F 16
From observations of the Bordeaux signals in October and November, 1926, differences of longitude between Hong Kong and 9 other observatories have been determined as follows:-
Shanghai+ Signifies E of Hong Kong
- Signifies W of Hong Kong
Transit Instrument.-Routine transit and level observations were made by the Chinese computers throughout the year. The Collimation and Azimuth determinations and occasional transit observations were made by the Chief and First Assistants.
The number of observations in the years 1926 and 1927 was as follows:
1926 1927 Transits 1325 1156 Level determinations 689 566 Azimuth determinations (mark) 42 ... Azimuth determinations (transits of circumpolar stars) 119 ... Collimation determinations (mark) 102 121 Collimation determinations (stars) 44 ...Clocks. Sidereal clock Cottingham and Mercer, No. 507, has been in use as the Observatory Standard throughout the year. It stopped on February 19th owing to a defective battery. The losing rate was altered before re-starting, and since that date has varied between -0s.12 (on March 2nd and 26th) and -0s.53 (on October 13th) corresponding to variations of pressure in the clock case.
The Sidereal clock, Dent 39741, was cleaned and the rate altered on August 17. Since that date, its rate has been altered as found necessary to keep its error approximately the same as Cottingham.
The Mean Time clock, Leroy 1350, was used for dropping the Time Ball, maintaining the electric time service in the Observatory, and sending hourly signals to the Railway, the ...
F 16
From observations of the Bordeaux signals in October and November, 1926, differences of longitude between Hong Kong and 9 other observatories have been determined as follows:-
Shanghai
Washington Tsingtau Helwan
Dehra Dun
Algiers
Athens
Paris
Cape of Good Hope
h. m.
S.
+ 0.29.
0. 29. 1.68
12. 44. 56.95 +0. 24. 35.60
+1+11
5. 31. 19.35
2. 24. 29.39
7. 24. 32.69
6. 1. 49.35
7. 27. 20.21
·
6. 22. 46.60
+Signifies E of Hong Kong
Signifies W of Hong Kong
Transit Instrument.-Routine transit and level observations were made by the Chinese computers throughout the year. The Collimation and Azimuth determinations and occasional transit observations were made by the Chief and First Assistants.
The number of observations in the years 1926 and 1927 was as follows:
Transits
Level determinations
1926 1927
1325 1156
689
566
42
Azimuth determinations (mark) 119
...
Azimuth determinations (transits
of circumpolar stars)
Collimation determinations (mark) 102
121
44
Clocks. Sidereal clock Cottingham and Mercer, No. 507, has been in use as the Observatory Standard throughout the year. It stopped on February 19th owing to a defective bat- cery. The losing rate was anered before re-starting, and since that date has varied between Us.12 (on March 2nd and 26th) and Us.53 (on October 13th) corresponding to variations or pressure in the clock case.
The Sidereal clock, Dent 39741, was cleaned and the rate altered on August 17. Since that date, its rate has been altered as found necessary to keep its error approximately the same as Cottingham.
The Mean Time clock, Leroy 1350, was used for dropping the Time Ball, maintaining the electric time service in the Observatory, and sending hourly signals to the Railway, the
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