Re: Starmapping software


OG wrote:
"oriel36" <geraldkelleher@xxxxxxxxx> wrote in message
news:1159212729.585895.280410@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

RMOLLISE wrote:
HI:

I'm curious, Oriole. Are you saying the sidereal day _is_ 23 hours and
56 minutes long...or that it _isn't_? What do those voices inside your
head say?


You are probably the last in the forum to realise that a star returns
to a meridian in 23 hours 56 min based on a system of 3 years of 365
days and 1 year of 366 days.

You prefer to have the solstice progress through the calendar?

The calendrical convenience of a 1461 day cycle broken up into 3 years
of 365 days and 1 year of 366 days was and remains a gorgeous human
achievement,so old that the further minor adjustments amounts to 10
days in 1582.As there is an alternate number of days every 4th year,it
should give you a clue that there are two systems involved,the first
governs the creation of the equable 24 hour day and does not involve
the stellar background and secondly,the calendar extension which is
celestial sphere based but cannot be used to justify the Earth's axial
and orbital motions.

The mismatch of the calendar with the annual orbital motions which
required a 10 day correction should indicate that the human devised
principle for the equable 24 hour day ( Equation of Time correction)
and its wonderful extension where the Earth's annual orbit is
calculated using equable 24 hour days are two seperate systems.

The heliocentric adaption of the equable 24 hour day to axial rotation
at the pace of a clock hand at 24 hours/360 degrees isolates axial
rotation without the need for any external reference.Orbital motion of
the Earth was isolated by Copernicus in his resolution for the motion
of the planets around the Sun -

http://antwrp.gsfc.nasa.gov/apod/image/0112/JuSa2000_tezel.gif

Nobody would have a problem recognising the faster Earth overtaking the
slower moving outer planets of Jupiter and Saturn thereby affirming the
planets orbit the Sun,on the same token there is never any need to
reference planetary motion to celestial sphere/calendrical geometry
otherwise the gorgeous insights of clocks/axial rotation and
retrogrades/heliocentricity would be destroyed.

The era of calendrical reform where 10 days was removed to bring the
calendar back in line with celestial sphere convenience demonstrates
that men can work together to correct things or adjust them to better
understanding of physical phenomena and data.A thorough astronomical
review is required to seperate the convenience of the calendar system
from actually justifying the Earth's motions using the calendar
system.It is not an easy task and made far more challenging in a
hostile enviroment which is based on the celestial sphere geometry of
the Ra/Dec system.

.

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