... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

... Meade Instruments Corporation . ... Autostar Computer Controllers . 497 Autostar . ... One of the most important advances in telescope control in the past 25 years, the Meade #497 Autostar Computer Controller turns the ETX into an automatic celestial object locating system. ... The #497 Autostar Computer Controller plugs into the control panel of ETX-90EC, ETX-105EC, and ETX-125EC telescopes and enables automatic location of more than 30,000 celestial objects. ... about meade | ... Meade 4M | ...

... Research of an atmosphere of the Earth and other planets of Solar system by optical methods . ... The long-term experience of study of atmospheres of planets of Solar system in a department of physics of planets has defined directions and methods of researches spent for laboratory . ... The tasks of laboratory are researches by optical methods of structure of a Terrestrial atmosphere, namely study of spectra of absorption of its compound radiation of natural and artificial sources. ...

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Lectures . ... Home Lectures Lecture Series 2010-2011 Lecture Series 2010-2011 ? Particle Physics at the LHC and Cosmology? by Michael Tuts . ... Lecture Series 2010-2011 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

University Satellites and . Space Science Education . ... It is necessary to select a topic interesting from scientific point of view and simple enough to allow students understand and participate in all stages of experiment from measurements via data analysis to physical inference. ... Solar modulation effects and physical characteristics and analysis of the major solar events are possible only by joining data from space-born and surface particle and radiation detectors. ...

... Contacting and discussing with people sharing your interests, participating in night sky observations with telescopes as well as a large choice of astronomical books, magazines and video-tapes out of our club library. ... A reasonable compromise for observing both planets and brightest deep sky objects ( nebulae, galaxies) are either a 4 to 8 inch mirror telescope ( Newton, Schmidt-Cassegrain ) or a 3 to 4 inch refracting ( lens) telescope. ... Where can I buy a telescope in Luxembourg ? ...

Astronomical Data Analysis Software and Systems VII ASP Conference Series, Vol. ... CDS GLU, a Tool for Managing Heterogeneous Distributed Web Services P. Fernique, F. Ochsenbein and M. Wenger Centre de Donn’ees astronomiques de Strasbourg, 11 rue de l'universit’e, 67000 STRASBOURG ­ FRANCE, Email: question@simbad.u­strasbg.fr Abstract. ... In the data base %ActionName %Description %Url simbad Simbad query by identifier http://simbad.u­strasbg.fr/simbad?id=$1 In the GLU dictionary Figure 1. ...

... Space flight . ... Baikonur . ... Space camp . ... The Baikonur space vehicles and missiles launch site is a complicated engineering and technical complex. ... The "ATLAS aerospace" company invites you to visit the Baikonur launch site, to witness a space vehicle launch, as well as to participate in pre-launch activities. ... Directly before the space vehicle launch you can get acquainted with its crew, attend a space suits donning and integrity check procedures and a press - conference. ...

Альтернативный форум . Scientific.ru Все форумы . ... Владимир Привалов - 14.03.2006 21:11 . Re: И все-таки, какова масса нейтрино? . x203a; x203a; x203a; в ответ на: Re: И все-таки, какова масса нейтрино? Владимир Наседкин . Масса электронного нейтрино: "Mass m < 3 eV Interpretation of tritium beta decay experimentsis complicated by anomalies near the endpoint, and the limits are not without ambiguity." Масса мюонного нейтрино: "Mass m < 0:19 MeV, CL = 90%" . ...

This document describes how to efficiently serve an arbitrary number of virtual hosts with Apache 1.3. ... get the server name from the Host: header UseCanonicalName Off # this log format can be split per-virtual-host based on the first field LogFormat "%V %h %l %u %t \"%r\" %s %b" vcommon CustomLog logs/access_log vcommon # include the server name in the filenames used to satisfy requests VirtualDocumentRoot /www/hosts/%0/docs VirtualScriptAlias /www/hosts/%0/cgi-bin . ...

АНОНС НАУЧНЫХ КОНФЕРЕНЦИЙ 1998-99 гг. ... An AAS Electronic Announcement Dear Colleague: NASA has approved development of a Wide Field Camera 3 (WFC3) for installation in the HST on the 2002 Servicing Mission. A Scientific Oversight Committee (SOC) is being established to ensure that the broad interests of the scientific community are represented in the development of WFC3. The primary task of the SOC will be to advise the HST Project and STScI in all areas of scientific performance of WFC3. ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Principle of generation of radio images Radio telescope 's beam Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication SSRT - Siberian Solar Radio Telescope . ...

International School "Frontiers in Numerical Gravitational Astrophysics" . Erice ( Italy ), june 27-july 5, 2008 . ... you and/or your students may be interested in the Course "Frontiers in . Numerical Gravitational Astrophysics" that will be held in Erice (Italy) . ... Univ. of Roma, La Sapienza , Italy . ... Univ. of Texas, Austin, USA . ... FRONTIERS IN NUMERICAL GRAVITATIONAL ASTROPHYSICS| . 2nd Course of the International School on | ... Joshua Barnes (Univ. of Hawaii, USA) . ...

... Besides being an allergy sufferer's dream come true, such a room is now a reality for the JSC Genesis Mission Team that resides in Building 31-N. This group of dedicated professionals has been working diligently for the past four years to renovate and prepare cleanroom facilities in order to receive the Genesis spacecraft and curate the samples it retrieves. ... Pictured below the spacecraft, the JSC Genesis Mission Team displays an array of solar wind collectors. ...

... GCR and SCR are primary cosmic rays. 10-15 years after the discovery of cosmic radiation (1919) there emerged two main avenues of investigation in the physics of cosmic rays (CR): 1) nuclear - elucidation of the origin of elementary particles and nuclear interactions; and 2) astrophysical (space physics) - solution of the problem related to the origin and variations (changes in intensity) of CR. ... Besides, the CR flux in interplanetary space is, strictly speaking, not isotropic. ...

... Our tours this year include: Yuri Gagarin Cosmonaut Training Center at Star City, Bauman Moscow State Technical University Orevo Laboratory, Russian Mission Control Center (TsUP), Rocket and Space Corporation Energia, Lavochkin Scientific and Industrial Association, Energomash Scientific and Industrial Association, Scientific and Industrial Association "Zvezda", Khrunichev State Research & Production Space Center, Monino Air Force Museum. Bauman Moscow State Technical University . Moscow) . ...

... Geomagnetic Indices . ... Minute Values of Geomagnetic Field Components . ... Hourly Values of Geomagnetic Field Components . ... The Earth's magnetic field is described by seven parameters.To measure the Earth's magnetism in any place, we must measure the direction and intensity of the field. ... K indices isolate solar particle effects on the earth's magnetic field; over a 3-hour period, they classify into disturbance levels the range of variation of the more unsettled horizontal field component. ...

Annu. ... Key Words stellar energy production, Nobel Prize, supernova, binary pairs s Abstract Astrophysics has been an important part of my personal and scientific life three times. ... Gamov suggested to one of his graduate students, Charles Critchfield, that he actually calculate the proton-proton reaction. ... In stars, the proton-proton reaction is usually followed by a chain of reactions with the end result of producing 4He. ... In 1938, they suggested energy production in stars. ...

... Multiexposition 34 images Sun 1/1000 sec f/22 and 1 image background. ... It shows position of the Sun on the sky in the same time of a day during one year. Analemma - a trace of the annual movement of the Sun on the sky - is well known among experts of sun-dials and old Earth's globes as a diagram of change of seasons and an equation of time. ... Previously, the position of the Sun on the sky was calculated with computer as well as optimal moments of time for taking each of the exposures. ...