Página InicialGruposDiscussãoMaisZeitgeist
Pesquisar O Sítio Web
Este sítio web usa «cookies» para fornecer os seus serviços, para melhorar o desempenho, para analítica e (se não estiver autenticado) para publicidade. Ao usar o LibraryThing está a reconhecer que leu e compreende os nossos Termos de Serviço e Política de Privacidade. A sua utilização deste sítio e serviços está sujeita a essas políticas e termos.

Resultados dos Livros Google

Carregue numa fotografia para ir para os Livros Google.

A carregar...

Choosing and Using a Refracting Telescope

por Neil English

MembrosCríticasPopularidadeAvaliação médiaDiscussões
15Nenhum(a)1,359,153 (5)Nenhum(a)
The refracting telescope has a long and illustrious past. Here’s what the author says about early telescopes and today’s refractors: “Four centuries ago, a hitherto obscure Italian scientist turned a home-made spyglass towards the heavens. The lenses he used were awful by modern standards, inaccurately figured and filled with the scars of their perilous journey from the furnace to the finishing workshop. Yet, despite these imperfections, they allowed him to see what no one had ever seen before – a universe far more complex and dynamic than anyone had dared imagine. But they also proved endlessly useful in the humdrum of human affairs. For the first time ever, you could spy on your neighbor from a distance, or monitor the approach of a war-mongering army, thus deciding the fate of nations. “The refractor is without doubt the prince of telescopes. Compared with all other telescopic designs, the unobstructed view of the refractor enables it to capture the sharpest, highest contrast images and the widest usable field. No other telescope design can beat it on equal terms. From a practical point of view, refractors are the most comfortable and least troublesome telescope to observe with. They require little maintenance and cool down rapidly to allow you to observe in minutes rather than hours. Because a refractor has more back focus than almost any other form of telescope, it can accept the widest range of accessories, including filters, cameras, and binoviewers.” Explore in this book what makes refractors such a good choice for amateur astronomers and how to choose the right one for you. Also get some great tips on how to use your new refractor. Get started now, seeing for yourself the dazzling and complex universe first opened to human sight more just 400 years ago.… (mais)
Nenhum(a)
A carregar...

Adira ao LibraryThing para descobrir se irá gostar deste livro.

Ainda não há conversas na Discussão sobre este livro.

Sem comentários
sem críticas | adicionar uma crítica
Tem de autenticar-se para poder editar dados do Conhecimento Comum.
Para mais ajuda veja a página de ajuda do Conhecimento Comum.
Título canónico
Informação do Conhecimento Comum em inglês. Edite para a localizar na sua língua.
Título original
Títulos alternativos
Data da publicação original
Pessoas/Personagens
Locais importantes
Acontecimentos importantes
Filmes relacionados
Epígrafe
Dedicatória
Primeiras palavras
Citações
Últimas palavras
Nota de desambiguação
Editores da Editora
Autores de citações elogiosas (normalmente na contracapa do livro)
Língua original
DDC/MDS canónico
LCC Canónico

Referências a esta obra em recursos externos.

Wikipédia em inglês

Nenhum(a)

The refracting telescope has a long and illustrious past. Here’s what the author says about early telescopes and today’s refractors: “Four centuries ago, a hitherto obscure Italian scientist turned a home-made spyglass towards the heavens. The lenses he used were awful by modern standards, inaccurately figured and filled with the scars of their perilous journey from the furnace to the finishing workshop. Yet, despite these imperfections, they allowed him to see what no one had ever seen before – a universe far more complex and dynamic than anyone had dared imagine. But they also proved endlessly useful in the humdrum of human affairs. For the first time ever, you could spy on your neighbor from a distance, or monitor the approach of a war-mongering army, thus deciding the fate of nations. “The refractor is without doubt the prince of telescopes. Compared with all other telescopic designs, the unobstructed view of the refractor enables it to capture the sharpest, highest contrast images and the widest usable field. No other telescope design can beat it on equal terms. From a practical point of view, refractors are the most comfortable and least troublesome telescope to observe with. They require little maintenance and cool down rapidly to allow you to observe in minutes rather than hours. Because a refractor has more back focus than almost any other form of telescope, it can accept the widest range of accessories, including filters, cameras, and binoviewers.” Explore in this book what makes refractors such a good choice for amateur astronomers and how to choose the right one for you. Also get some great tips on how to use your new refractor. Get started now, seeing for yourself the dazzling and complex universe first opened to human sight more just 400 years ago.

Não foram encontradas descrições de bibliotecas.

Descrição do livro
Resumo Haiku

Current Discussions

Nenhum(a)

Capas populares

Ligações Rápidas

Avaliação

Média: (5)
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5 1

É você?

Torne-se num Autor LibraryThing.

 

Acerca | Contacto | LibraryThing.com | Privacidade/Termos | Ajuda/Perguntas Frequentes | Blogue | Loja | APIs | TinyCat | Bibliotecas Legadas | Primeiros Críticos | Conhecimento Comum | 202,660,938 livros! | Barra de topo: Sempre visível