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1. APOD: 2000 June 21 - Solstice Celebration
... 2000 June 21 . Solstice Celebration . ... Each individual image highlights a different temperature regime in the upper solar atmosphere and was assigned a specific color; red at 2 million, green at 1.5 million, and blue at 1 million degrees C. The combined image shows bright active regions strewn across the solar disk, which would otherwise appear as dark groups of sunspots in visible light images, along with some magnificent plasma loops and an immense prominence at the righthand solar limb. ...
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Ссылки http://www.sai.msu.su/apod/ap000621.html -- 4.7 Кб -- 01.10.2012
[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/sun/sun3col_thompsoneit_big.html -- 4.6 Кб -- 06.12.2000
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[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/sun/sun3col_thompsoneit_big.html -- 4.6 Кб -- 06.12.2000
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2. Making HST Pictures: Illustrations
Making HST Pictures: Examples and Illustrations . ... These illustrations represent some of the steps and techniques used to produce “pretty pictures” from HST images. ... TIFFs (ftp) . ... Separate images are exposed through different color filters. ... An alternate way to make color images . ... Eight bit (one byte) images contain 256 different values that may be represented by 256 shades of gray or 256 arbitrary colors from a color map (or palette) of all possible colors. ...
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Ссылки http://www.stsci.edu/~levay/color/index.html -- 11.6 Кб -- 27.10.2004
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3. APOD: 2004 March 25 - An Orion of a Different Color
... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2004 March 25 . An Orion of a Different Color . ... But the striking picture combines images taken through three separate filters, each designed to record different emission lines - light from Sulfur, Oxygen, and Hydrogen atoms glowing in the tenuous nebular gas. ... About APOD | ... NASA Web Site Statements, Warnings, and Disclaimers . ...
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Ссылки http://www.sai.msu.su/apod/ap040325.html -- 5.1 Кб -- 02.10.2012
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4. Solstice Celebration
... Today or tomorrow, depending on your time zone, the Sun reaches its northernmost point in planet Earth's sky marking a season change and the first solstice of the year 2004. In celebration, consider this delightfully detailed, brightly colored image of the active Sun . From the EIT instrument onboard the space-based SOHO observatory, the tantalizing picture is a false-color composite of three images all made in extreme ultraviolet light. ... Publications with keywords: Sun - ultraviolet . ...
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Ссылки http://www.astronet.ru/db/xware/msg/1198452 -- 14.3 Кб -- 22.06.2004
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5. http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BA6149A58-A920-49AF-96EE-0FAD66E4F93D%7D
. The image is a composite of separate exposures made by the WFC3 instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges in the near infrared. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are: F105W (Y) blue; F125W (J) green; F160W (H) red. NASA/ESA/G. Illingworth/R. Bouwens/ HUDF09 Team
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Ссылки http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BA6149A58-A920-49AF-96EE-0FAD66E4F93D%7D -- 3.6 Кб -- 10.04.2016
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6. M42 Color Images
... As an experiment, I made some three-color images of Messier 42, more commonly known as the Great Nebula of Orion. ... green enhanced . ... halfsize or fullsize . ... Each image is a ``true color'' composite of three monochromatic images, in which the red, green, and blue intensities each correspond to the intensity of one of the original images. ... The HST image is assembled from different filters than mine: red is Nitrogen [II] at 6583 , green is H-alpha at 6563 , and blue is O [III] at 5007 . ...
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Ссылки http://www.naic.edu/~gibson/m42/ -- 7.0 Кб -- 19.08.2004
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7. Magnitudes and Colors
Astronomers usually measure the flux of an object by collecting light with a telescope, sending it through a known filter, and then determining the power. ... But astronomers usually give their photometric results in terms of magnitudes. ... Astronomers define an absolute magnitude that is independent of the distance of a star and only depends on the intrinsic properties of the object: the absolute magnitude is the magnitude the star would have if it were 10 parsecs away from the Earth. ...
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Ссылки http://www.sao.ru/cats/~satr/cosmo/magcolor.htm -- 4.1 Кб -- 18.11.1997
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8. 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. ...
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Ссылки http://zebu.uoregon.edu/sb2.html -- 4.8 Кб -- 26.05.2000
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9. Mapping Pixel Values to Screen Intensity
To change the Scaling Function (how pixel values are binned into color levels): . ... For example, the basic grey-scale color map specifies no intensity for any color at the lowest color level, full intensity for all colors at the highest color level, with the red, green and blue intensities varying linearly for intermediate levels. ... At low bias, low color levels (i.e., low pixel values) will have non-zero intensities, while at high bias only high pixel values will have non-zero intensity. ...
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Ссылки http://hea-www.harvard.edu/RD/saotng/scale.html -- 6.3 Кб -- 01.10.2012
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10. ASP: Black Holes to Blackboards: Seeing the Light
... 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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Ссылки http://www.astrosociety.org/pubs/mercury/9801/lockwood.html -- 12.0 Кб -- 02.10.2012
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11. The Direction Assigned to Electric Currents
... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...
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Ссылки http://www.iki.rssi.ru/mirrors/stern/Education/woppos.html -- 9.3 Кб -- 21.12.2007
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12. The Direction Assigned to Electric Currents
... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...
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Ссылки http://www.cosmos.ru/mirrors/stern/Education/woppos.html -- 9.3 Кб -- 24.03.2006
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13. Главная - Астрономия и Телескопостроение
... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...
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14. http://www.atnf.csiro.au/computing/software/gipsy/sub/gdi_cinfo.dc2
Function: GDI_CINFO Purpose: Obtains info about the color tables of the display. Category: DISPLAY File: gdilib.c Author: K.G. Begeman Use: INTEGER GDI_CINFO( GDI_ID, Input INTEGER MINCOL, Output INTEGER MAXCOL, Output INTEGER NCOLORS, Output INTEGER BLANK ) Output INTEGER GDI_CINFO Returns zero on success, negative on error. ... MINCOL Minimum display value for which a color can be assigned. MAXCOL Maximum display value for which a color can be assigned. ...
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Ссылки http://www.atnf.csiro.au/computing/software/gipsy/sub/gdi_cinfo.dc2 -- 2.1 Кб -- 06.08.1999
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15. Reading user input
To read standard input into a shell script use the read command. For example: echo "Please enter your name:" read name echo "Welcome to Edinburgh $name" . This prompts the user for input, assigns this to the variable name and then displays the value of this variable to standard output . ... For example: echo "Please enter your surname\n" echo "followed by your first name: \c" read name1 name2 echo "Welcome to Glasgow $name2 $name1" . ...
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Ссылки http://comet.sai.msu.ru/UNIXhelp/scrpt/scrpt2.3.html -- 2.3 Кб -- 17.01.1997
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16. Correction of the energy scale in specific pixels
... Ideally, this map contains the energy offset for each pixel (expressed in analog-to-digital units, adu). ... High-energy particles hitting the EPIC pn CCD during the offset map calculation may cause the affected pixels to get offset values which are incorrect by a few adu. ... Due to the specific method of deriving the offset map onboard, the affected areas occur often in blocks of four consecutive pixels along readout direction. ... The affected pixels usually get an offset which is too small. ...
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Ссылки http://xmm.vilspa.esa.es/sas/6.1.0/doc/epreject/node4.html -- 14.6 Кб -- 22.11.2004
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17. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Mad Science . ... Are colored dwarfs actually colored or are they different kinds of stars? ... Therefore a white dwarf is very bright, and a brown dwarf is very dark. ... Brown dwarfs are a newly discovered type of object, which are midway between stars and planets. ... Several brown dwarfs have been recently discovered orbiting normal stars; you can find more about them at one of my favorite web sites, The Nine Planets , on the page called "Other Solar Systems?" ...
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Ссылки http://www.badastronomy.com/mad/1997/dwarfcolor.html -- 20.4 Кб -- 09.04.2016
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18. OptInt PmWiki : PmWiki / Access Keys
OptInt PmWiki : Pm Wiki / Access Keys . ... On Windows with Internet Explorer, press ALT + the access key. With Firefox, press SHIFT + ALT + the access key. ... Example: <a href="http://example.com" accesskey="x">Example</a> would create a link to example.com that could be triggered by clicking on the linked word "example" or using the access key Akey+x. That same action key link could be created in PmWiki markup by typing %accesskey="x"%[[http://example.com|Example]]%% , like this: Example . ...
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Ссылки http://www.mrao.cam.ac.uk/projects/OAS/pmwiki/pmwiki.php/PmWiki/AccessKeys?action=print -- 15.0 Кб -- 01.03.2014
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19. Astronaut Bio: Dale A. Gardner
... Dale A. Gardner . NASA Astronaut (deceased) . ... NASA EXPERIENCE: б Gardner was selected as an Astronaut Candidate by NASA in January 1978, reporting to the Johnson Space Center in July 1978.б In August 1979, he completed a one-year training and evaluation period, making him eligible for assignment as a mission specialist astronaut .б He subsequently served as the Astronaut Project Manager for the flight software in the shuttle onboard computers leading up to the first ...
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Ссылки http://www.jsc.nasa.gov/Bios/htmlbios/gardner-da.html -- 9.6 Кб -- 07.07.2015
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20. ADASS 2002 Conference Proceedings
... ClassX is a project aimed at creating an automated system to classify X-ray sources and is envisaged as a prototype of the Virtual Observatory. ... The most fundamental are: (a) classification methods and algorithms, (b) selection and definition of classes (object types), and (c) identification of source counterparts across multi-wavelength data. ... Using different sets of training parameters (attributes), we get different classifiers for the same list of class names (e.g., Figure 1). ...
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Ссылки http://www.adass.org/adass/proceedings/adass02/P4-10/ -- 13.2 Кб -- 12.03.2003
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