In the 1980's, on the sidewalks of San Francisco, amateur astronomer John Dobson began showing throngs of people how to build and use large aperture scopes, often from scraps. The Dobsonian,'Dobs,' are now the best-selling large telescopes in the world. There are a great variety of different Dob styles, ranging from elaborate and decorative creations to simple mass market designs, and new models appear all the time. In this title, Neil English presents the ultimate guide to buying and using a commercial Dobsonian for recreational astronomy. He provides in-depth accounts of the various models (plus accessories) on the market - both economy and premium - together with describing the wealth of innovations that amateurs have made to their Dobs to optimize their performance in the field. Even after thirty years of innovation, the Dobsonian Revolution shows no signs of abating. Find out where the future lies for these large aperture 'scopes and the exciting avenues John Dobson's vision will take us down in the coming years.

Autorentext
Experienced observer and writer on astronomy, Neil English has enjoyed looking through and writing about Dobsonian telescopes of all vintages. A Fellow of the Royal Astronomical Society, Neil has been a regular contributor to Britain's Astronomy Now for over 15 years. His work has also appeared in Astronomy magazine and New Scientist. He holds a PhD. in biochemistry and a BSc in physics and astronomy. English is the also the author of the sister Springer title, Choosing and Using a Refracting Telescope. He observes from the dark skies of rural, central Scotland, where he lives with his wife and two young sons.

Zusammenfassung
In the 1960's, American amateur astronomer, John Dobson, designed a revolutionary kind of astronomical telescope featuring a lightweight large-aperture reflecting system on a simple mounting, using the then-revolutionary material called teflon. The design combines simplicity and portability with large-aperture prowess. Thirty years later Dobsonians remain supreme for visually observing faint deep-sky objects and are one of the best-selling large telescopes in the USA and Europe. This popularity is reflected in the recent increase of companies now heavily marketing Dobsonians, in particular, Meade (the "Lightbridge" range), Orion USA (XT Intelliscope series), and Skywatcher (Skyliner and Flextube models). This book is the ultimate guide to buying and using commercial Dobsonians, both 'Econo' and 'Primo' models, with in-depth accounts for the various models (plus accessories) on the market and descriptions of the many innovations that amateurs have made to optimize their telescopes' performance.

Inhalt

Preface.- Part I: The Dobsonian Telescope.- Chapter 1: John Dobson, The Man and His Legacy.- Chapter 2: Know Thy Dob!.- Chapter 3: The Mini-Dobs.- Chapter 4: Getting Serious.- Chapter 5: The Planetary Dobs.- Chapter 6: The 12-inch to 16-inch Dobs.- Chapter 7: Different Strokes.- Chapter 8: Here Be Monsters!.- Part II: Using Your Dobsonian.- Chapter 9: Accessorizing Your Dob.- Chapter 10: Adjusting, Maintaining, and Testing Your Dob.- Chapter 11: Sketching and Imaging with Your Dob.- Chapter 12: Where Next, Columbus?.- Appendix A: References.- Appendix B: Useful Formula.- Appendix C: Glossary.- Index.