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Commercially-made astronomical telescopes are better and less expensive than ever before, and their optical and mechanical performance can be superb. When a good-quality telescope fails to perform as well as it might, the reason is quite probably that it needs a little care and attention! Here is a complete guide for anyone who wants to understand more than just the basics of astronomical telescopes and accessories, and how to maintain them in the peak of condition. The latest on safely adjusting, cleaning, and maintaining your equipment is combined with thoroughly updated methods from the old masters. Here, too, are details of choosing new and used optics and accessories, along with enhancements you can make to extend their versatility and useful lifetime. This book is for you. Really. Looking after an astronomical telescope isn’t only for the experts - although there are some things that only an expert should attempt - and every serious amateur astronomer will find invaluable information here, gleaned from Barlow Pepin's many years’ experience working with optical instruments.

Telescopes --- Optical instruments. --- Optics --- Physical instruments --- Astronomical telescopes --- Optical telescopes --- Telescope --- Astronomical instruments --- Optical instruments --- Instruments --- Astronomy. --- Popular Science in Astronomy. --- Astronomy, Observations and Techniques. --- Observations, Astronomical. --- Astronomy—Observations. --- Astronomical observations --- Observations, Astronomical

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Optoelectronic devices --- Photonics --- New optics --- Optics --- Photo electric devices --- Photo electronic devices --- Photoelectronic devices --- Electronic apparatus and appliances --- Optical instruments --- Electrooptical devices --- Integrated optics --- Photonic devices --- Photonic instruments

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"Miroir noir ! Bel oxymoron..." Ainsi débute cette remarquable contribution à l'histoire de la culture visuelle occidentale. Dans cette première étude " panoramique " d'un instrument d'optique injustement oublié, Arnaud Maillet recadre notre compréhension historique de l'expérience visuelle et les diverses significations possibles du miroir noir en mettant cet objet ambigu en relation avec les notions de transparence, d'opacité et d'imagination. Si ce petit instrument d'optique, longtemps confondu avec d'autres, connut une popularité avérée à la fin du XVIIIe siècle dans l'Europe des amateurs de pittoresque, il fut rejeté au XIXe siècle puis totalement oublié (ou presque) de nos jours. Objet scientifique pour les savants, magique pour les occultistes, cultuel pour certaines civilisations, objet de recherches esthétiques pour les peintres et expérimentales pour les artistes contemporains, ce miroir est également indissociable du désir, de la mélancolie et de la mort. Il s'agit alors de comprendre que ces divers aspects du miroir noir bien souvent ne s'opposent pas, mais constituent plutôt l'unité homogène, cohérente et fondamentale de tout un pan de notre culture s'articulant autour de l'équation clair/obscur. De Claude Lorrain à Christian Boltanski en passant par Alberti, de Piles, Gilpin, Coleridge, Ruskin, Matisse ou Richter, Le miroir noir nous emmène de ses origines magiques et occultes jusque ses avatars actuels à travers une série de pratiques picturales et technologiques telles que la photographie, le cinéma et l'art contemporain. Traverser ce miroir sans craindre de s'abîmer dans le côté obscur nous confronte à une évidence : c'est dans l'aveuglement que se constitue le regard.

Mirrors in art --- Aesthetics --- Optical instruments --- Optical illusions --- Witchcraft --- Miroirs dans l'art --- Esthétique --- Optique --- Illusions d'optique --- Sorcellerie --- Instruments --- Clair-obscur --- Effet-miroir --- Technique de représentation --- Richter, Gerhard --- Esthétique --- Effet miroir --- Art, Modern --- Visual perception --- CDL --- 7.01 --- Optics, Psychological --- Vision --- Perception --- Visual discrimination --- Modern art --- Nieuwe Ploeg (Group of artists) --- Themes, motives --- Psychological aspects

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Italy --- -Mirrors --- -Mirrors, Etruscan --- Catalogs --- Antiquities --- Mirrors --- Mirrors, Etruscan --- Miroirs --- Miroirs étrusques --- Catalogues --- Italie --- Antiquités --- Catalogs. --- Archaeological museums and collections --- -739.51209375 --- 708.1 --- Etruscan mirrors --- Aberration, Chromatic and spherical --- Looking-glasses --- Furniture --- Optical instruments --- -Catalogs --- Art metalwork Bronze Etruria --- Arts Museums North America --- Italy - Antiquities - Catalogs --- Mirrors - - Catalogs - United States --- -Mirrors, Etruscan - Catalogs --- Mirrors, Etruscan - United States - Catalogs. --- Archaeological museums and collections - United States - Catalogs. --- -Antiquities

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How deep we can see inside Nature's smallest secrets? Will it be possible some day in the near future to investigate living structures at atomic level? This area of study is very interdisciplinary, since it applies the principles and the techniques of biology, physics, chemistry, mathematics, and engineering to elucidate the structures of biological macromolecules, of supramolecular structures, organelles, and cells. This book offers updated information on how much information we are able to obtain in the exploration of the inner details of biological specimens in their native structure and composition. The book deals with the implementation of laser beam and stage scanning systems incorporating confocal optics or multiphoton microscopy; the advent of new electro-optical detectors with great sensitivity, linearity, and dynamic range; the possibility of 2D fast image enhancement, reconstruction, restoration, analysis and 3D display, and the application of luminescence techniques (FLIMT, FRET combined with the use of quantum dots), which gives the possibility to investigate the chemical and molecular spatio-temporal organization of life processes; Electron Microscopy and Scanning Force Microscopy (SFM), are also presented, which has opened completely new perspectives for analyzing the surface topography of biological matter in its aqueous environment at a resolution comparable to that achieved by EM.

Microscopy --- Microscopes --- Microscopie --- Congresses. --- Congrès --- Cellular structures --Congresses. --- Microscopes -- Congresses. --- Molecular structure -- Congresses. --- Molecular structure --- Diagnostic Imaging --- Optics and Photonics --- Chemical Phenomena --- Publication Formats --- Cells --- Investigative Techniques --- Biochemical Phenomena --- Physicochemical Phenomena --- Phenomena and Processes --- Physics --- Anatomy --- Analytical, Diagnostic and Therapeutic Techniques and Equipment --- Diagnostic Techniques and Procedures --- Publication Characteristics --- Natural Science Disciplines --- Diagnosis --- Disciplines and Occupations --- Molecular Structure --- Cellular Structures --- Congresses --- Biology --- Health & Biological Sciences --- Biology - General --- Light microscopes --- Microscope and microscopy --- Optical microscopes --- Analysis, Microscopic --- Light microscopy --- Micrographic analysis --- Microscopic analysis --- Optical microscopy --- Life sciences. --- Cell biology. --- Bioinformatics. --- Computational biology. --- Microscopy. --- Physical measurements. --- Measurement. --- Life Sciences. --- Life Sciences, general. --- Cell Biology. --- Computer Appl. in Life Sciences. --- Biological Microscopy. --- Measurement Science and Instrumentation. --- Optical instruments --- Optics --- Cytology. --- Data processing. --- Cell biology --- Cellular biology --- Cytologists --- Biosciences --- Sciences, Life --- Science --- Bioinformatics . --- Computational biology . --- Measurement   . --- Measuring --- Mensuration --- Mathematics --- Technology --- Metrology --- Physical measurements --- Measurements, Physical --- Mathematical physics --- Measurement --- Bioinformatics --- Bio-informatics --- Biological informatics --- Information science --- Computational biology --- Systems biology --- Data processing