11-30-2022, 01:20 AM
(This post was last modified: 11-30-2022, 01:34 AM by P.Rutherford.)
I'd like to know why there's so much difficulty placed in determining LHA in Eastern longitudes when all you do is add the whole degrees and then add 1 degree to it? Chris Nolan's many excellent videos, as Craig mentions, goes through a procedure which seems superfluous and unnecessary in getting LHA. Since the minutes of apL are ignored in getting the result why even bother- just add.
Bowditch in Chapter 19- Sight Reductions page 313 reads;
LHA (Local Hour Angle): The LHA is the hour angle of the observed body at a λ . The LHA is GHA - a λ , for west
longitudes and GHA + a λ for east longitudes. Note that this should be a whole degree, else you have chosen the a λ
incorrectly.
Paul
Bowditch in Chapter 19- Sight Reductions page 313 reads;
LHA (Local Hour Angle): The LHA is the hour angle of the observed body at a λ . The LHA is GHA - a λ , for west
longitudes and GHA + a λ for east longitudes. Note that this should be a whole degree, else you have chosen the a λ
incorrectly.
Paul