Celestial Navigation
Sight Reduction Calculator
Dead Reckoning
Latitude
°
'
N
S
Longitude
°
'
W
E
Celestial Object
DEC
°
'
N
S
GHA
°
'
W
SHA
°
'
W
E
1/2 Diameter
'
Lower limb
upper limb
Horizontal Parallax
'
Observation Data
Height of Eye
m
Atm. Pressure
mbar
Temperature
°C
Sextant error
'
On the Arc
Off the arc
Sextant angle
°
'
Calculation Results
LHA
°
'
Dip of Horizon
-
'
Refraction
-
'
Observed Alt.
°
'
Parallax
+
'
Augmentation
'
Corrected Alt.
°
'
Calculated Alt.
°
'
Position line is
nm
object
Bearing to Object
°
Last modified: Thu Feb 25 19:39:30 EST 2010