Aimed at observers with 10-inch or larger telescopes, this guide to some of the most distant, dim, and rarely observed celestial objects is supported by background information on surveys and objects lists—some familiar, such as Caldwell, and some less so.
The genesis of modern searches for observable meteoritic phenomena on the Moon is the paper by Lincoln La Paz in Popular Astronomy magazine in 1938. In it he argued that the absence of observed fashes of meteoritic impacts on the Moon might be interpreted to mean that these bodies are destroyed as luminous meteors in an extremely rarefed lunar atmosphere. The paper suggested the possibility of systematic searches for such possible lunar meteors. With these concepts in mind, I was surprised to note a transient moving bright speck on the Moon on July 10, 1941. It appeared to behave very much as a lunar meteor would – except that the poorly estimated duration would lead to a strongly hyperbolic heliocentric velocity. Thus, the idea of systematic searches for both p- sible lunar meteors and meteoritic impact fashes was born. It was appreciated that much time might need to be expended to achieve any positive results. Systematic searches were carried out by others and myself chiefy in the years 1945–1965 and became a regular program at the newly founded Association of Lunar and Planetary Observers, or ALPO.
Faint Objects and How to Observe Them is for visual observers who are equipped with a 10-inch or larger astronomical telescope and who want to "go deep" with their observing. It provides a guide to some of the most distant, dim, and rarely observed objects in the sky, supported by background information on surveys and objects lists - some familiar, such as Caldwell, and some not so familiar. This book not only provides a wealth of experience compiled from several sources, but it also gives an historical background to surveys whose names may or may not be familiar to most amateur astronomers. Finally, it includes a listing of the many galaxy clusters out there, from "nearby" ones such as Stefan's Quintet to some of the most distant groups observable through the largest telescopes.
The genesis of modern searches for observable meteoritic phenomena on the Moon is the paper by Lincoln La Paz in Popular Astronomy magazine in 1938. In it he argued that the absence of observed fashes of meteoritic impacts on the Moon might be interpreted to mean that these bodies are destroyed as luminous meteors in an extremely rarefed lunar atmosphere. The paper suggested the possibility of systematic searches for such possible lunar meteors. With these concepts in mind, I was surprised to note a transient moving bright speck on the Moon on July 10, 1941. It appeared to behave very much as a lunar meteor would – except that the poorly estimated duration would lead to a strongly hyperbolic heliocentric velocity. Thus, the idea of systematic searches for both p- sible lunar meteors and meteoritic impact fashes was born. It was appreciated that much time might need to be expended to achieve any positive results. Systematic searches were carried out by others and myself chiefy in the years 1945–1965 and became a regular program at the newly founded Association of Lunar and Planetary Observers, or ALPO.
Berthed on the Cleveland lakefront, the battle-hardened submarine USS Cod serves as a proud reminder of the wartime contributions from the Greater Cleveland community. Clevelanders did their duty and more, from round-the-clock work on the factory assembly lines to the four Medal of Honor recipients on the front lines. The Cleveland Bomber Plant churned out thousands of B-29 parts, while Auto-Ordnance Co. developed the design for the Thompson submachine guns used by GIs on nearly every battlefield. Indians pitcher Bob Feller left the game to go into the service, and Clarence Jamison flew with the famed Tuskegee Airmen. Through interviews and archival material, authors Brian Albrecht and James Banks honor a time when Clevelanders of all stripes answered the call to arms.
For more than 70 years, Caffey’s Pediatric Diagnostic Imaging has been the comprehensive, go-to reference that radiologists have relied upon for dependable coverage of all aspects of pediatric imaging. In the 13th Edition, Dr. Brian Coley leads a team of experts to bring you up to date with today’s practice standards in radiation effects and safety and head and neck, neurologic, thoracic, cardiac, gastrointestinal, genitourinary, and musculoskeletal pediatric imaging. This bestselling reference is a must-have resource for pediatric radiologists, general radiologists, pediatric subspecialists, pediatricians, hospitals, and more – anywhere clinicians need to ensure safe, effective, and up-to-date imaging of children. Includes separate chapters on radiation effects and safety, pre-natal imaging, neoplasms, trauma, techniques, embryology, genetic anomalies, and common acquired conditions. Takes an updated, contemporary approach with more focused and consistently formatted content throughout. Clinical content includes Overview; Etiologies, Pathophysiology, and Clinical Presentation; Imaging, including pros and cons, costs, evidence-based data, findings, and differential diagnostic considerations; and Treatment, including follow-up. Features 8,500 high-quality images – 1,000 new or updated. Provides expanded coverage of advanced imaging and diagnostics, including genetics and fetal imaging, MRI and advanced MR techniques, low-dose CT, ultrasound, nuclear medicine, and molecular imaging, as well as the latest quality standards, evidence-based data, and practice guidelines. Features new Key Points boxes and more tables and flowcharts that make reference faster and easier. Focuses on safety, particularly in radiation dosing, as part of the Image Gently® campaign to improve pediatric imaging while limiting radiation exposure and unneeded studies.
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