Re: Starmapping software


"oriel36" <geraldkelleher@xxxxxxxxx> wrote in message
news:1159820379.702869.229350@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

OG wrote:

"oriel36" <geraldkelleher@xxxxxxxxx> wrote in message
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Let me show you what you believe through Flamsteed's justification of
the return of a star to a meridian -

http://www.nmm.ac.uk/server/show/nav.00500300l005001000

In your mind a shadow returns to noon in 24 hours exactly

What does 'a shadow returning to noon' mean? . Noon is a time, A shadow
is a
moving line on the ground. You have confused yourself once again.


You haven't answered the question.What does 'a shadow returns to noon in 24
hours exactly' mean?



In your mind a shadow returns to noon in 24 hours exactly

Does the NMM definition of the 24 hour solar day include the word
'exactly'
in reference to the passage of the sun across the sky? No, I didn't think
so
either.

In your mind a shadow returns to noon in 24 hours exactly in order to
justify the reurn of a star in 23 hours 56 minutes 04 seconds.

The sidereal day is exact. There is no need to posit an exactness to the
solar day to determine the exactness of the sidereal day.

I can no longer compete with such rubbish as the NMM explanation above
when the actual principles which correlate clocks with axial rotation
through the noon Equation of Time correction at precisely 4 minutes for
each degree of rotation are so gorgeous that I have trouble imagining
why anyone would intentionally destroy it

It does not 'destroy' it to point out that it is dependent on a fudge
factor, a correction. You know what a "correction" is? it is something
needed to make something else correct!

<snippage>

The two step process which correlates axial rotation with the clocks
in 24 hours/360 degrees precisely is now open for anyone who cares to
explain it as a shared astronomical heritage which is gorgeous and
pragmatic.

Yes (apart from not being exact) it is indeed gorgeous; but it is
emphatically not exclusive of other more exact and useful means of
expressing the relationship between heavens and earth.

The correlation between axial rotation and the clock value is and
always will be 4 minutes for each degree of rotation precisely making
24 hours/360 degrees in total.

Where does the clock rate come from? You can't get a precise clock rate
from the Sun can you? The best you can get is a variable clock that needs
correction through the Equation of Time.

There is no burden attached to
appreciating the two step process which refers the pre-Copernican
Eqiuation of Time principles to its pragmatic heliocentric adaption to
axial rotation,it simply is for people who have genuine intellectual
and intuitive intelligence and I am prepared to leave it at that.

By two stage you mean 'the approximation of 24 hours isn't precise (though
it may be pragmatic), so it can be corrected by means of a calendrical fix.


.

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