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14
4. Namsos.
(f = 64° 28’ 12" Å = 11° 31’ 33" E. Greenwich.
Ved Bunden af Bugten nordenfor Byen, c. 7 Meter
fra Stranden, strax sønclenfor Stien, der fører videre til en
Grind.
Declination. 1870. August 19 fandt Prof. Mohn ved
corresponderende Højder af Solen1 Kronometret Frodskams
Korrektion til Stedets Middeltid lig -f- O’’ 31’" 47.’85.
Kronometret vandt daglig 5.’12.
Den 18de August om Eftermiddagen gjorde vi begge
i Forening Observationer til Bestemmelse .af Azimut og
Deklination.
4. Namsos.
cf = 54° 28’ 12" l — 11° 31’ 33" E Greenwich.
At the head of the bay, north of the town, about 7
metres from the shore, and directly south of the pathway
leading to a gate.
Declination. 1876. Aug. 19 Professor Mohn found,
from equal solar altitudes,1 the error of the Frodsham
chronometer on mean local time == O’’ 31’" 47/85;
chronometer gaining daily 5/12.
On the 18th of August, in the afternoon. Professor
Mohn and myself took observations to determine the
azimuth and declination.
Ch. 0| 5a 47"’ 54’ 51’" 53: 5’’ 49"1 53-"5 Magnet I 98° 26’
„ I© 50 18 54 17 52 17-5 — II 99 o
a 5. 5.5 1 - 1 26 -
XT. + 31 51-7 98° 43’
M. T. 6 22 57.2 Magnet 278" 43/0 — 180"
E. — O 3 29. 2 N. p. 2Q2 25. g
t 6 iq 28.0 Decl. 13° 42/9 W.
a N 80" 2/9 W.
0 212 23.0
N. P. 292 25.9
Horizontal-lntensitet.
1879. Aug. 18.
Afbøjnings-Observation. Kl. 11.30 Min. Form, til
12.50 Min. Eft.
f„ = 67."3; t(„ = 31° 29’ 42"; < = 13" 35’ 40".
C. Wille.
Svingnings-Observation Kl. 1.51 Min. til 2.3 Min. Eft.
t0 = 70.°7: T„ = 4.’7183: s = 5.’12; a = 76’; a’
= 24’; H = 4.’1. 0. Wille.
Resultat: P = 0.02671; m — 0.75760; X = 2.9639.
Inklination.
1876. August 19. Kl. 10.30 Min. til 11.30 Form.
.Naal No. 1. C. Wille.
H = 74" 2.’3.
Samme Dag. Kl. 5.0 Min. til 6.0 Min. Eft. Naal
No. 2. H. Mohn.
. H = 74° 2.’3.
1 H. Mohn. Astr. Obs. Side 7.
Horizontal Intensity.
1876. Aug. 18.
Observation of Deflection: — 11.30 a. m. to 12.50
p. 111.
’. t„ = 67."3; M„ = 31" 29’ 42"; !t„’ = 13° 35’ 40".
C. Wille.
Observation of Vibration: — 1.51 p. 111. to 2.3 p.m.
f„ = 70.°7; T„ = 4.’7183; s = 5.’12; a = 76’; a’ =
24’; u = 4.1. C. Wille.
Result: l’ = 0.02671: m =0.75760; X = 2.9639.
Inclination.
1876. Aug. 19: — 10.30 a.. 111. to 11.30 a. 111.
Needle No. 1. C. Wille.
II = 74" 2.’3.
Same Day: — 5.0 p. in. to 6.0 p. 111. Needle
No. 2. H. Mohn.
« = 74° 2.’3.
1 H. Mohn. Astronomical Observations, [1. 7.
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