F 17
Research, London. Of the days for international balloon ascents, May 7 and 8 were cloudy, a balloon was sent up on May 10, but burst after 15 minutes. On the morning of May 14 a balloon burst after 32 minutes' flight, one balloon burst before ascent and another after 2 minutes' flight.
Upper air temperatures were secured by Flying Officer N. Young, R.A.F. and the late Lieut. M.A. Maude R.N. on May 10, 11, 12, 13, 14 and 15.
Eclipse of the Sun.-The total Solar Eclipse of 1926, January 14 was observed at Hong Kong as a partial eclipse.
The sky was cloudless until 16h. 30m, when thin clouds gathered. The first contact occurred at 14h. 59m. 37s. (120th Meridian time) and the last contact (observed through thin cloud) occurred at 16h. 58m. 17s. The magnitude of the eclipse was 0.43.
One of the spots in the centre group of 2 spots was eclipsed at 15h. 45m. 07s. and emerged at 16h. 36m. 36s. The other was eclipsed at 15h. 59m. 40s. Its emergence was not observed.
The observations were made with a 3-inch comet seeker by projecting a 4-inch image of the sun on to a screen. The last contact, however, owing to cloud, was observed in the telescope with a sun glass.
The diagram at the end of the report, constructed from eye observations made every minute, shows the variations of magnetic declination during the eclipse. No effect on the temperature or pressure of the air could be detected on the autographic records.
The diminution of light was only very faintly perceptible.
International Longitude Determination.-In October the vernier time signals sent out at 0001-0006 G.M.T. from Nauen were observed by ear on 27 days and those sent out at 0801-0806 G.M.T. from Bordeaux were observed on 16 days.
The 0340-0345 G.M.T. vernier time signals from Honolulu were heard on 13 days, but atmospheric conditions at that time were invariably adverse to satisfactory reception. The Time Signals from Manila were observed on 5 days.
From the 6th to the 17th of October, owing to a partial failure of an electric contract, the performance of the sidereal clock, Cottingham & Mercer, was poor.
In November the Nauen and Bordeaux signals were observed on 25 and 17 days respectively.
The Honolulu signals were observed on 7 days and the Manila signals on 2 days. During this month, except for a cloudy period between November 14 to November 21, the determinations of local time were good.
F 17
Research, London. Of the days for international balloon as- cents, May 7 and 8 were cloudy, a balloon was sent up on May 10, but burst after 15 minutes. On the morning of May 14 a balloon burst after 32 minutes' flight, one balloon burst before ascent and another after 2 minutes' flight.
Upper air temperatures were secured by Flying Officer N. Young, R.A.F. and the late Lieut. M.A. Maude R.N. on May 10, 11, 12, 13, 14 and 15.
Eclipse of the Sun.-The total Solar Eclipse of 1926, January 14 was observed at Hong Kong as a partial eclipse.
The sky was cloudless until 16h, 30m, when thin clouds gathered. The first contact occurred at 14h. 59m. 378. (120th Meridian time) and the last contact (observed through thin. cloud) occurred at 16h. 58m. 178. The magnitude of the eclipse was 0.43.
One of the spots in the centre group of 2 spots was eclipsed at 15h. 45m, 07s. and emerged at 16h, 36m. 36s. The other was eclipsed at 15h. 59m. 40s. Its emergence was not observed.
J
The observations were made with a 3-inch comet seeker by projecting a 4-inch image of the sun on to a screen. The last contact, however, owing to cloud, was observed in the telescope with a sun glass.
The diagram at the end of the report, constructed from eye observations made every minute, shows the variations of mag- netic declination during the eclipse. No effect on the tempera- ture or pressure of the air could be detected on the autographic records.
The diminution of light was only very faintly perceptible.
International Longitude Determination.-In October the vernier time signals sent out at 0001-0006 G.M.T. from Nauen were observed by ear on 27 days and those sent out at 0801-0806 G.M.T. from Bordeaux were observed on 16 days.
The 0340-0345 G.M.T. vernier time signals from Honolulu were heard on 13 days, but atmospheric conditions at that time were invariably adverse to satisfactory reception. The Time Signals from Manila were observed on 5 days.
From the 6th to the 17th of October, owing to a partial failure of an electric contract, the performance of the sidereal clock, Cottingham & Mercer, was poor.
In November the Nauen and Bordeaux signals were observed on 25 and 17 days respectively.
The Honolulu signals were observed on 7 days and the Manila signals on 2 days. During this month, except for a cloudy period between November 14 to November 21, the determinations of local time were good.
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