Download ebook David Ratledge - Practical Astronomy: Observing the Caldwell Objects in EPUB
9781852336288 1852336285 Background A new collection of deep sky targets for the modern amateur astronomer was long overdue. The traditional catalogue of deep sky objects, i.e. that produced by Messier over 200 years ago, has become a victim of its own success. Those objects have now become far too well known, over-viewed, over-imaged and over-published. More importantly they have often resulted in more interesting objects being totally overlooked. The logic behind the compilation of Messier's objects was nothing more profound than that they might be confused for a comet There must be a better way to choose the best deep sky objects for the modern era. It was time for a fresh approach. Enter Patrick Moore. As an active observer for over half a century and the last 40 years of which, as presenter ofBBC TV's Sky at Night, he has travelled all over the World and never missed the opportunity to observe the skies. This has given him an in-depth, practical knowledge of deep sky objects in both northern and southern hemispheres., The objects listed in the Caldwell Catalogue supplement Messier's famous catalogue of 110 non-stellar objects, and they include some of the most fascinating objects for amateur astronomers. This comprehensive guide to the Caldwell objects has been produced specially for observers. Each object is conveniently on a double-page spread (which can even be photocopied for field use). There is a photographic image of every object and full technical data including position (with the major Star Atlas chart numbers) and NGC number. It also includes a finder map showing TelradTM circles, a star-hopping guide, a visual description of what the object looks like through amateur telescopes, and a physical description of the object itself. There is a fold-out map showing the location of all the Caldwell objects in the sky. Every practical amateur astronomer will find this an essential guide to observing the Caldwell objects.
9781852336288 1852336285 Background A new collection of deep sky targets for the modern amateur astronomer was long overdue. The traditional catalogue of deep sky objects, i.e. that produced by Messier over 200 years ago, has become a victim of its own success. Those objects have now become far too well known, over-viewed, over-imaged and over-published. More importantly they have often resulted in more interesting objects being totally overlooked. The logic behind the compilation of Messier's objects was nothing more profound than that they might be confused for a comet There must be a better way to choose the best deep sky objects for the modern era. It was time for a fresh approach. Enter Patrick Moore. As an active observer for over half a century and the last 40 years of which, as presenter ofBBC TV's Sky at Night, he has travelled all over the World and never missed the opportunity to observe the skies. This has given him an in-depth, practical knowledge of deep sky objects in both northern and southern hemispheres., The objects listed in the Caldwell Catalogue supplement Messier's famous catalogue of 110 non-stellar objects, and they include some of the most fascinating objects for amateur astronomers. This comprehensive guide to the Caldwell objects has been produced specially for observers. Each object is conveniently on a double-page spread (which can even be photocopied for field use). There is a photographic image of every object and full technical data including position (with the major Star Atlas chart numbers) and NGC number. It also includes a finder map showing TelradTM circles, a star-hopping guide, a visual description of what the object looks like through amateur telescopes, and a physical description of the object itself. There is a fold-out map showing the location of all the Caldwell objects in the sky. Every practical amateur astronomer will find this an essential guide to observing the Caldwell objects.