CHAPTER XIII. METHODS OF DERIVING THE POSITIONS AND PROPER MOTIONS OF

THE STARS FROM PUBLISHED RESULTS OF OBSERVATIONS. Section I. Historical Review. II. Reduction of Catalogue Positions of Stars to a Homogeneous System. III. Methods of Combining Star Catalogues.

NOTES AND REFERENCES

List of Independent Star Catalogues. Catalogues made at Northern Observatories. Catalogues made at Tropical and Southern Observatories.

APPENDIX

EXPLANATION OF THE TABLES OF THE APPENDIX.—I. Constants and Formulæ in Frequent Use. II. Tables Relating to Time and Arguments for Star Reductions. III. Centennial Rates of the Precessional Motions. IV. Tables and Formulæ for the Trigonometric Reduction of Mean Places of Stars. V. Reduction of the Struve-Peters Precessions to the Adopted Values. VI. Conversion of Longitude and Latitude into R. A. and Dec. VII. Refractions. VIII. Coefficients of Solar and Lunar Nutation. IX. Three-place Logarithms and Trigonometrical Functions.

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