A set of linear tables, for correcting the apparent distance of the moon from the sun or a fixed star, for the effect of refraction; to which are added, tables for parallax, and rules for computing the true distance
author, and sold, 1815 - Nautical astronomy
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15 Lefs 150 Lefs Altitude 30 DISTANCE added Altitude 100 APPARENT ALTITUDE Apparent distance applied AUTHOR containing Corr Corrected distance correction for parallax correction for refraction corresponding corrections degrees of distance DESCRIPTION diff difference direct Dist distance 30 distance 91 distance is less EFFECT OF REFRACTION EXAMPLE excess find the correction find the true fore give the correction given distance greater altitude 34 LATE Leadenhall Street Lefs Altitude 200 left margin less altitude 12 less than 90 Linear Table marked Long methods MOON Moon's altitude Moon's app Moon's hor MOON'S HORIZONTAL PARALLAX moon's parallax NAUTICAL NAVIGATION nearest second obtain opposite parallax in altitude perpendicular lines Polar Distance PREFACE proportional logarithm referred horizontally render right or left Secant Second Arch Sine STAR Star's app subtracted Sun's app sun's parallax Tang Third correction tion trace true distance გი ვი