Paul Jackson wrote, on 9 May-
"I took a Lunar distance in position - 36 48.0 S - 174 46.0 E @ 9 Days 18
hours 15 min 52 sec on the 9th of may 2010.
Calculated Alt moon 20 33.9
Calculated Alt Jupiter 22 02.6
Distance near limb moon & Jupiter = 7 20.8
My Navigator software gives me a lunar time of 2:57:42 GMT how can this be,
can you guys at Nav List Help."
He added an attachment, which seemed irrelevant.
We have agreed that his calculated altitudes for both Moon and Jupiter from
that place at that time are seriously in error. Paul seems prepared to
dismiss that result and go on to take another lunar. But that won't answer
the question of what was going wrong. Where, I ask Paul, did those
altitudes that he quoted come from? Did he calculate them himself? If so,
how? Or did he take them from some "Navigator software" that he refers to,
which he hasn't yet identified to
us? In which case, what, exactly, were
the numbers that he fed into that program? If he feeds in those same
numbers again, does he get the same results?
If Paul wishes to ask Navlist for help, which is willingly available, he
should be prepared to supply backup information so that we can get our
teeth into his problem. Something has gone seriously wrong, and unless,
between us, we can identify what it is, the error won't go away.
George.
contact George Huxtable, at
george@hux.me.ukor at +44 1865 820222 (from UK, 01865 820222)
or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
