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Lunar Meteoroid Impacts and How to Observe Them

Astronomers' Observing Guides

Erschienen am 04.12.2009, 1. Auflage 2010
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Bibliografische Daten
ISBN/EAN: 9781441903235
Sprache: Englisch
Umfang: xvi, 240 S., 152 s/w Illustr., 240 p. 152 illus.
Einband: kartoniertes Buch

Beschreibung

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.

Inhalt

Foreword. Introduction.- Part I: The Moon and Meteoroids. Widespread Evidence. Lunar Impact Features. Notable Collisions. A Catalogue of PIPs. Beyond the Moon.- Part II: An Observer''s Guide to Lunar Meteor Impacts, Past and Present. A Practical Astronomer''s Guide to Observing Lunar Features of Impact Origin. Impatcts Today. Lunar Transient Phenomena and Lunar Meteoroid Impacts. Lunar Impact Observation Programs. Observing Impacts as They Happen: Guidelines for Observing Lunar Meteoritic Phenomena. Helping to Find Collisions. Spurious Flashes. Future Directions in Lunar Meteor Impact Research.- Acknowledgements.- Appendix A: References. Appendix B: Equipment Checklist and Vendors. Appendix C: Details of Shortwave Time Signals for Astronomical Observations. Appendix D: Finding Limiting Magnitudes for Visual and Video Camera Observations. Appendix E: Standard Stars for Extinction Correction and Flux Calibration. Appendix F: Impact Plots.

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