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Listing more than 500 sky targets, both near and far, in 187 challenges, this observing guide will test novice astronomers and advanced veterans alike. Its unique mix of Solar System and deep-sky targets will have observers hunting for the Apollo lunar landing sites, searching for satellites orbiting the outermost planets, and exploring hundreds of star clusters, nebulae, distant galaxies, and quasars. Each target object is accompanied by a rating indicating how difficult the object is to find, an in-depth visual description, an illustration showing how the object realistically looks, and a detailed finder chart to help you find each challenge quickly and effectively. The guide introduces objects often overlooked in other observing guides and features targets visible in a variety of conditions, from the inner city to the dark countryside. Challenges are provided for the naked eye, through binoculars and the largest backyard telescopes.

Astronomy --- Astronomical instruments --- Instruments, Astronomical --- Optical instruments --- Physical instruments --- Scientific apparatus and instruments --- Space optics --- Instruments

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Erected at Melbourne Observatory in 1869, the telescope was the second largest in the world, designed to explore the nature of the nebulae in the southern skies. Richard Gillespie, head of the History and Technology department at the Melbourne museum has written an entertaining account of the telescope's extraordinary history and tells the story through an amazing cast of characters whose lives intersected with the telescope.

Telescopes --- Astronomers --- Astronomy --- Physical scientists --- Astronomical telescopes --- Optical telescopes --- Telescope --- Astronomical instruments --- Optical instruments --- History. --- Melbourne Observatory --- Melbourne. --- Williamstown Observatory (Williamstown, Vic.)

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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.

Dobsonian telescopes -- Automation. --- Dobsonian telescopes -- Design and construction. --- Dobsonian telescopes. --- Telescopes -- Automation. --- Dobsonian telescopes --- Astronomy & Astrophysics --- Physical Sciences & Mathematics --- Astronomical Observatories & Instruments --- Astronomy - General --- Telescopes. --- Astronomy. --- Astronomical telescopes --- Optical telescopes --- Telescope --- Physics. --- Observations, Astronomical. --- Astronomy --- Astronomy, Observations and Techniques. --- Popular Science in Astronomy. --- Observations. --- Physical sciences --- Space sciences --- Astronomical observations --- Observations, Astronomical --- Natural philosophy --- Philosophy, Natural --- Dynamics --- Astronomical instruments --- Optical instruments --- Astronomy—Observations.

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Over the last decade, stellar interferometry has developed from a specialist tool to a mainstream observing technique, attracting scientists whose research benefits from milliarcsecond angular resolution. Stellar interferometry has become part of the astronomer’s toolbox, complementing single-telescope observations by providing unique capabilities that will advance astronomical research. This carefully written book is intended to provide a solid understanding of the principles of stellar interferometry to students starting an astronomical research project in this field or to develop instruments and to astronomers using interferometry but who are not interferometrists per se. Illustrated by excellent drawings and calculated graphs the imaging process in stellar interferometers is explained starting from first principles on light propagation and diffraction wave propagation through turbulence is described in detail using Kolmogorov statistics the impact of turbulence on the imaging process is discussed both for single telescopes and for interferometers instrumental techniques like beam combination and array layout are described, and the requirements for delay lines are derived visibility measurements (modulus and phase) through turbulence are analyzed and limitations are quantified correction methods (fringe tracking and adaptive optics) are presented, discussing closed loop operation with a dual feed system. The book closes with examples of contemporary stellar interferometers and useful appendices on the Fourier transform and atmospheric transmission bands.

Astronomical instruments. --- Imaging systems in astronomy. --- Interferometry. --- Imaging systems in astronomy --- Space interferometry --- Astrometry --- Stars --- Interferometry --- Astronomical instruments --- Astrophysics --- Astronomy & Astrophysics --- Physical Sciences & Mathematics --- Astronomy - General --- Astronomical Observatories & Instruments --- Spectra --- Astronomy --- Instruments, Astronomical --- Astronomical imaging systems --- Instruments --- Physics. --- Optics. --- Electrodynamics. --- Observations, Astronomical. --- Optoelectronics. --- Plasmons (Physics). --- Astronomy, Observations and Techniques. --- Optics, Optoelectronics, Plasmonics and Optical Devices. --- Optics and Electrodynamics. --- Numerical and Computational Physics. --- Observations. --- Optical measurements --- Optical instruments --- Physical instruments --- Scientific apparatus and instruments --- Space optics --- Optics, Lasers, Photonics, Optical Devices. --- Classical Electrodynamics. --- Numerical and Computational Physics, Simulation. --- Astronomy—Observations. --- Lasers. --- Photonics. --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics --- Physics --- Light --- New optics --- Optics --- Light amplification by stimulated emission of radiation --- Masers, Optical --- Optical masers --- Light amplifiers --- Light sources --- Optoelectronic devices --- Nonlinear optics --- Optical parametric oscillators --- Astronomical observations --- Observations, Astronomical