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Mathcad Electronic Books - Astronomical Formulas File Size 1.81 mb This Electronic Book, written by Dr. Martin V. Zombeck of the Smithsonian Astrophysical Observatory, covers such diverse areas as spherical astronomy, cosmology, stars, and stellar systems. Its designed for anyone with an interest in quantitative astronomy. Beginners get in-depth definitions and explanations of any quantity being calculated. Expert astronomers can skip directly to a variety of useful calculations. For example, you can change your data from the Equatorial to the Horizon coordinate system and Mathcad will automatically calculate the corresponding Horizon coordinates. Calculate the times of occurrence of the new Moon, First Quarter, Full Moon and Last (or third) Quarter using live Mathcad documents. Topics include: Spherical Astronomy (such as Coordinate Transforms, Julian vs. Calendar Date Conversions, Angular Separation, Precession and Astrometry), Ephemerides (such as the Sun, Moon and Planets), Astronomical Phenomena (such as Sunrise, Sunset and Twilight), Stars and Stellar Systems, and much more. Table of Contents | Sample File Download Estimate File size: 1.81 MB 4 minutes and 26 seconds. [56Kbps] and 24 seconds. [ADSL/Cable 640Kb] and 15 seconds. [T-1]