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Measure Solar System Objects And Their Movements For Yourself

Author : John D. Clark
ISBN : 0387895612
Genre : Science
File Size : 41.32 MB
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Instead of taking somebody's word for it about the basic size and distance statistics for the solar system, this book shows amateur astronomers how to measure these things for themselves. This is an enriching experience for any amateur astronomer - to understand and personally measure some fundamental astronomical quantities and distances. A basic knowledge of geometry is required, but it is amazing how simple the geometry can be. Readers are led through the geometry as gently as possible - and in a light-hearted way - presuming that most non-academics will have half-forgotten most of their mathematics. The practical astronomical equipment recommended is no more than a typical commercially-made amateur telescope and a camera of some sort - these days a webcam works very well. Apart from that all the reader will need is access to a computer, the know-how to download free software, and an enthusiasm to expand his knowledge of the basis of scientific astronomy.
Category: Science

Viewing And Imaging The Solar System

Author : Jane Clark
ISBN : 9781461451792
Genre : Science
File Size : 85.90 MB
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Viewing and Imaging the Solar System: A Guide for Amateur Astronomers is for those who want to develop their ability to observe and image Solar System objects, including the planets and moons, the Sun, and comets and asteroids. They might be beginners, or they may have already owned and used an astronomical telescope for a year or more. Newcomers are almost always wowed by sights such as the rings of Saturn and the moons of Jupiter, but have little idea how to find these objects for themselves (with the obvious exceptions of the Sun and Moon). They also need guidance about what equipment, besides a telescope, they will need. This book is written by an expert on the Solar System, who has had a lot of experience with outreach programs, which teach others how to make the most of relatively simple and low-cost equipment. That does not mean that this book is not for serious amateurs. On the contrary, it is designed to show amateur astronomers, in a relatively light-hearted—and math-free way—how to become serious.
Category: Science

Phillip S Astronomy Encyclopedia A Comprehensive And Authoritative A Z Guide To The Universe Sir Patrick Moore 2002

Author : Octopus Publishing Group
Genre : Science
File Size : 87.10 MB
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‘Mc’ is treated as if it were spelled ‘Mac’, and certain shortened forms as if spelled out in full (e.g. ‘St’ is treated as ‘Saint’). Entries that have more than one word in the heading are alphabetized as if there were no space between the words. Entries that share the same main heading are in the order of people, places and things. Entries beginning with numerals are treated as if the numerals were spelled out (e.g. 3C follows three-body problem and precedes 3C 273). An exception is made for HI region and HII region, which appear together immediately after Hirayama family. Biographies are alphabetized by surname, with first names following the comma. (Forenames are placed in parentheses if the one by which a person is commonly known is not the first.) Certain lunar and planetary features appear under the main element of names (e.g. Imbrium, Mare rather than Mare Imbrium). Cross-references SMALL CAPITALS in an article indicate a separate entry that defines and explains the word or subject capitalized. ‘See also’ at the end of an article directs the reader to entries that contain additional relevant information. Measurements Measurements are given in metric (usually SI) units, with an imperial conversion (to an appropriate accuracy) following in parentheses where appropriate. In historical contexts this convention is reversed so that, for example, the diameter of an early telescope is given first in inches. Densities, given in grams per cubic centimetre, are not converted, and neither are kilograms or tonnes. Large astronomical distances are usually given in light-years, but parsecs are sometimes used in a cosmological context. Particularly in tables, large numbers may be given in exponential form. Thus 103 is a thousand, 2 106 is two million, and so on. ‘Billion’ always means a thousand million, or 109. As is customary in astronomy, dates are expressed in the order year, month, day. Details of units of measurement, conversion factors and the principal abbreviations used in the book will be found in the tables on this page. Stellar data In almost all cases, data for stars are taken from the HIPPARCOS CATALOGUE. The very few exceptions are for instances where the catalogue contains an error of which the editors have been aware. In tables of constellations and elsewhere, the combined magnitude is given for double stars, and the average magnitude for variable stars. Star Maps pages 447–55 Acknowledgements page 456 FRONTMATTER IMAGES Endpapers: Andromeda Galaxy The largest member of the Local Group, this galaxy is the farthest object that can be seen with the naked eye. Half-title: Crab Nebula This nebula is a remnant of a supernova that exploded in the constellation of Taurus in 1054. Opposite title: M83 Blue young stars and red HII emission nebulae clearly mark out regions of star formation in this face-on spiral galaxy in Hydra. Opposite Foreword: NGC 4945 This classic disk galaxy is at a distance of 13 million l.y. Its stars are mainly confined to a flat, thin, circular region surrounding the nucleus. Opposite page 1: Earth This photograph was obtained by the Apollo 17 crew en route to the Moon in 1972 December. SYMBOLS FOR UNITS, CONSTANTS AND QUANTITIES a semimajor axis Å angstrom unit AU astronomical unit c speed of light d distance e eccentricity E energy eV electron-volt f following F focal length, force g acceleration due to gravity G gauss G gravitational constant h hour h Planck constant Ho Hubble constant Hz hertz i inclination IC Index Catalogue Jy jansky k Boltzmann constant K degrees kelvin L luminosity Ln Lagrangian points (n = 1 to 5) l.y. light-year m metre, minute m apparent magnitude, mass mbol bolometric magnitude mpg photographic magnitude mpv photovisual magnitude mv visual magnitude M absolute magnitude, mass (stellar) N newton p preceding P orbital period pc parsec q perihelion distance qo deceleration parameter Q aphelion distance r radius, distance R Roche limit s second t time T temperature (absolute), epoch (time of perihelion passage) Teff effective temperature v velocity W watt y year z redshift α constant of aberration, right ascension δ declination λ wavelength μ proper motion ν frequency π parallax ω longitude of perihelion Ω observed/critical density ratio, longitude of ascending node ° degree [1] arcminute arcsecond Distances 1 nm = 10 Å 1 inch = 25.4 mm 1 mm = 0.03937 inch 1ft = 0.3048 m 1 m = 39.37 inches = 3.2808 ft 1 mile = 1.6093 km 1 km = 0.6214 mile 1 km/s = 2237 mile/h 1 pc = 3.0857 × 1013 km = 3.2616 l.y. = 206,265 AU 1 l.y. = 9.4607 × 1012 km = 0.3066 pc = 63,240 AU Temperatures (to the nearest degree) °C to °F : 1.8, 32 °C to K : 273 °F to °C : 32, 1.8 °F to K : 1.8, 255 K to °C : 273 K to °F : 1.8, 460 Note: To convert temperature differences, rather than points on the temperature scale, ignore the additive or subtractive figure and just multiply or divide.
Category: Science

Atlas Of The Universe Sir Patrick Moore 2005

Author : Phillip's a division of Octopus Publishing Group, Ltd
Genre : Science
File Size : 77.72 MB
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Atlas of the Universe, Phillip's a division of Octopus Publishing Group, Ltd Science / Astronomy - Sir Patrick Moore, 2005
Category: Science


Author : Patrick Moore
ISBN : UOM:39015060915058
Genre : Astronomy
File Size : 78.97 MB
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Category: Astronomy

Unfolding Our Universe

Author : Iain Nicolson
ISBN : 0521592704
Genre : Nature
File Size : 73.76 MB
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This beginner's guide to the science of astronomy also explores the current work of professionals in the field. 120 color plates. 108 line diagrams.
Category: Nature

Astronomy Now

Author :
ISBN : UOM:39015049399846
Genre : Astronomy
File Size : 77.25 MB
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Category: Astronomy

Die Sonne Stern Unserer Erde

Author : Kenneth R. Lang
ISBN : 9783662066829
Genre : Science
File Size : 52.71 MB
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Eine faszinierende Entdeckungsreise zur Sonne und ihren unsichtbaren Welten. Für Fachkundige ebenso spannend zu lesen wie für Astronomie-Interessierte, führt das Buch verständlich in die Physik der Sonne ein und zeigt eindrucksvoll die Bedeutung des Sonnenlichts für das Leben auf der Erde. Gestützt auf neueste Forschungsergebnisse aus Radioteleskop- und Satellitenbeobachtungen beschreibt Kenneth Lang die gewaltigen atomenergetischen Prozesse der Sonne, den von ihr ausgehenden Neutrinofluß, ihre seismischen Aktivitäten, ihre Magnetfelder und Sonnenflecken, die Sonnenausbrüche und Protuberanzen, den Sonnenwind und den Einfluß der Sonne auf unser Klima und Wetter. Das Buch ist mit einer Fülle hervorragender Abbildungen ausgestattet, u.a. mit Fotomaterial der NASA, das hier zum ersten Mal veröffentlicht wird.
Category: Science