... This was shown in dramatic fashion by the COsmic Background Explorer (COBE) satellite which produced this premier view of the central region of our own Milky Way Galaxy in infrared light in1990. ... Comet Hale-Bopp is living up to its expectations. ... The Great Comet of 1997 is now brighter than the Great Comet of 1996 ever was. ... What happened to Jupiter's Great Red Spot? ... Both writer/editors of APOD are impressed by how bright Comet Hale-Bopp has become, and how easily visible it is. ...

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... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 February 6 . The Cosmic Infrared Background . Credit: A. Kashlinsky ( SSAI ) S. Odenwald ( Raytheon ), 2MASS , NSF , NASA . ... Visible is light emitted from the very first stars and galaxies in the universe , emitted when the universe was less than half its current age. ... About APOD | ... NASA Technical Rep.: ...

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• APOD: 2001 February 24 - Infrared Horsehead
• APOD: February 5, 1997 - Running Red Rings Around Jupiter
• APOD: 2004 February 20 - SN1987A's Cosmic Pearls

... 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. ...

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• cgvc 121
• HST this week: 035
• ST ScI Preprint #1398

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

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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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• U of O High Energy Physics Seminars
• Galaxy Gallery Page II

... The picture was captured using a special telescope called VISTA. VISTA is special because it doesn t collect normal light that our eyes can see. It looks at the Universe in light that we can t see, called Infrared . Unlike the visible light we see with our eyes, infrared light can travel through materials like cosmic dust and show us what is hiding within. ... In just the small section of the cosmos captured in this photograph, VISTA has discovered two new stars! ...

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• The Very Large Telescope Project
• The hidden fires of the Flame Nebula* | ESO
• Los Cielos de Am , The darkest sky and the two galactic hemispheres

... August 6, 1998 . Infrared Horsehead . ... Explanation: This famous cosmic dust cloud was imaged in infrared light by the European Space Agency's Infrared Space Observatory (ISO) satellite. The false-color picture shows the bright infrared emission from dust and molecular gas in part of the Orion star forming region surrounding the Horsehead Nebula . In visible light, the horsehead-shaped dust cloud looks dark against a background of bright glowing gas. ... About APOD > . ...

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• Jupiter's Moon Amalthea
• Hubble Observations Shed New Light on Jupiter Collision
• Jupiter's Moon Ganymede

The Cosmic InfraRed Background (CIRB) is the radiation from stars in many faint galaxies. ... The near-infrared (wavelengths near 2-3 microns) and optical (wavelengths near 500 nm) part of this extragalactic background light is just starlight redshifted into the infrared. But some starlight is absorbed by dust and re-emitted in the far-infrared (wavelengths near 100 microns). ... The CMB is by far the largest of these radiation fields, with a total intensity of 996 nW/m 2 /sr. ... Part 2 | ...

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• Cosmic InfraRed Background Images
• Prof. Edward L. (Ned) Wright
• Magnitudes and Colors

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

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• Thesis Figures
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... Home Education Classes AAA Spring Astronomy Class: The Physics of Astronomy тАУ February ? March 2016 . ... Classes . ... AAA Spring Astronomy Class: The Physics of Astronomy тАУ February - March 2016 . ... This MonthтАЩs Sky тАУ March 2016 . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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• This MonthтАЩs Sky тАУ February 2016 ? Amateur Astronomers Association of New
• Lecture Series 2011-2012 ? тАЬA Ray of Light in a Sea of Dark (Matter)тАЭ ?
• Astro-Imaging ? Amateur Astronomers Association of New York

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. ...

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• ESO reveals end of cosmic Dark ages | Astronotes
• WLM Galaxy: a Cosmic Living Fossil | Astronotes
• Sinead Mackle | Astronotes - Part 4

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Moon . ... 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 . ... Soft light . ... 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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• February 2007 | Astronomy.com
• Web Extra: Capturing a colorful sky | Astronomy.com
• The rich colors of a cosmic seagull | Astronomy.com

... Another option is to buy slides of astronomical objects at different wavelengths to show students why astronomers use different bands of the spectrum to bring out specific characteristics in celestial objects. ... He then uses the camera to scan the entire classroom, asking students to identify what they are seeing. ... Once students see light in action, they can investigate its properties - such as frequency, wavelength, and interference - with wave experiments. ...

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• ASP: An Ancient Universe - The Age of Light from the Most Distant Galaxies
• ASP: Star Science in the Autumn Sky
• ASP: Good Astronomy Activities on the WWW

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Armagh Observatory, 11 June 2015: Armagh Observatory reports that the next two weeks will provide an interesting opportunity to observe the brightest planet, Venus, and the largest planet, Jupiter, as they move towards one another in the evening twilight. ... The image shows the sky view towards the West at around 11pm on 20 June 2015. ... Professor Mark E. Bailey, Armagh Observatory, College Hill, Armagh BT61 9DG. ...

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• Objects in the Sky
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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 ...

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• UBV light curves (Duerbeck and Walter, 1976)
• UBV light curves (Lyutyi, 1976)

... Astrophysics Group . ... Exploring the Cosmic Dawn . ... Cosmic reionization corresponds to the epoch in which the first stars€а and black holes reionize the neutral intergalactic medium (IGM) that€аpervades the Universe following recombination, within a few hundred€аmillion years of the Big Bang. The epoch of reionization, and the€аpreceding ?dark ages? prior to the formation of the first stars,€аrepresent the last unexplored phases of cosmic evolution to be tested€аand explored. ...

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• Astrophysics Group Cosmic Microwave Background (CMB)
• OptInt PmWiki : PmWiki / Wiki Style Examples
• Astrophysics Group Cosmology

SAOtng can associate names with region markers in order to aid users in remembering the significance of the region. ... By default, marker regions that you create in SAOtng are defined to be either "source" regions or "background" regions and are colored green and red, respectively. ... This type name is controlled by the "Set Type (and Color)" option in the marker menu (activated using the right mouse button within a region). ... Colors can be associated with names for regions. ...

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• dictionary
• ChaMP Initial Data Release - X-ray
• The AstroStat Slog light curve

Ganymede . ... Ganymede Statistics . ... Hubble Finds Ozone on Jupiter's Moon Ganymede . ... Like Callisto , Ganymede is most likely composed of a rocky core with a water/ice mantle and a crust of rock and ice. ... Ganymede's mantle is most likely composed of ice and silicates, and its crust is probably a thick layer of water ice. ... Ganymede's surface is rich in water ice and Voyager and Galileo images show features which are evidence of geological and tectonic disruption of the surface in the past. ...

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• The Polar Aurora
• The Solar System
• Venus Picture List

Supernova 2002fk in NGC 1309 . This page is devoted to information on Supernova 2002fk in NGC 1309 Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. ... 2002/09/19.848 . ... JM Llapasset image . ... 13.0 . ... Josep M. Bosch . ... Josep M. Bosch image . ... vsnet-campaign-sn 476 ] SN 2002fk in NGC 1309 . ...

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• Supernova 2006X in M100
• Supernovae 2012fr in NGC 1365
• THE BRIGHT SUPERNOVA 1991T IN NGC 4527; AN AMATEURS PRESPECTIVE

... What's New? Bad Astronomy . ... News . ... The questions was: "During a flight, I saw a round rainbow shaped like a doughnut. ... However, she said that all rainbows are actually circles, and that she could not find a name for this phenomenon. ... One is that rainbows really aren't full circles. ... Basically, rainbows are due to light getting bent ("refracted") inside of raindrops. ... It's called a "glory", and is formed in a somewhat different way than rainbows. ... 2008 Phil Plait. ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Misconceptions
• Phil Plait's Bad Astronomy: Misconceptions: What Color is Mars?