Advice Needed for an Art Project (Moon Tracking)

Michael,

thank you for the background info and for the 'Solar System Live'
link. Unfortunately I am not able to arrange net access at the site of
the exhibition. It would certainly have made what I want to do much
easier!

Thanks again,

-- Paul

"Michael Mcneil" wrote in message news:

lgate.org...
Also:

http://www.fourmilab.ch/cgi-bin/uncgi/Solar

What happens with the moon is that it moves north and south of the
tropics by 5 degrees or so every Saros cycle. In other words the moon
rises to a different maximum declination every month. This increases and
decreases over 18 or so years.

Michael,

thank you for the background info and for the 'Solar System Live'
link. Unfortunately I am not able to arrange net access at the site of
the exhibition. It would certainly have made what I want to do much
easier!

Thanks again,

-- Paul

"Michael Mcneil" wrote in message news:

lgate.org...
Also:

http://www.fourmilab.ch/cgi-bin/uncgi/Solar

What happens with the moon is that it moves north and south of the
tropics by 5 degrees or so every Saros cycle. In other words the moon
rises to a different maximum declination every month. This increases and
decreases over 18 or so years.

Michael,

thank you for the background info and for the 'Solar System Live'
link. Unfortunately I am not able to arrange net access at the site of
the exhibition. It would certainly have made what I want to do much
easier!

Thanks again,

-- Paul

"Michael Mcneil" wrote in message news:

lgate.org...
Also:

http://www.fourmilab.ch/cgi-bin/uncgi/Solar

What happens with the moon is that it moves north and south of the
tropics by 5 degrees or so every Saros cycle. In other words the moon
rises to a different maximum declination every month. This increases and
decreases over 18 or so years.

"Funambulist" wrote in message
om...
Sam Wormley wrote in message
...

Suggest something like XEphem for moon angular position given
place, date and time.

Sam, thank you for pointing me to XEphem. I'm looking into it now --
though -- as it is X windows -- I wonder how easy it is to make the
azimuth angle and altitude to RealBasic and the USB interface that I'm
using?

You can work out the calculations from sources like
"Astronomical Algorithms" by Jean Meeus

"Explanatory Supplement To The Astronomical Almanac" Edited by
P. Kenneth Seidelmann, U.S. Naval Observatory, Washington D.C.

Thanks too for these pointers.

Since posting here I've stumbled across Keith Burnett's pages on
Astronomical Calculations

http://www.xylem.f2s.com/kepler/index.html

And wonder whether his 'Position of the Moon to 0.3 Degrees'
calculation and his 'Converting RA and DEC to ALT and AZ' might be all
I need?

http://www.xylem.f2s.com/kepler/moon.html
http://www.xylem.f2s.com/kepler/altaz.html

Has anyone any experience with these calculations? Anyone know how I
can contact Keith?

Thanks again,



No, but your tip of the index finger at arms length subtends an angle of a
degree or so (in my case about 1.5 degrees). In that case, an accuracy of
0.3 degrees would be more than adequate for your purposes.

DaveL

"Funambulist" wrote in message
om...
Sam Wormley wrote in message
...

Suggest something like XEphem for moon angular position given
place, date and time.

Sam, thank you for pointing me to XEphem. I'm looking into it now --
though -- as it is X windows -- I wonder how easy it is to make the
azimuth angle and altitude to RealBasic and the USB interface that I'm
using?

You can work out the calculations from sources like
"Astronomical Algorithms" by Jean Meeus

"Explanatory Supplement To The Astronomical Almanac" Edited by
P. Kenneth Seidelmann, U.S. Naval Observatory, Washington D.C.

Thanks too for these pointers.

Since posting here I've stumbled across Keith Burnett's pages on
Astronomical Calculations

http://www.xylem.f2s.com/kepler/index.html

And wonder whether his 'Position of the Moon to 0.3 Degrees'
calculation and his 'Converting RA and DEC to ALT and AZ' might be all
I need?

http://www.xylem.f2s.com/kepler/moon.html
http://www.xylem.f2s.com/kepler/altaz.html

Has anyone any experience with these calculations? Anyone know how I
can contact Keith?

Thanks again,



No, but your tip of the index finger at arms length subtends an angle of a
degree or so (in my case about 1.5 degrees). In that case, an accuracy of
0.3 degrees would be more than adequate for your purposes.

DaveL

"Funambulist" wrote in message
om...
Sam Wormley wrote in message
...

Suggest something like XEphem for moon angular position given
place, date and time.

Sam, thank you for pointing me to XEphem. I'm looking into it now --
though -- as it is X windows -- I wonder how easy it is to make the
azimuth angle and altitude to RealBasic and the USB interface that I'm
using?

You can work out the calculations from sources like
"Astronomical Algorithms" by Jean Meeus

"Explanatory Supplement To The Astronomical Almanac" Edited by
P. Kenneth Seidelmann, U.S. Naval Observatory, Washington D.C.

Thanks too for these pointers.

Since posting here I've stumbled across Keith Burnett's pages on
Astronomical Calculations

http://www.xylem.f2s.com/kepler/index.html

And wonder whether his 'Position of the Moon to 0.3 Degrees'
calculation and his 'Converting RA and DEC to ALT and AZ' might be all
I need?

http://www.xylem.f2s.com/kepler/moon.html
http://www.xylem.f2s.com/kepler/altaz.html

Has anyone any experience with these calculations? Anyone know how I
can contact Keith?

Thanks again,



No, but your tip of the index finger at arms length subtends an angle of a
degree or so (in my case about 1.5 degrees). In that case, an accuracy of
0.3 degrees would be more than adequate for your purposes.

DaveL