RE: Jyotish: Bhava Chart

[Guest guest]

Dear Roy and other list Members,

 

My understanding is that the lunar parallax correction (which is calculated

on my goravani software) is simply the Topocentric position of Moon, so

perhaps it's misleading to refer to it as "parallax". I will send a copy of

this to the goravani jyotish list and perhaps Das (the creator of the

program) can throw some light on this for the benefit of us all. All I can

say with absolute certainty is that without the correction my dasa periods

are way off...with it they're spot on.

 

Regards

Wendy

 

ps: it seems to be a bit of a hornet's nest at the moment...sorry about

that!

 

 

 

jyotish-list-approval

[jyotish-list-approval]On Behalf Of Roy Kirkland

Friday, October 20, 2000 12:11 PM

jyotish-list

RE: Jyotish: Bhava Chart

 

 

>unrelated topic removed<

 

I also want to mention the parallax question that has been discussed lately.

Why is everyone doing parallax without considering the altitude of the place

of birth? The first (and only) author that I know of to have tackled this

problem scientifically was Donald Bradley, before he was a Siderealist. The

whole reason for doing the correction was that the ephemeredes were

calculated for the center of the Earth, and that not only the correction for

the oblate spheroid shape of the Earth mattered, but the Altitude of the

place for the chart did as well. So if the angle of view from the center of

the Earth to the place of observation is not considered, what parallax is

being corrected here? Is it a slightly different take on geocentric vs.

geographical latitude or what? He demonstrated this very succinctly in the

case of the 1929 stock market crash, but I unfortunately no longer have the

booklet with the example written out in full, or I would reproduce the

proof. With the extreme latitude the Moon can achieve (which is very

important when the Moon is near the horizon - it may not be above the

horizon when the simple ephemeris calculations say it is) this becomes very

important - the position can vary as much as 3 degrees! If the programs had

an input for the altitude of a location, I would use the parallax correction

they provide. Since they don't, I stick by the Bradley method if I see that

it may affect the analysis of the chart. If someone has a good description

of the equations that demonstrate the parallax effect (the way it is done in

modern programs), I would appreciate a description of them, since I may be

missing something due to the bias of a background in "scientific" astronomy.

 

Roy Kirkland

rek

 

 

 

 

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