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1. http://www.issp.ac.ru/iao/2014/booklet/ia14_booklet_en1_page_B02.pdf
... Great oppositions. ... Proxima Centauri. ... Scientists proved that the problem of preserving the Earth's climate and the annual change of seasons can be solved by a small star, negligible mass, but similar to a main-sequence star, moving in a circular orbit around the Sun. ... Sombrero Galaxy. The Sombrero Galaxy, M104, is known as a holder of one of supermassive black holes. ... Roughly estimate the approximate mass of the supermassive black hole in the center of M104 (answer in solar masses m). ...
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Ссылки http://www.issp.ac.ru/iao/2014/booklet/ia14_booklet_en1_page_B02.pdf -- 257.5 Кб -- 22.10.2014
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2. Getting Help and Making Comments
... HST . ... APT . ... HST Overview . Overview . ... Phase I Proposing . ... Cycle 24 Announcement . ... Phase II Cycle 23 . ... Documents . ... After you have brought up APT you will see a "Help" menu on the top menu bar. From here you can also bring up the documents that will help you to learn APT. Phase I: You can bring up Phase I Specific APT Training Materials to learn about using APT to submit your Phase I proposal. ... These are the same documents you will find on the HST Website. ...
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Ссылки http://www.stsci.edu/hst/proposing/apt/help_comments -- 15.6 Кб -- 10.04.2016
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3. Hands On; Transparency
... The problem turned out to be that I was always using the same background in Photoshop, and when I made it transparent, the edge pixels, having been anti-aliased to merge with that color, did not turn transparent. Now I always use the same background color in Photoshop that I intend to use on my web page. ... Now, one of the big tricks here involves the translation from RGB mode to Indexed Colors. ... Note down the 2 colors it chose to dither together and hit Command-Z to undo the mode change. ...
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Ссылки http://www.sai.msu.su/~megera/gimp/handson/HTML/transparency.html -- 9.9 Кб -- 22.12.2007
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4. Frames of Reference: The Basics
... 22.Reference Frames . ... To derive the motion of a penny dropped inside an airliner moving at 600 miles/hr (about 1000 km/hr)--should we calculate it with respect to the interior of the airliner, or with respect to the ground? ... And if a similar penny is let go inside an orbiting spaceship--should its motion be calculated relative to the interior of the spaceship, or relative to the Earth outside? ... How do observations differ in the two frames--the airliner cabin and the Earth? ...
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Ссылки http://www.iki.rssi.ru/mirrors/stern/stargaze/Sframes1.htm -- 11.0 Кб -- 21.12.2007
[ Сохраненная копия ] Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/Sframes1.htm -- 11.0 Кб -- 22.12.2007
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[ Сохраненная копия ] Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/Sframes1.htm -- 11.0 Кб -- 22.12.2007
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5. Phil Plait's Bad Astronomy: Bad News
... What's New? Bad Astronomy . ... News . ... In a nutshell, the answer is that you would fall down the hole, accelerating (that is moving faster and faster) all the way to the center of the Earth. ... Although gravity would get weaker as you approach the center [of the Earth], your motion would keep you accelerating [the emphasis is mine]. ... Although gravity would get weaker as you approach the center, your motion would keep accelerating. which is correct! ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/bad/news/marilyn4.html -- 22.6 Кб -- 09.04.2016
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6. Frames of Reference: The Basics
... To derive the motion of a penny dropped inside an airliner moving at 600 miles/hr (about 1000 km/hr)--should we calculate it with respect to the interior of the airliner, or with respect to the ground? ... And if a similar penny is let go inside an orbiting spaceship--should its motion be calculated relative to the interior of the spaceship, or relative to the Earth outside? ... Each such choice is known as a frame of reference . Some possible frames are -- the interior of the airliner, . ...
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Ссылки http://www.iki.rssi.ru/magbase/REFMAN/STARGAZE/Sframes1.htm -- 7.5 Кб -- 21.12.2007
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7. Amateur Telescope Makers of Boston
... Apr 14, 2016 - Monthly Meeting . ... The Amateur Telescope Makers of Boston, Inc. ATMoB) is an astronomy club devoted to telescope making, observing, and studying the heavens. ... CURRENT MOON . ... April Sky . ... Lyrids Meteor Shower . ... Sources: NASA JPL Space Calendar , StarDate Online , Sky Telescope , Harvard-Smithsonian Center for Astrophysics , RASC Observer’s Handbook , Abrams Planetarium Sky Calendar and Astronomy Magazine . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...
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8. pointing
The steps in making a pointing model are listed below. ... While tracking the source rise to set, the tiedowns are pulled through a range of about 14 inches (taking 14 minutes) . ... We need a strong point source as sband because we want to measure the peak even when we are out of focus (so we can determine the best za location). ... Time: this takes about 80 hours (averaging 2 hours/source with wait time.. ... so 4 days 12 hours a day will probably work when you include the time for the source. ...
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Ссылки http://www.naic.edu/~phil/pnt/makingthemodel.html -- 11.9 Кб -- 21.05.2012
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9. Educator's Guide to The Inverse Square Law
... How much brighter is the Sun as viewed from the planet Mercury as compared to Earth ? ... Actually, all of these questions can be answered through a very simple mathematical relationship known as the inverse square law. ... As the distance from the Sun increases the surface area of the sphere grows by the square of the distance. ... Common sense tells us that the Sun will be brighter and the inverse square law tells us how much brighter. ... gr = 0.912 G or 91.2% gravity felt at Earth's surface. ...
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Ссылки http://www.iki.rssi.ru/solar/eng/edu/invsquar.htm -- 11.4 Кб -- 15.10.1997
[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/edu/invsquar.htm -- 12.1 Кб -- 15.03.1998
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[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/edu/invsquar.htm -- 12.1 Кб -- 15.03.1998
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10. xterm compatibility problems
September, 2008 The root of the problem is that people are morons, more particularly, developers are morons, very particularly, xterm developers are morons. ... In fairness, it's not really the xterm that's incompatible, it's the xterm descriptions that ship with modern operating systems that are incompatible with older xterms. ... The developers had to know that people would actually USE the cool new features they put into xterms. ... A modern xterm! ... Line 'em up along with the xterm developers. ...
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Ссылки http://hea-www.harvard.edu/~fine/opinions/xterm-problems.html -- 7.9 Кб -- 10.04.2016
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11. ASP: Sharing the Universe
... If you don't know the exact answer to a question, don't panic and don't make up an answer. ... If you can, give the visitor a more general answer related to the question OR ask them about their interest in the topic -- get the visitor talking! ... Remember: No one knows everything. 6 Ways to respond to a Question you don't know the Answer to: . ... Sometimes they don't even care about getting an answer to the question they asked they just want to know more about what you do and about astronomy. ...
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Ссылки http://www.astrosociety.org/SharingTheUniverse/know_tips.html -- 10.0 Кб -- 02.10.2012
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12. Pre-Lab 1
... For students enrolled in PHYS1101, once you've finished the lesson you will need to go into Wattle and answer the pre-lab questions in this week's homework. Question 1 . Imagine that someone has given you a plot of the probability distribution function for the likely temperature in Canberra in July. ... Click here to see the answer. ... Question 2 An electric circuit produces a variable voltage, described by this probability distribution function: . ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Labs/L01/index.html -- 5.3 Кб -- 03.02.2013
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13. Optimization of spectroscopic observations
... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...
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Ссылки http://mavr.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 02.10.2012
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14. Frequently Asked Questions - Apache HTTP Server
... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > FAQ . ... Background information about the Apache HTTP Server. ... The latest version of the Apache Frequently-Asked Questions list can always be found at the main Apache web site. ... A Permission denied error in the error_log , accompanied by a Forbidden message to the client usually indicates a problem with your filesystem permissions, rather than a problem in the Apache HTTP Server configuration files. ...
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Ссылки http://www.sao.ru/tb/manual/en/faq/all_in_one.html -- 16.4 Кб -- 10.12.2010
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15. Астронет > Thin Rings Around Polarized Saturn
... Thin Rings Around Polarized Saturn . ... Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: How thin are the rings of Saturn? ... The above artistic looking image was taken early last month in infrared polarized light. ... NASA Official: Jay Norris. ... Публикации с ключевыми словами: Saturn - saturn rings - поляризация света - Сатурн - кольца Сатурна . Публикации со словами: Saturn - saturn rings - поляризация света - Сатурн - кольца Сатурна . ... Древние кольца Сатурна . ...
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Ссылки http://www.astronet.ru/db/msg/1210479/eng/ -- 22.4 Кб -- 19.12.2005
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16. Download building of the radiospec package Bojan Nikolic web pages (r. 329)
... Bojan Nikolic web pages (r. 329) . ... Note however that the radiospec is built in the ?build? sub-directory of the directory you installed it to and is not installed ? ... Build radiospec wget http://www.mrao.cam.ac.uk/~bn204/soft/radiospec-1.0.tar.gz tar --strip-components = 1 -xzvf radiospec-1.0.tar.gz PATH = $INSTALLDIR/bin:$PATH scons PKG_CONFIG_PATH = $INSTALLDIR/lib/pkgconfig/ . ... You will at least also need the numpy package for Python . ... Download & building of the radiospec package . ...
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Ссылки http://www.mrao.cam.ac.uk/~bn204/galevol/speca/build.html -- 19.5 Кб -- 04.04.2016
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17. WARNING MISSION: Background
Disastrous earthquakes happen 100 to 200 times a year. ... There is a chance that the data of ionospheric plasma observations hold an answer to the latter question. Satellites and ground-based facilities may detect earthquake precursors in the ionosphere a few hours or days before the main shock. ... ULF "Hz"-oscillations have been recorded several hours before the main shock in a narrow magnetic field tube (40...100 km along the satellite trajectory) conjugated with epicenter of the earthquake. ...
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Ссылки http://space.univ.kiev.ua/projects/warning/background.html -- 6.8 Кб -- 15.02.2000
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18. Meade Instruments Corporation - Frequently Asked Questions
... Meade Instruments Corporation . Telescopes ћ Binoculars ћ Microscopes . ... Frequently Asked Questions: LX200GPS . When I align the telescope, the alignment star is not in the viewfinder. ... After I select an object and press GOTO, the Autostar displays "Slewing.....", but does not seem to move. Is my Autostar broken? ... Can I use my Autostar II on his telescope to access my user objects? ... Choosing A Telescope . ... Copyright 2006 Meade Instruments Corporation, All Rights Reserved. ...
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Ссылки http://www.meade.com/support/lx200gps_faq.html -- 15.0 Кб -- 01.02.2006
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19. http://star.arm.ac.uk/nibulletin/2010/Nov16.html
... Date: 16 November 2010 08:09:30 GMT . Subject: Telescopes and Meteorites, Lectures, BCO movies, Shuttle delay . ... Armagh Planetarium: 'Telescopes and Meteorites'. The Irish Astronomical Association will be at Armagh Planetarium this evening (Tuesday 16th) to answer your questions about choosing and using a telescope or binoculars. ... Contact Armagh Planetarium for more details: www.armaghplanet.com , or see www.irishastro.org . ... TITLE: "Tunguska Events in Ireland?" ... 4: BCO EVENTS: . ...
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Ссылки http://star.arm.ac.uk/nibulletin/2010/Nov16.html -- 9.7 Кб -- 16.11.2010
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20. Problems linking files
. filename : Cross-device link . The file you are trying to make a link to is located on a different physical device. The solution is to create a symbolic link . directory_name is a directory . You are trying to make a link to a directory. Check the pathname for the file. ln: filename : File exists . A file with the same name as the linkname already exists in the destination directory. Use a different name for the linkname.
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Ссылки http://comet.sai.msu.ru/UNIXhelp/problems/link.html -- 2.2 Кб -- 17.01.1997
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Астронет | Научная сеть | ГАИШ МГУ | Поиск по МГУ | О проекте | Авторам
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