... 2003 August 18 . Bright Lights, Dark City . ... A large power outage in northeast North America , however, dimmed most city lights and brought unfamiliar celestial wonders to many who looked up. ... Prominent in the above four-image digital montage are two of the few celestial wonders that can be seen even above the usual glare of city light pollution : the Moon and Mars . ... Tomorrow's picture: Mars Approaches . ... About APOD | ... NASA Web Site Statements, Warnings, and Disclaimers . ...

Еще в разделе: (Показать все результаты (>5693) - www.sai.msu.su/ )

• APOD: August 24, 1996 - Why is QSO 1229+204 so Bright?
• SN 1989B Light Curve Analysis.
• APOD: 2004 August 25 - Zodiacal Light and the False Dawn

... Usually, the reflection of city lights off of local air impurities makes it hard for casual observers to see more than a handful of stars from a bright urban area . ... Prominent in the above four-image digital montage are two of the few celestial wonders that can be seen even above the usual glare of city light pollution : the Moon and Mars . ... Scrolling right will show how eerily dark New York City appeared from across the Hudson River in New Jersey at about 10 pm on 2003 August 14. ... August ....

Еще в разделе: (Показать все результаты (>117212) - www.astronet.ru/ )

• Астронет > Bright Lights, Dark City
• Why is QSO 1229+204 so Bright?
• Астронет > Why is QSO 1229+204 so Bright?

... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

Еще в разделе: (Показать все результаты (>18552) - www.eso.org/ )

• ArtistтАЩs impression of bright exozodiacal light
• The Brightness of the Night Sky
• EoN_sky

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 (>267) - zebu.uoregon.edu/ )

• Galaxy Gallery Page II
• The Galaxy Gallery Page 6: Comparative Morphology

... 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 (>10180) - www.stsci.edu/ )

• Observing Faint Targets Near Bright Objects
• The Hubble Deep Field - version 2 scattered light subtraction
• The Hubble Deep Field - scattered light subtraction

Villains and Heroes of Lights and Lighting Fixtures . If we are to reduce the effects of light pollution, we must learn about the types, both good and bad, of fixtures used in outdoor lighting. ... In fact, this type of fixture is often chosen for this very reason. ... Although these lamps are not very energy efficient, and they are often found in older, inefficient fixtures that enhance light pollution, they still exist in great abundance in most locations and are still sold by the millions. ...

Еще в разделе: (Показать все результаты (>909) - www.astrosociety.org/ )

• ASP: Good Astronomy Activities on the WWW
• ASP: Black Holes to Blackboards: Seeing the Light
• ASP: Bright-Lights, Big-City, Overcast Survival Guide

The mosaic camera was mounted today in preparation for first light. The Gunn/Carr/Rockosi/Lupton team from PU were supported by French Leger/UW, Angie Prosapio and Steve Bastian from FNL, Mark Klaene and Jon Davis from APO, Alan Uomoto/JHU, and Larry Fiscelli/UC. ... Everyone monitors the progress of the mosaic camera as it is lifted in the saddle to the underside of the mirror cell. ... The camera is up in place. ... The camera mounted on the telescope and in position for first light. ...

Еще в разделе: (Показать все результаты (>475) - www.apo.nmsu.edu/ )

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 (>573) - www.astronomy.net/ )

... Bad Astronomy . Misconceptions . ... Bad Astronomy : "We're light years more advanced than our competition!" ... Even the closest astronomical object, the Moon, is 400,000 kilometers away! ... A beam of light will travel 9,500,000,000,000 kilometers in one year. This distance is defined as a light year ; the distance light travels in a year. ... This is another example of Bad Astronomy; like a light year, a parsec is a unit of distance, not time (to be specific, it equals 3.26 light years) . ...

Еще в разделе: (Показать все результаты (>351) - www.badastronomy.com/ )

• Phil Plait's Bad Astronomy: Mad Science
• Phil Plait's Bad Astronomy: Bad News
• Phil Plait's Bad Astronomy: Q and BA

Do not go gentle into that good night, Old age should burn and rave at close of day; Rage, rage against the dying of the light. ... Good men, the last wave by, crying how bright Their frail deeds might have danced in a green bay, Rage, rage against the dying of the light. ... Grave men, near death, who see with blinding sight Blind eyes could blaze like meteors and be gay, Rage, rage against the dying of the light. ... Rage, rage against the dying of the light. ...

Еще в разделе: (Показать все результаты (>1669) - www.naic.edu/ )

• Why can I only see six of the ``Seven Sisters''?
• The Pleiades
• What is HISA?

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Aurora . ... Corona . Fireballs . ... Zodiacal Light . ... The first thing to do is get acquainted with what the night sky looks like. ... The National Schools Observatory web site has very good horizon views of the sky for the current night. ... If the object is moving slowly across the sky then it may be one of the larger satellites. ... Cloudbait Observatory - October 2002 . ... October 2003 Aurora at Armagh . ...

Еще в разделе: (Показать все результаты (>2334) - star.arm.ac.uk/ )

• Light Pollution at Armagh Observatory
• Abstract
• Armagh Observatory

... The ancient chronical said about the colour rings around the Sun and the Moon, about three suns in the sky, light columns, bright lightning, different "comets" rushing to the Earth, moving among the stars or round the Earth with the sky. All these occurrences may be divided into three categories: one that occur in the near or far space, processes going on in the Earth atmosphere under the influence of cosmic factors and at last the occurrences connected with the Earth atmosphere. ... Rainbow . ...

Еще в разделе: (Показать все результаты (>52) - www.space.vsi.ru/ )

• luchisphotoe
• tumanor3photoe
• galophotoe

... The bright supernova (hereafter SN) in the galaxy NGC 4527 was first sighted by S. Knight (USA) on April 13.17UT at magnitude ~14.0v. The report of the sighting was subsequently forwarded by phone to the AAVSO. ... SN 1991T. The galaxy NGC 4527 is an Sb(s)II type galaxy with an apparent Blue magnitude of 11.32 (Shapley-Ames, 1981). ... An analysis of this event utilizing visual observations by amateurs, plus a light curve is presented.. ... THE LIGHT CURVE: . ... ISN SN 1991T web page . ...

Еще в разделе: (Показать все результаты (>950) - www.rochesterastronomy.org/ )

• Supernova 2002fk in NGC 1309
• Supernova 2003lc in UGC 934
• Nova M33 2001

Next: UBV light curves (Duerbeck Up: Optical light curves Previous: UBV light curves (Lyutyi, . UBV system; U,B,V photometry of A0620-00 #Ref: AJ 81, 104 ( 1976 ) S. van den Bergh # V, B-V, U-B наблюдения в системе UBV на фотоумножителе #errors: не приведены # - taking into account fast fluctuations of brightness and color with # amplitude ~ 0.1 mag, at least during half an hour (Lyutyi, 1976 ) = # errors sre set to be ...

Еще в разделе: (Показать все результаты (>291) - xray.sai.msu.ru/ )

• UBV light curves (Duerbeck and Walter, 1976)
• B light curve (Lloyd et al., 1977)
• UBV light curves (Lyutyi, 1976)

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 (>26) - site2010.sai.msu.ru/ )

• http://site2010.sai.msu.ru/static/doc/VOrlov_site2010.pdf

... A wonderful site where the debate about the nature of light sits. ... Shadow and Light science activities - A short list of activities for students about light and shadow designed by an undergraduate Education major in New Foundland. ... Projecting Shadows - Fantastic interactive site about how to make shadows from the Light/Block/Shadow technique. ... The Energy Story: Solar Energy - Aimed towards children, this is a short introduction about solar energy. ... You Light Up My Life | ...

Еще в разделе: (Показать все результаты (>1822) - hea-www.harvard.edu/ )

• An example of a typical timing analysis
• dictionary
• ISDN References

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Comets and Asteroids . ... Space Flight . ... Monthly Sky Notes . ... Zodiacal Light: A ghostly column of light in the sky taken near the Very Large Telescope at Paranal (Image credit: ESO) . ... Over the next month, on some clear moonless evening, if you are lucky enough to be far from any light pollution, keep a watch on the western horizon just after sunset and you might just see this column of light in the night sky. ...

Еще в разделе: (Показать все результаты (>2461) - www.armaghplanet.com/ )

• NGC4666: Secrets of a Starburst Galaxy | Astronotes
• Orion, mighty hunter of the winter sky | Astronotes
• What is light? - The electromagnetic spectrum made easy | Astronotes

... August 19, 1999 . Light From The Dark Sun . ... Explanation: Only in the fleeting darkness of a total solar eclipse is the light of the solar corona easily visible from Earth. ... In this series of images recorded from Siofok, Hungary during the total phase of the August 11 eclipse, progressively longer exposures (top left to bottom center) have been used to more faithfully capture different regions of the elusive solar corona. ... About APOD > . ...

Еще в разделе: (Показать все результаты (>7434) - www.arcetri.astro.it/ )

• APOD: June 28, 1998 - Comet Hale Bopp Over Val Parola Pass
• Hubble Finds A Bare Black Hole Pouring Out Light
• APOD: 2000 April 24 - Reflection Nebula M78

NIGHT RIDER'S LAMENT (G) C F / C G G7 / F G7 C / G G7 C F C F C / F G7 C / F G7 C F C F / G7 C Last night as I was riding Graveyard shift, midnight to dawn, Oh, the moon was as bright as a reading light For a letter from an old friend back home. ... You ain't gettin' nowhere and you're loosing your share - - Oh, you must have gone crazy out there." ... But they've never seen the Northern Lights. ... Never seen the spring hit the great divide - - No, they've never heard old camp cookie sing. ...

Еще в разделе: (Показать все результаты (>4558) - crydee.sai.msu.ru/ )

• http://crydee.sai.msu.ru/ftproot/pub/rec/music/lyrics/cs-uwp/m/misc/aside_of_the_road
• http://crydee.sai.msu.ru/ftproot/pub/rec/music/lyrics/cs-uwp/folk/s/stately_southerner
• http://crydee.sai.msu.ru/ftproot/pub/rec/music/lyrics/cs-uwp/folk/i/isle_of_may

The Doppler shift is the effect of sound increasing or decreasing in pitch as an object moves towards or away from you. ... Light works the same way, except light is shifted to redder colours when an object is moving away, and to blue colours when an object is travelling towards us. ... Almost every object he observed had its light stretched to redder colours, indicating essentially everything in the Universe was moving away from us. ... So the Hubble constant tells us how old the Universe is. ...

Еще в разделе: (Показать все результаты (>525) - www.mso.anu.edu.au/ )

• Pink Black Holes: Frequently Asked Questions
• The Zodiacal light seen above the eastern horizon nearly two hours before
• The Milky Way - and the lights of Coonabarabran - behind the dome of the ANU