Thread: VLBI
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Old December 11th 12, 07:37 PM posted to sci.astro.amateur
oriel36[_2_]
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Default VLBI

On Dec 10, 8:48*pm, "Lord Androcles, Zeroth Earl of Medway"
wrote:
"oriel36" *wrote in message

...

On Dec 10, 5:46 am, "Lord Androcles, Zeroth Earl of Medway"









wrote:
"oriel36" *wrote in message


...


On Dec 9, 9:55 pm, Martin Brown
wrote:


On 08/12/2012 23:09, Quadibloc wrote:


On Dec 7, 12:58 pm, oriel36 wrote:
The use of VLBI has about the same intellectual substance as
photographing the wandering Sun analemma


In the sense that both are based on the knowledge of the physical laws
that govern the universe he is actually right.


The great thing about VLBI and any other large network of interferometer
telscopes is that with N scopes you get N(N-1)(N-2)/6 good phase
observables Jennison (1958) and N(N-1)(N-2)(N-3)/12 good amplitude
observables. It is for this reason that the VLBI network scopes tend to
take chances in stormy weather to stay on the network. Dropping from N=9
to 8 is a big hit.


http://en.wikipedia.org/wiki/Closure_phase


You are saying this to a newsgroup filled with people who have
frequently seen with their own eyes that the resolving power of a
telescope increases with its aperture - which is another manifestation
of the wave nature of light (Newton was partial to the opposing
corpuscular theory) on which VLBI is based.


At long last, have you no sense of irony?


Much harder to explain is intensity interferometry where photon counting
detectors were used to measure the diameters of the most promising super
giants were measured by Hanbury-Brown and Twiss at Jodrell Bank to prove
the concept and later with a much larger setup at Narrabi in South
Africa. The book is fairly rare but the technique led to a very fierce
debate in the physics community about it.


http://en.wikipedia.org/wiki/Hanbury...d_Twiss_effect


Wave paricle duality has some very interesting consequences. These guys
deserve much better recognition for their ground breaking research!


I don't actually like thi semi-classical derivation but it is online.
ISTR someone in s.e.d posted a link to a scan of the book but I don't
believe in copyright infringement so I am not reposting it here.


http://szczypka.web.cern.ch/szczypka...wiss/twiss.pdf


Note that in the implementation of the H-B intensity interferometer the
detectors were photon counting devices 931A phototubes if memory serves.
The correlation are real and determined by the baeline length and the
angular diameter of the source.


Regards,
Martin Brown


It doesn't matter whether a pendulum clock is used or VLBI,the
determination that local tracking of a star in stellar circumpolar
motion reflects daily rotation is false by virtue that it is a
homocentric determination which happens to be one step lower that
geocentricity and equivalent to astronomical oblivion.


I notice with greater frequency that they no longer call their
imaginative conceptions by the name of 'theories' but 'models' and the
first one was trying to model the motions of the Earth using the 24
hour AM/PM cycle allied with the Lat/Long system which in turn happen
to be an extension of the 1461 day calendar cycle in a format of 365
day/366 day rotations.


You don't have a feel for astronomical timekeeping nor structural
astronomy Brown and although you and your colleagues will continue
like this for a while,even a long while,but technically you are
finished as astronomy recovers the ability to correlate cause and
effect between dynamics and what happens on Earth.
================================================== ==
Rut roh... Kelleher is now preaching astrology. *My star sign is Cepheus,
Kelleher. What do the dynamic stars foretell my future to be, here on
Earth?
Will I go on a journey? Will I meet a short, blond and chubby woman?
Consult the crystal ball and the star charts for me, Kelleher.


-- This message is brought to you from the keyboard of
Lord Androcles, Zeroth Earl of Medway


The spiel of the two sticks in the ground,a watch and the return of a
star is homocentric which you jokers called relativity and so what if
you can't comprehend Isaac's *distortion of the Equation of Time as it
correlates natural noon AM/PM to 24 hour AM/PM,it is no more than I
have come to expect *from people who probably consider themselves less
of a thug than you are.Royal Society empiricism indeed !,it has been a
pleasure to watch it disintegrate through the natural processes which
are now visible through contemporary imaging and hang on to the
voodoo of equations - visible interpretation is always the great
equalizer and will be more so in the future.

If the IAU could be any less of an astronomical community I would not
know how,there is something so perverse in the inability to express
known planetary facts contained in the 24 hour AM/PM format as it is
tied to the Lat/Long system that you actually have to veer far out of
your way to support the Ra/Dec extensions and what it limitations are.

Turns out you are the same as all relativists/empiricists in being
chained to the same circumpolar error that is going nowhere while
genuine astronomy has been here all along.How many 'astronomers' made
a nice wage today under false pretenses when it is just as *easy to
work towards restoring a stable astronomical narrative which they can
have for nothing.

================================================== ==
My star sign is Cepheus, Kelleher. Help me out here, I need my
fortune told to me.


You are like the other dummy who designs and begins a game he doesn't
even have to play,loses it anyway and then goes on to instruct
everyone here not to correspond as if that was going to happen.It was
so easy before to get you into supporting the same relativity you rant
and rail against that I wouldn't even consider it a challenge but then
again,when did any of you challenge yourselves,more like thugs
shouting from the stands that frontier people at the boundaries of
creativity and productivity.

So,no need to predict anything,you are trapped in the same poor late
17th century conclusions as everyone else hence I know your
limitations and those you unfortunate people would impose on the rest
of the world so you could continue with a narrow-minded,mean spirited
existence where you only know each other by what you hate.