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AP in the east.
#5
(03-03-2018, 02:51 PM)wannathermal Wrote: I think the instructions for Sight Reductions needs to have something like the following:

*  Assumed Position for east longitude use DR longitude integral degree plus 60'-GHA minutes for the minutes, If you are at 35° east and the GHA minutes are 33' then AP is E35° 27'  (60'-33'=27') 
The instructions work for West.
Greetings, Wannathermal.

Your suggestion makes sense.  But I use ( as an exercise, of course) very simple method :

For the West, assumed longitude , which I use to calculate LHA is equal to the DR longitude in degrees  and minutes equal to the minutes of GHA.  To make LHA even.  For instance, Dr  lat. 26 deg. 31 min. N, Dr long. 90 deg. 55.2  min. W,  GHA sun 52 deg. 38.1 deg min  Now, Assumed  long. is 90 deg. 38.1  min.  Therefore,  LHA =90.38.1 - 52. 38.1= 38-0 East.

East version, use the same approach just to make sure LHA is even. Well, need to admit the fix was never within 2 miles.  Always a little bit more.

Anyway, it works for me.

Again, thanks for the interesting approach.
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Messages In This Thread
AP in the east. - by wannathermal - 03-03-2018, 02:51 PM
RE: AP in the east. - by CarlosPindle - 03-03-2018, 03:11 PM
RE: AP in the east. - by wannathermal - 03-03-2018, 07:39 PM
RE: AP in the east. - by c_davidson - 03-03-2018, 10:02 PM
RE: AP in the east. - by Rumata - 03-04-2018, 07:42 AM
RE: AP in the east. - by wannathermal - 03-04-2018, 08:54 AM
RE: AP in the east. - by Rumata - 03-04-2018, 08:04 PM
RE: AP in the east. - by Rdutton - 03-05-2018, 01:15 PM
RE: AP in the east. - by wannathermal - 03-05-2018, 02:24 PM
RE: AP in the east. - by Rumata - 03-06-2018, 08:09 AM
RE: AP in the east. - by Rdutton - 03-05-2018, 02:52 PM
RE: AP in the east. - by wannathermal - 03-05-2018, 06:00 PM
RE: AP in the east. - by Rumata - 03-05-2018, 06:21 PM
RE: AP in the east. - by Rdutton - 03-05-2018, 08:44 PM
RE: AP in the east. - by Rdutton - 03-06-2018, 09:05 PM
RE: AP in the east. - by wannathermal - 03-10-2018, 07:30 AM
RE: AP in the east. - by Rumata - 03-11-2018, 03:39 AM
RE: AP in the east. - by Rdutton - 03-11-2018, 03:04 AM

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