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221. AAAP Meeting Announcement
Mark your calendars to reserve Tuesday, December 13 for a sensational astronomy meeting! The Amateur Astronomers Association of Princeton is presenting astronomer and author Kim Weaver for a presentation titled: "New Eyes on the Universe: Observing Beyond Hubble with the Chandra and Spitzer Space Telescopes," and will highlight violent processes and dust-enshrouded objects revealed only by searching for signatures in x-ray and infrared light. ...
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Ссылки http://www.princetonastronomy.org/graphic_emails/meeting_announce.html -- 4.4 Кб -- 12.12.2005
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222. Meade Instruments Corporation - Pictor Manual Part 16
... Meade Instruments Corporation . ... Meade Pictor XT-Series CCD Autoguider/Imagers . ... Take new sets of calibration frames if the temperature changes significantly.(or change the set you are using or the scaling if you are reusing calibration frames). ... You can also use scaleable dark frames called thermal frames. ... However, if you wish to reuse dark frames with images of different exposure times, you must turn the dark frame into a thermal frame by subtracting the bias information. ...
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Ссылки http://www.meade.com/manuals/pictor/pictor16.html -- 11.7 Кб -- 01.02.2006
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223. What is Redshift? (2dF QSO Redshift Survey - 2QZ)
... Under certain conditions, like those in the nucleus of a QSO, all atoms can be made to emit light at particular wavelengths. ... If that source is approaching the observer, the wave is squashed up onto itself making the wavelength shorter. ... This is redshift. ... You can see how the section of the QSO spectrum which we observe changes with redshift. ... We then see how far we had to slide the observed spectrum along the scale to make it match and that is the objects redshift. ... The 2QZ team . ...
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Ссылки http://www.2dfquasar.org/restframe.html -- 10.2 Кб -- 07.05.2008
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224. http://sn.sai.msu.ru/~sil/preprints/al319.pdf
... 13, Moscow, 119992 Russia 2 Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Karachai-Cherkessian Republic, 369167 Russia Received May 18, 2009 Abstract--Using the method of two-dimensional spectroscopy, we have investigated the kinematics and distribution of the gas and stars at the center of the early-type spiral galaxy NGC 7177 with a mediumscale bar as well as the change in the mean age of the stellar population along the radius. ...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/al319.pdf -- 868.1 Кб -- 09.04.2011
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