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Video Telescope Review 80 Ed

$Orion Grab-n-Go 80mm Triplet Refractor Telescope$

Orion Grab-n-Go 80mm Triplet Refractor Telescope

Take a high-resolution tour of the night sky through our new 80mm triplet ED refractor with this readily transportable Grab-n-Go package. For most of us, the best and darkest skies for visual stargazing are not right outside the back door, but are found in sometimes distant remote viewing locations away from city lights and skyglow. To make journeys to such dark-sky sites as convenient as possible we've coupled our new ED80T CF triplet refractor with the sturdy VersaGo II altazimuth mount for no-nonsense ease-of-use and exceptional portability. With the included 2" 26mm Q70 eyepiece and EZ Finder II reflex sight, you have a complete setup ready for extensive deep-sky viewing action. Amazingly, the entire set weighs a paltry 20 lbs. for easy transport to your favorite dark skies. The Grab-n-Go 80mm Triplet is also a great setup for a quick trip into the backyard when you want to observe, but would rather not drag out a heavier telescope. The lightweight ED80T CF features an 80mm triplet objective utilizing FPL-53 extra-low dispersion (or "ED") glass for optimal visual performance virtually free of chromatic aberration. Views through the 80mm triplet will be true-color and exhibit superior resolution and sharpness.
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Orion Telescopes

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$Orion Sirius ED80 EQ-G Computerized GoTo Refractor Telescope$

Orion Sirius ED80 EQ-G Computerized GoTo Refractor Telescope

As numerous customers have shown, the ED80's short focal length and superb apochromatic optics make it a great telescope for astrophotography. And now we've coupled it with a state-of-the-art equatorial GoTo mount that provides the stability and precision control needed to capture beautiful deep-sky images. The ED80 sports a multi-coated 80mm objective lens doublet of 600mm focal length (f/7.5). One lens element is crafted from extra-low dispersion (ED) FPL-53 optical glass from Japan. This high-grade glass greatly reduces the chromatic aberration that causes color fringing around bright objects in standard achromats. The 2" Crayford-style focuser accepts both 2" and 1.25" accessories. Astrophotography and observing are made effortless by the Sirius EQ-G GoTo mount. The included GoTo hand controller contains a database of 42,900 objects.
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Orion Telescopes

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400 Years of Astronomical Telescopes: A Review of History, Science and Technology

400 Years of Astronomical Telescopes: A Review of History, Science and Technology

Four hundred years ago, on 25 September 1608, the lens maker Hans Lipperhey from Middelburg in the Netherlands traveled to The Hague to apply for a patent regarding his invention of the "spyglass". The Commander in Chief of the Dutch armed forces, Prince Maurice of Nassau, was quite impressed. However, since the instrument could be easily copied, Lipperhey was not granted the patent. Nevertheless, within a year Galileo Galilei aimed a telescope that he had built based on the principals of Lipperhey's device on the skies, forever changing the way astronomy was done. To celebrate the invention of the telescope and the resulting developments, Leiden Observatory, in cooperation with ESTEC, organized an international meeting on "400 Years of Astronomical Telescopes". The meeting took place from 29 September - 2 October 2008 at the ESTEC conference centre. This book presents the highlights of this meeting under the following categories: History of Optical Telescopes, History of Non-Optical Telescopes, Miscellaneous Aspects and Projects, Fundamental Telescope Technologies, Political and Sociological Aspects, Perspectives for Future Telescopes. The topical reviews have been written by internationally recognized leaders of the field. This book is intended as a first reference to many technical, historical and social aspects concerning astronomical telescopes. It is equally well suited to professional astronomers as to the interested public.
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Amazon Marketplace

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Video Astronomy (Sky & Telescope Observer's Guides), Revised Edition

Video Astronomy (Sky & Telescope Observer's Guides), Revised Edition

new book
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Amazon

store rating : 3.43

Black Holes By Space Telescope Science Institute

Black Holes By Space Telescope Science Institute

Black holes, once considered to be of purely theoretical interest, play an important role in observational astronomy and in a range of astrophysical phenomena. This volume is based on a meeting held at the Space Telescope Science Institute, which explored the many aspects of black hole astrophysics. Written by world experts in areas of stellar-mass, intermediate-mass, and supermassive black holes, these review papers provide an up-to-date overview of developments in this field.Topics discussed range from black hole entropy and the fate of information to supermassive black holes at the centers of galaxies, and from the possibility of producing black holes in collider experiments to the measurements of black hole spins. This is an invaluable resource for researchers currently working in the field, and for graduate students interested in this active and growing area of research.This series offers collections of review papers from major scientific meetings of the Space Telescope Science Institute.
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Video Astronomy (Sky & Telescope Observer's Guides), Revised Edition

Video Astronomy (Sky & Telescope Observer's Guides), Revised Edition

new book
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Amazon Marketplace

store rating : 2.77

Real Astronomy With Small Telescopes: Step-by-step Acti

Real Astronomy With Small Telescopes: Step-by-step Acti

This book is about using an 80mm refractor / 90mm Maksutov (such as a Helios 80 or Meade ETX90) as more than a "quick look" instrument, but rather something capable of use as an introduction to scientific observations. Emphasis is on measurement and discovery activities rather than on casual observing. There are two objectives to these activities: to re-enact the process of discovery and to provide amateur observers with the knowledge and skill that will help them make genuine contributions to the field of astronomy.It is often said that users of small telescopes can conduct worthwhile scientific work, but â??how' is seldom explained except in the context of observations carried out by the most advanced amateur astronomers. This book provides the necessary introduction - derived from the author's many year of experience in teaching the subject - that will be the starting point for serious work.Users will find many activities and projects suitable for an 80mm refractor or 90mm reflector or Maksutov that have n
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Deep-Sky Wonders: A Tour of the Universe with Sky and Telescope's Sue French

Deep-Sky Wonders: A Tour of the Universe with Sky and Telescope's Sue French

A new collection from Sky and Telescope's popular columnist. Sue French's elegant, informative monthly columns in Sky and Telescope magazine have won this astronomy writer a passionate following among astronomy enthusiasts. In 2005, French published 60 of these columns in Celestial Sampler, a book that garnered rave reviews and earned bestseller sales. Deep-Sky Wonders is a welcome expansion of that winning format. A new collection of the best of French's "Deep-Sky Wonders" columns, the book is organized by season and subdivided into months, offering readers a total of 100 in-depth tours of the deep sky with enduring relevance. The book includes: Full-color photographs and detailed sketches of each tour Descriptions of double and variable stars, star clusters, nebulae, galaxies and exotics Historical and scientific background of particular interest A tabular listing of the deep-sky sights Color charts showing the position of each target in the night sky An index to all of the deep-sky objects covered. Deep-Sky Wonders also features a variety of challenging objects that encourage observers to test the limits of their equipment and skills. Fragments of poetry and prose enliven the text, while each tour illuminates little-known seasonal wonders that lie off the beaten path. From a January journey down the celestial river Eridanus to an autumnal visit to the den of Vulpecula, the Little Fox, French brings the wonders of the sky to life. Suitable for beginning and intermediate small-scope astronomers as well as large-scope viewers and astrophotographers, this book will be greeted enthusiastically by all Sky and Telescope readers, especially French's many fans. It is also an outstanding introduction to deep-sky viewing for novice observers.
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Amazon

store rating : 3.43

The Complete Guide To Digital Video By Ed Cooper, Ed...

The Complete Guide To Digital Video By Ed Cooper, Ed...

A comprehensive reference on the world of digital video provides an accessible but informative overview of available digital video software and hardware, covering every aspect of creating and editing digital video and furnishing insider suggestions on how to make, edit, publish, and distribute video material across a variety of media. Original. (Beginner)
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Only $9.95

Deep-sky Video Astronomy By Steve Massey

Deep-sky Video Astronomy By Steve Massey

Deep-Sky Video Astronomy is a concise guide to using modern integrating video cameras for deep-sky viewing and imaging with the kinds of modest telescopes available commercially to amateur astronomers. It includes an introduction and a brief history of the technology, camera types, etc. The authors then examine the pros and cons of this unrefrigerated yet highly efficient technology, which is already beginning to compete with expensive astronomical cooled-chip CCD cameras in quality and ease of use.There is a thorough examination of accessories used to achieve particular results. Examples are focal reducers, Barlow lenses, and optical filters. However, the focus is mostly on the practical side of creating beautiful and detailed astronomical portraits using image-stacking software, enhancement tools like PhotoShop, and creating color images with a black-and-white camera.Practical step-by-step examples supported by tried and trusted tips show how to achieve the best possible deep-sky video portrait!
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eBay

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Video Astronomy Book, Revised Edition

Video Astronomy Book, Revised Edition

This book is a thorough guide to capturing images of the night sky on video. The authors, all experienced backyard skygazers and astronomical imagers, examine video technology past and present and demonstrate its many applications to astronomy. They explain how to use ordinary camcorders, webcams, and digital video cameras alone or coupled to telescopes to record images of the moon and planets, deep-sky objects, and fleeting celestial events such as meteor showers, occultations, and eclipses.
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Orion Telescopes

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Thermal Design and Thermal Behaviour of Radio Telescopes and their Enclosures (Astrophysics and Space Science Library)

Thermal Design and Thermal Behaviour of Radio Telescopes and their Enclosures (Astrophysics and Space Science Library)

Radio telescopes as well as communication antennas operate under the influence of gravity, temperature and wind. Among those, temperature influences may degrade the performance of a radio telescope through transient changes of the focus, pointing, path length and sensitivity, often in an unpredictable way. Thermal Design and Thermal Behaviour of Radio Telescopes and their Enclosures reviews the design and construction principles of radio telescopes in view of thermal aspects and heat transfer with the variable thermal environment; it explains supporting thermal model calculations and the application and efficiency of thermal protection and temperature control; it presents many measurements illustrating the thermal behaviour of telescopes in the environment of their observatory sites. The book benefits scientists and radio/communication engineers, telescope designers and construction firms as well as telescope operators, observatory staff, but also the observing astronomer who is directly confronted with the thermal behaviour of a telescope.
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Amazon Marketplace

store rating : 2.77

Real Astronomy with Small Telescopes: Step-by-Step Activities for Discovery (Patrick Moore's Practical Astronomy Series)

Real Astronomy with Small Telescopes: Step-by-Step Activities for Discovery (Patrick Moore's Practical Astronomy Series)

This book demonstrates the use of an 80mm refractor and shows how it can be used as a real scientific instrument. The author is an experienced small telescope user and an astronomy educator, and he provides step-by-step instructions for numerous scientific activities. Users will find many activities and projects suitable for an 80mm refractor or 90mm reflector or Maksutov that have not been published elsewhere. Emphasis is on measurement and discovery activities rather than on casual observing. This book will provide amateur observers with the knowledge and skill that will help them make genuine contributions to the field of astronomy.
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Amazon

store rating : 3.43

Doing Recent History: On Privacy, Copyright, Video Games, Institutional Review Boards, Activist Scholarship, and History T (Since 1970: Histories of Contemporary America)

Doing Recent History: On Privacy, Copyright, Video Games, Institutional Review Boards, Activist Scholarship, and History T (Since 1970: Histories of Contemporary America)

Recent history—the very phrase seems like an oxymoron. Yet historians have been writing accounts of the recent past since printed history acquired a modern audience, and in the last several years interest in recent topics has grown exponentially. With subjects as diverse as Walmart and disco, and personalities as disparate as Chavez and Schlafly, books about the history of our own time have become arguably the most exciting and talked-about part of the discipline.Despite this rich tradition and growing popularity, historians have engaged in little discussion about the specific methodological, political, and ethical issues related to writing about the recent past. The twelve essays in this collection explore the challenges of writing histories of recent events where visibility is inherently imperfect, hindsight and perspective are lacking, and historiography is underdeveloped.Those who write about events that have taken place since 1970 encounter exciting challenges that are both familiar and foreign to scholars of a more distant past, including suspicions that their research is not historical enough, negotiation with living witnesses who have a very strong stake in their own representation, and the task of working with new electronic sources. Contributors to this collection consider a wide range of these challenges. They question how sources like television and video games can be better utilized in historical research, explore the role and regulation of doing oral histories, consider the ethics of writing about living subjects, discuss how historians can best navigate questions of privacy and copyright law, and imagine the possibilities that new technologies offer for creating transnational and translingual research opportunities. Doing Recent History offers guidance and insight to any researcher considering tackling the not-so-distant past.
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Amazon

store rating : 3.43

Thermal Design And Thermal Behaviour Of Radio Telescopes And Their Enclosures...

Thermal Design And Thermal Behaviour Of Radio Telescopes And Their Enclosures...

Radio telescopes as well as communication antennas operate under the influence of gravity, temperature and wind. Among those, temperature influences may degrade the performance of a radio telescope through transient changes of the focus, pointing, path length and sensitivity, often in an unpredictable way. Thermal design and Thermal Behaviour of Radio Telescopes and their Enclosures reviews the design and construction principles of radio telescopes in view of thermal aspects and heat transfer with the variable thermal environment; it explains supporting thermal model calculations and the application and efficiency of thermal protection and temperature control; it presents many measurements illustrating the thermal behaviour of telescopes in the environment of their observatory sites.This book benefits scientists and radio/communication engineers, telescope designers and construction firms as well as telescope operators, observatory staff, but also the observing astronomer who is directly confronted wi
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Barska Optics Magnus 65ED (65 x 65mm) Telescope

Barska Optics Magnus 65ED (65 x 65mm) Telescope

Optical Diameter: 65 mm, Focal Length: 390 mm, Max Useful Magnification: 65 x more

$349.99 - $486.00
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Barska Optics Magnus 80ED (AE11120) (93.33 x 80mm) Telescope

Barska Optics Magnus 80ED (AE11120) (93.33 x 80mm) Telescope

Optical Diameter: 80 mm, Focal Length: 560 mm, Max Useful Magnification: 93.33 x more

$449.99 - $604.46
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Educational Insights 5273 (80 x 50mm) Telescope

Educational Insights 5273 (80 x 50mm) Telescope

Optical Design: Refractor, Optical Diameter: 50 mm, Max Useful Magnification: 80 x more

$53.67 - $80.25
from 8 stores

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Orion Telescopes & Binoculars 80 ED Apo

Orion Telescopes & Binoculars 80 ED Apo

Orion Telescopes & Binoculars 80 ED Apo rating

Optical Design: Refractor, Optical Diameter: 80 mm, Focal Length: 600 mm, Max Useful Magnification: 189 x, Mount Type: Unmounted more

$499.99 - $499.99
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Orion Telescopes & Binoculars Sirius 180/2700 EQ

Orion Telescopes & Binoculars Sirius 180/2700 EQ

Optical Design: Catadioptrics, Optical Diameter: 235 mm, Finderscope type: Optical, Focal Length: 2350 mm, Mount Type: Equatorial more

$1499.99 - $2349.99
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