Sternfinder
1
Star Finder (Celestial Globe)
1
Indicateur d’étoiles
Bedienungsanleitung
1
Operating Instructions
1
Mode d’emploi
© 2012 FPM Holding GmbH
26
Example 5:
Observed on January 12, 1953
At S.T. = 6
h
30
m
on
4
= 54° N and
2
= 35° 12’ O
Determine the local hour angle
3
?
S.T. of observation
= 6
h
30
m
Time difference T.D. between S.T. and
G.M.T.
= -2
h
00
m
G.M.T. of observation on January 12, 1953
= 4
h
30
m
For January 12, 1953, one finds in the Nautical Year Book 1953:
G.H.A.
3
for 4
h
G.M.T.
for 30
m
(table)
= 171°
= + 7°
21.3’
31.3’
G.H.A.
3
for 4
h
30
m
G.M.T.
Eastern longitude
2
east
= 178°
= + 35°
52.6’
12.0’
L.H.A.
3
for 4
h
30
m
G.M.T.
= 214°
4.6’
Example 6:
Observed on January 12, 1953
At S.T. = 19
h
20
m
on
4
= 54° N and
2
= 14° 27’ W
Determine the local hour angle
3
?
S.T. of observation
= 19
h
20
m
Time difference T.D. between S.T. and
G.M.T.
= +1
h
00
m
G.M.T. of observation on January 12, 1953
= 20
h
20
m
For January 12, 1953, one finds in the Nautical Year Book 1953:
G.H.A.
3
for 20
h
G.M.T.
for 20
m
(table)
= 52°
= + 5°
0.7’
0.8’
G.H.A.
3
for 20
h
20
m
G.M.T.
Western longitude
2
west
= 57°
= -14°
1.5’
27.0’
L.H.A.
3
for 20
h
20
m
G.M.T.
= 42°
34.5’