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http://www.sai.msu.su/~megera/gimp/handson/HTML/buttonmask.html.
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1. Darks GPI Data Pipeline 1.0 documentation
... GPI Data Pipeline 1.0 documentation . GPI IFS Data Handbook . ... Darks . ... Using Darks in GPI Pipeline Reduction: . ... Like all IR detectors, the Hawaii 2-RG detector in GPI has nonzero dark current. Typical values are much less than 1 count per second per pixel, but some ?hot? pixels have much higher dark rates. ... Periodic dark observations taken during GPI I&T at UCSC show that the detector?s complement of hot pixels evolves slightly but noticeably on two week timescales. ...
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Ссылки http://www.stsci.edu/~mperrin/software/gpidata/ifs/steps/darks.html -- 15.8 Кб -- 14.02.2014
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2. Lighting plug-in
... This plug-in enables you to add various types of lighting effects to your (RGB) image. ... Directional light . ... Well, you get the idea :) The default settings for this light-type is [-0.5,-0.5,-1.0]. ... Higher values makes your image reflect a lot of light (appear lighter or more intense), while smaller values makes it appear more dull or matte. ... A value of 1.0 makes your image very shiny (bright high-lights) while smaller values makes you image less shiny, making the high-lights dimmer. ...
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Ссылки http://www.sai.msu.su/~megera/gimp/tomb/lighting.html -- 9.5 Кб -- 22.12.2007
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3. The Very Large Telescope Project
... 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 Unit Telescopes Overview - This page is outdated, an update is in process.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 Secondary mirror (M2 Unit) - This page is outdated, an update is in process.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 Coating Unit - This page is outdated, an update is in process. ...
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Ссылки http://www.eso.org/projects/vlt/ -- 8.6 Кб -- 03.04.2006
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4. Armagh Observatory
... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... It is indeed a feeble light that reaches us from the starry sky. ... The 9th European Symposium for the Protection of the Night Sky takes place from September 17th - 19th 2009 in Armagh, Ireland. ... Armagh City and District Council Policy - PDF Format . ... Light Pollution and Armagh Poster - PDF format . ... Parliamentary Report, Light Pollution and Astronomy - PDF Format (862K) . ... Is light pollution killing our birds?...
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Ссылки http://star.arm.ac.uk/darksky/ -- 8.9 Кб -- 12.02.2013
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5. What is HISA?
... self-absorption - the absorption of light shining on an object by a process similar to that which produced the light originally; if a cloud emits less light than it absorbs from other clouds behind it, this net loss of light, termed self-absorption , causes the foreground cloud to appear darker than the background field (the term is from spectroscopy, where small absorption dips sometimes occur in larger emission lines, making the latter look as if it is absorbing part of itself) . ... HISA Main ...
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Ссылки http://www.naic.edu/~gibson/hisa/hisa_expl.html -- 8.6 Кб -- 26.02.2005
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6. Hubble throws light on dark matter | Astronotes
Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Our Galaxy . ... Universe . Other Galaxies . ... Space Flight . ... The light and the dark: a HST image of galaxies with the distribution of dark matter superimposed (Image credit: NASA, ESA, P. Simon (University of Bonn) and T. Schrabback (Leiden Observatory)) . ... A combination of 575 images from the Hubble Space Telescope and data from ground-based telescopes, the image contains 446 000 galaxies. ...
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Ссылки http://www.armaghplanet.com/blog/hubble-throws-light-on-dark-matter.html -- 41.2 Кб -- 09.04.2016
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7. ASP: Light Pollution
ACTIVITY 3 . ... In this activity, students observe the design of outdoor lighting and discuss how this affects the efficiency and effectiveness of the job which the lighting is intended to do and the degree of light . ... More advanced students may also observe and describe the spectrum of the outdoor lighting and how that is related to the effectiveness of the lighting and to the degree of light pollution. ... An Example: The Light Pollution Project in the Schools in Greece . ...
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Ссылки http://www.astrosociety.org/edu/publications/tnl/44/lightpoll5.html -- 17.2 Кб -- 02.10.2012
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8. Phil Plait's Bad Astronomy: Misconceptions
... Bad Astronomy . Misconceptions . ... Bad Astronomy : "That's as remote as the dark side of the Moon!" ... As the tired, hackneyed refrains went on, one in particular caught my ear: " Fly me away to the bright side of the moon, and meet me on the other side." ... As the Moon orbits the Earth, different parts of it get illuminated by the Sun. ... Bad Addendum : At the end of the album "Dark Side of the Moon" by Pink Floyd, there is a voiceover that actually says "There is no dark side of the moon. ...
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Ссылки http://www.badastronomy.com/bad/misc/dark_side.html -- 21.4 Кб -- 09.04.2016
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9. Database of Optical Properties -- Level: subsubpage
The efficiency of interaction of radiation with a particle and hence its optical properties depend on the particle chemical composition, size, shape, structure, etc. ... Particle size expressed in units of the wavelength of incident radiation, together with chemical composition, most strongly affects the optical properties of a scatterer. ... There are many methods to solve the light-scattering problem for a homogeneous spheroid (our survey of the light-scattering methods see here ). ...
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Ссылки http://www.astro.spbu.ru/DOP/2-MODS/INTROD/index.html -- 9.5 Кб -- 19.11.2010
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10. Lecture Series 2011-2012 ? тАЬA Ray of Light in a Sea of Dark (Matter)тАЭ ?
... Home Lectures Lecture Series 2011-2012 Lecture Series 2011-2012 ? тАЬA Ray of Light in a Sea of Dark (Matter)тАЭ ? Charles Keeton . ... Charles Keeton , associate professor of physics and astronomy at Rutgers University and faculty director of the Aresty Research Center for Undergraduates , will speak to the AAA Friday, March 2, on тАЬA Ray of Light in a Sea of Dark (Matter).тАЭ The free public lecture begins at 6:15 p.m. in the Kaufmann Theater of the€а American Museum of Natural History . ...
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Ссылки http://www.aaa.org/lectures/lecture-series-2011-2012/lecture-series-2011-2012-a-ray-of-light-in-a-sea-of-dark-matter-charles-keeton/ -- 101.2 Кб -- 10.04.2016
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11. Extraction and correction of an X-ray light curve for a point-like source
SAS home . SAS Watchout items . ... This thread contains a step-by-step recipe to extract a light curve of a point-like source for all the X-ray cameras, subtracting the background and correcting for exposure loses. ... The SAS task barycen performs this correction. ... If the following files are available: a) RGS event list; b) RGS source list, a call to the task performing light curve extraction, correction and background subtraction rgslccorr allows a user to create the light curve. ...
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Ссылки http://xmm.vilspa.esa.es/sas/8.0.0/documentation/threads/timing.html -- 9.5 Кб -- 27.06.2008
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12. International Dark-sky Association - Ida, AstroGuide Listing
The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . The IDA is a non-profit, membership-based organization. IDA's goal is to be effective in stopping the adverse environmental impact of light pollution and space debris. ... 520) 293-3198 . ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
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Ссылки http://www.astronomy.net/astroguide/ag228.html -- 12.6 Кб -- 09.04.2016
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13. http://zebu.uoregon.edu/2000/ph102/30115.html
Wave-Particle Duality of Light. click here to see a wave experiment . ... In the wave theory, greater light intensity simply means more photons. Each photon ejects electrons in the same way, so more intensity means more electrons. Threshold frequency and electron K.E. should not be affected by intensity. ... Light frequencies below the threshold eject no electrons, no matter how intense the light. Light frequencies above the threshold eject electrons, no matter how low the intensity. ...
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Ссылки http://zebu.uoregon.edu/2000/ph102/30115.html -- 6.4 Кб -- 04.09.2003
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14. Between Light and Dark Matters, 24 Feb 2005
... Gallery . ... Between Light and Dark Matters, 24 Feb 2005 . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . Title: Between Light and Dark Matters, 24 Feb 2005 . Description: An ephemeral exhibition of an artwork by ANU student Ruth Watson, using the data set of the 2dFGRS. Art Exhibition in the Yale-Columbia, February 2005 . ... Owner: Gallery Administrator . ... Views: 1670 . By: Gallery Administrator . ... Views: 1562 . ... Views: 1550 . ...
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Ссылки http://www.mso.anu.edu.au/gallery3/index.php/publicEvents/watsonExhibition -- 12.9 Кб -- 10.04.2016
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15. Seasons of the Year
... On the equator (point C) the sun would always rise until it was overhead, while at the poles (A and B) it would always be on the horizon, going around the horizon once a day. ... Because everything is symmetric with respect to the line AB, the dark and light portions are always equal, and so are day and night, anywhere on Earth. ... Twice a year, the angle is as big as it can get, at the summer and winter solstices , when it reaches 23.5 degrees. ... That part of Earth enjoys summer . ...
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Ссылки http://www.iki.rssi.ru/magbase/REFMAN/STARGAZE/Sseason.htm -- 7.5 Кб -- 21.12.2007
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16. http://crydee.sai.msu.ru/ftproot/pub/rec/music/lyrics/cs-uwp/s/sisters.of.mercy/light
LIGHT words and music by andrew eldritch The lights shine clear through the sodium haze The night draws near and daylight fades Ignore the voices discard the day For the brand new darkness for the bright new way Hit Well there have been better plans But none that I could ever understand Emerald signal the green on black The lights say move say never look back And so I find a place where I've never been seen Find another ...
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Ссылки http://crydee.sai.msu.ru/ftproot/pub/rec/music/lyrics/cs-uwp/s/sisters.of.mercy/light -- 2.2 Кб -- 26.03.1992
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17. XWare > APOD
... Mars Through a Small Telescope . ... Bright Lights, Dark City . ... Rich star fields and glowing hydrogen gas silhouette dense, opaque clouds of interstellar gas and dust in this Hubble Space Telescope close-up of IC 2944, a bright star forming region in Centaurus, 5,900 light-years away. ... As Earth and Mars near their closest approach in nearly 60,000 years on August 27, the red planet has begun to appear dramatically bright and show interesting details through telescopes and binoculars. ...
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Ссылки http://www.astronet.ru/db/xware/apod.html?page=96&d=2006-03 -- 15.1 Кб -- 12.04.2016
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18. Nature of CCD Output
... The nominal output of a CCD--element to a quantum of light can be given as . ... In the following we ignore the pre-flash and skim term, and hence only take the bias and dark frames into account. The objective in reducing CCD frames is to determine the relative intensity of a science data frame. ... flat frames to determine the term . ... This is achieved by averaging Dark, Flat and Science frames. is further reduced if S=F , then Equation ( ) simplifies to . ...
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Ссылки http://www.sao.ru/precise/Midas_doc/doc/94NOV/vol2/node33.html -- 8.2 Кб -- 23.02.1996
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19. Vitaly Goranskij, SAI/Moscow Univ.
... SCIENCE AND BUSINESS . Such a trifle as a starry night sky of largest observatories turned out to be a small change coin in commercial bargains for exclusive communal services in Russia, and for a few elite flats in penthouses in Ukraine. SCIENCE AND BUREAUCRATISM . ... Till in Russian) . ... Clericalization of science and education (Till in Russian). ... Researcher of the Sternberg Astronomical Institute, The Moscow University. ... SAI home page . ... October, 2008) . ... November, 2007) . ...
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Ссылки http://jet.sao.ru/jet/~goray/ -- 6.7 Кб -- 07.08.2010
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20. APOD: August 19, 1999 - Light From The Dark Sun
... 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 > . ...
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Ссылки http://www.sai.msu.su/apod/ap990819.html -- 4.1 Кб -- 02.10.2012
[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/sun/augeclipse_cagas_big.html -- 4.0 Кб -- 07.12.2000
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[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/sun/augeclipse_cagas_big.html -- 4.0 Кб -- 07.12.2000
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