REPORTS OF ASTRONOMICAL OBSERVATORIES. 711 



IMoscow, Rttssia. 

 Ohserratonj of the Imperial University. 



Longitude from Greenwich, 2'' 30'" 1G».9 E. 



Latitude, 5r>o'4ry 10".8 X. 



Authority for latitude and louj;itude: Xautical Almanac. 



Directors : Krassiluskow, 1750 ; 



C. F. GOLDBACH, 1804; 

 Fischer, 1801 ; 



D. Perevotschikoff, 1824; 

 A, Draschnosoff, 18 — ; 

 K. S. SciiWEiZER, 185G; 



Prof. Dr. Theodore Bredichin, 1876. 

 Assistants: W. Ceraski; 



A. Belopolsky; 



A. SOCALOFF. 



Founded in 1753 as an annex to tbo University. A new building was 

 put up in 1804 in Bielogorod. 

 Instruments : 



(a) Meridian circle: one; maker, Repsold, in Hamburg; diameter 

 of circle, 36 inches; divided to 2'; read by 4 microscopes to 0.1"; ai)er- 

 ture of objective, 5.3 inches; magnifying power ordinarily employed, 

 100 diameters. 



(c) Equatorial instrument: maker, Merz, in Munich; aperture of ob- 

 jective, 10.7 inches; magnifying power of eye-pieces, 100 to 1200. {c') 

 Photoheliograph of Dalmayer, in London. 



(d) Universal spectroscope of Merz, in Munich ; direct vision with 

 10 prisms and micrometer. 



{e) One photometer of Zollner. 



(/) Chronograph: of Siemens and IIalske. 



\g) Cloclis: mean time, two: makers, Tiede, Utzschneider: sidereal, 

 two ; makes, Kessels, Tolstoi. 



(/<) Chronometers: mean time, two; maker, Dent: sidereal, two; 

 makers, Dent, Kessels. 



(i) Miscellaneous : transportable transit instruments, theodolites, uni- 

 versal instruments, &c. 



Observations during the past year (March to December, 

 1880): 



(a) Small planets. 



(c) Comets; Jupiter; spectroscopic observations of the sun. 



((/) Sun and comets. 



(e) Photometrical observations of stars. 



(i) The practical instruction of the students of the University. 



Work proposed for the comino year (1881): 

 The same as in the year 1880, and the investigation of tlie gravity at 

 Moscow with the reversion pendulum constructed by Kepsold. 



