) - master.sai.msu.ru/ )

... 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 (>21) - 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