On Feb 24, 12:13 am, Sam Wormley <sworml...@gmail.com> wrote: > On 2/23/12 4:14 PM, oriel36 wrote: > > > "Flamsteed used the star Sirius as a timekeeper correcting the > > sidereal time obtained from successive transits of the star into solar > > time, the difference of course being due to the rotation of the Earth > > round the Sun. > > Flamsteed was a smart guy... Sirius could be used for keeping sidereal > time, as can any bright star. But sidereal time *only* depends on > the rotation of the earth about its polar axes, and *nothing to do* > with the earths orbit!
This is what stellar circumpolar motion looks line -
The only proper interpretation of 'set and rise' is the disappearance and the emergence of Sirius from behind the glare of the central Sun due to the orbital motion of the Earth and putting the star in stellar circumpolar motion locks out this wonderful observation known to all astronomers from all ages who put it to good use.The perception of the orbital rising of Sirius gives the astronomer a feel of the spacial arena which is lost by a rotating celestial sphere and it is times to restore the difference between stellar circumpolar motion and the seasonal appearance of certain stars into view such as Sirius.
The people who go outside to enjoy the celestial arena and the nightly parade of objects and stars should not diminish the observations of astronomers from antiquity who used the appearance of Sirius as a marker for seasonal events ,one of which provides us with the 1461 day calendar cycle.It is so special a feeling to open up a chapter of astronomy that has been lost for a number of centuries and I ask men to come to their senses and make the small effort to move away from the calendar generated clockwork solar system of stellar circumpolar motion and into a type of astronomy the wider world could really use at the moment.
" Canst thou bind the sweet influences of Pleiades, or loose the bands of Orion? Canst thou bring forth Mazzaroth in his season? or canst thou guide Arcturus with his sons? Knowest thou the ordinances of heaven? canst thou set the dominion thereof in the earth? " The Book of Job
So prevalent is the astronomical event of the emergence of Sirius,everything from the Book of Job to Percy Shelley,that the poets as well as the astronomers took note of its seasonal marker and that last sentence in Job is striking for it does ask the reader can you connect the celestial motions with terrestrial effects,something which hasn't happened in so long.
I feel deeply for the momentary loss of astronomy yet like Sirius it will rise once more in the hearts of good men and I can say that as a man who has known his fair share of hostility and dealt with matters as all men should.