REPORTS OF ASTRONOMICAL OBSERVATORIES. CSD 



Durham, England. 



Observatory. 



Longitude from GreenwicL, C" ll)^8 W. 

 Latitude, 54° 4G' G".2 is^. 

 Directors: T. Chevallier, 1840; 

 G. A. GOLDNEK, 1872. 

 Founded by subscriptiou in 1840. First observations made iu 1842. 



DusSELDOiJF, Pnmia. 

 Sternicarte [formcrhj named Bill). 



Longitude from Greenwich, 27'" 5" E. 



Latitude, 51° 12' 25" X. 



Autliority for latitude and longitude: "Astrouomisclie Naeliricliteu" 

 G43, and " Berliner Jabrbuch." 



Directors: J. F. Benzenber(t, 1800; • 

 F. BrIJNNOW, 1848; 

 Egbert Luther, 1855. 



Established in 1809, by J. F. Bei^zenberCt, the savant, who in 1844 

 erected a more complete building at Bilk, 1^ miles (two kilometers) 

 south of the town. This establishment, liberally endowed by its founder, 

 became the i)roperty of the town in 1847, and was enlarged by it in 1852. 

 2vearly twenty of the minor planets have been discovered here. 



Instruments : 



(a) An old repetition circle of one foot, by the late Baimann, at 

 Stuttgart, giving 10" of centesimal division. 



{b) Meridian transit instrument made by the late Emil Sciiijoedteh, 

 at Diisseldorf, objective from Munich, focal distance 2 feet, aperture 2 

 inches, little circle divided in half degrees, with nonius, one minute. 



(c) Xew e(iuatorial instrument, made by Charles Bamberg, at Ber- 

 lin, in use since September, 1877, objective by Dr. Sigmund Mekz, at 

 Munich, focal distance 7 feet, aperture 7 inches, magnifying powers of 

 eyepieces 49 to 188. Stars of the 1L5 nmgnitude can be seen with it. 

 Old reserve tube with horizontal and vertical motion, made by Merz 

 & Sons, at Munich, 1847, focal distance G feet, aperture 4^^ inches. Stars 

 of the 11.0 magnitude can be seen with it. 



{u) Two old sidereal time clocks made by Utzsciineider & Frau- 

 enhofer, at Munich. 



(/i) One mean-time chronometer by Kessels, at Altona, and a Swiss 

 watch. 



Some small instruments of minor importance. 

 S. Mis. 31 44 



