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By Scientific American

From the longest working column in clinical American's background comes this selection of interesting initiatives for newbie astronomersFor over seventy years, "The novice Scientist" column in clinical American has helped humans discover their global and make unique discoveries. This choice of either vintage and up to date articles provides tasks for newbie astronomers in any respect degrees. Hands-on astronomy enthusiasts will locate tips to construct reasonably cheap astronomical tools utilizing usual shop-tools. From creating a telescope to predicting satellite tv for pc orbits to detecting the chemical composition of remote stars, this booklet has whatever for everybody drawn to functional astronomy.

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The Behavior of the Telescope-maker's Pitch 28 4. The Dall-Kirkham Telescope 34 5. Principles of Erecting Telescopes 41 6. Powerful Pocket Telescopes 45 7. A Novel Refracting Telescope 49 8. "Off-Axis" Reflecting Telescopes 58 9. Steady Telescope Mountings 65 10. Two Amateur-Built Radio Telescopes 72 Part 2 The Sun 11. How to Observe and Record Sunspots Safely 87 12. Sun of a Gun 95 13. A Coronagraph to View Solar Prominences 99 14. Two Spectroheliographs to Observe the Solar Disk 105 Part 3 The Earth, Moon, and Satellites 15.

In brief," he wrote, "my process involves two disks of metal, one for the mirror and one that serves as a tool. One surface of the mirror blank is made concave and one surface of the tool convex so that the pair mate like a shallow ball and socket. The metal can be worked easily with a scraper and file if the experimenter does not have access to a lathe. The roughed-out blanks are ground together with successively finer grades of abrasive until their surfaces mate. Then the concave member of the pair is given a prepolish with pumice and finished like a mirror with rouge on a lap made of hard pitch.

A Coronagraph to View Solar Prominences 99 14. Two Spectroheliographs to Observe the Solar Disk 105 Part 3 The Earth, Moon, and Satellites 15. A Pendulum That Detects the Earth's Rotation 121 16. Observing Changes on the Moon 130 17. Curious Amateur Observations of the Moon 135 18. A Pauper's Guide to Measuring Latitude 143 Page vi 19. Precision Geolocation Using Lunar Occultation 147 20. Sundial Potpourri 155 21. How to Study Artificial Satellites 167 22. Predicting Satellite Orbits 176 Part 4 The Planets, Comets, and Stars 23.

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