Re: predicting position of earth, moon and sun

flacco <[EMAIL PROTECTED]> wrote in
news:[EMAIL PROTECTED]: 

> hello astronomy experts -
> 
> 
> i'm looking for techniques for predicting dates on which the position
> of the moon and sun as seen from a given position on earth are as
> follows: 
> 
> 
> - the sun is near sunrise
> 
> - the moon's position is near the horizon, above the point of sunrise.
> 
> 
> if this is unclear, here's my picture worth a thousand words:
> 
> 
> 
> 
>                     **   (moon)
>                     **
> 
> 
> -----------------------------------------------  (horizon)
> 
>                    ***
>                   *****   (rising sun - not visible below horizon)
>                    ***
> 
> 
> 
> 
> i recently missed an excellent photography opportunity under these 
> conditions and i'd like to track down this set of conditions again,
> this time with camera in hand.
> 
> 
> thanks!
> 
> 

Just look at a calendar to see the date of the new moon. The situation
you describe will occur on the mornings a few days before every new
moon. 

If you want to see the exact position of the moon at such date/time/
location. Then any planetarium program will show you this informatiom. 

Download the freeware "Cartes Du Ceil" (Sky Chartes):

http://www.stargazing.net/astropc

If you want to know how the calculations are done. Order the book:
"Astronomical Algorithms" by Jean Meeus. Willman Bell sell it:

http://www.willbell.com/math/mc1.htm


Regards Llanzlan.