Analemma with the Erechtheion ... #4/11

Dear Friends,

I am delighted to be in a position to present yet another analemma
which represents the motion of the sun between January 7th and December
21st, 2003 and as observed and imaged precisely at 15:00:00 LMT (UT+2)
which also required a third annual effort to complete.

What is interesting is that the angle of this analemma is virtually
identical to the angle for the analemma one hour later. I checked the
ephemeris for these two analemmas (15:00:00 and 16:00:00 UT+2) and the
upper loops vary by about 1.5% in their slope whereas the bottom loops
vary by about 17%. One obvious feature for this new analemma is that the
two halves of the bottom loop exhibit a differential curvature near the
apex which is similar to that produced by computer simulations.

Anyway, a photo is worth a thousand words and, to this end, I
kindly direct you to
http://www.perseus.gr/Astro-Solar-Analemma-130000.htm ....

Next week we will be taking a look at some new mid-morning analemmas.

Best wishes and clear skies to all.

Anthony.

What about APOD this time ?

Thierry
http://www.astrosurf.com/lombry/analemma.htm
http://www.astrosurf.com/lombry/analemme.htm

"Anthony Ayiomamitis" wrote in message
...
Dear Friends,

I am delighted to be in a position to present yet another analemma
which represents the motion of the sun between January 7th and December
21st, 2003 and as observed and imaged precisely at 15:00:00 LMT (UT+2)
which also required a third annual effort to complete.

What is interesting is that the angle of this analemma is virtually
identical to the angle for the analemma one hour later. I checked the
ephemeris for these two analemmas (15:00:00 and 16:00:00 UT+2) and the
upper loops vary by about 1.5% in their slope whereas the bottom loops
vary by about 17%. One obvious feature for this new analemma is that the
two halves of the bottom loop exhibit a differential curvature near the
apex which is similar to that produced by computer simulations.

Anyway, a photo is worth a thousand words and, to this end, I
kindly direct you to
http://www.perseus.gr/Astro-Solar-Analemma-130000.htm ....

Next week we will be taking a look at some new mid-morning analemmas.

Best wishes and clear skies to all.

Anthony.

"Thierry" To answer me in private use
http://www.astrosurf.com/lombry/post.htm wrote:

What about APOD this time ?

Analemma Picture of the Day? That'll keep him out of mischief...

--
Martin Frey
http://www.hadastro.org.uk
N 51 02 E 0 47

"Martin Frey" wrote in message
...
"Thierry" To answer me in private use
http://www.astrosurf.com/lombry/post.htm wrote:

What about APOD this time ?

Analemma Picture of the Day? That'll keep him out of mischief...
Indeed.
The joke is excellent ;-))

Thierry

--
Martin Frey
http://www.hadastro.org.uk
N 51 02 E 0 47

"Martin Frey" wrote in message
...
"Thierry" To answer me in private use
http://www.astrosurf.com/lombry/post.htm wrote:

What about APOD this time ?

Analemma Picture of the Day? That'll keep him out of mischief...
Indeed.
The joke is excellent ;-))

Thierry

--
Martin Frey
http://www.hadastro.org.uk
N 51 02 E 0 47

"Martin Frey" wrote in message
...
"Thierry" To answer me in private use
http://www.astrosurf.com/lombry/post.htm wrote:

What about APOD this time ?

Analemma Picture of the Day? That'll keep him out of mischief...
Indeed.
The joke is excellent ;-))

Thierry

--
Martin Frey
http://www.hadastro.org.uk
N 51 02 E 0 47

"Martin Frey" wrote in message
...
"Thierry" To answer me in private use
http://www.astrosurf.com/lombry/post.htm wrote:

What about APOD this time ?

Analemma Picture of the Day? That'll keep him out of mischief...
Indeed.
The joke is excellent ;-))

Thierry

--
Martin Frey
http://www.hadastro.org.uk
N 51 02 E 0 47

Martin Frey wrote:

"Thierry" To answer me in private use
http://www.astrosurf.com/lombry/post.htm wrote:



What about APOD this time ?



Analemma Picture of the Day? That'll keep him out of mischief...

Awesome! :-)

Anthony.

What about APOD this time ?



Analemma Picture of the Day? That'll keep him out of mischief...

Awesome! :-)

Anthony.

I think you're going to need to buy more film and cameras,

;-)

Chuck Taylor
Do you observe the moon?
Try the Lunar Observing Group
http://groups.yahoo.com/group/lunar-observing/

************************************

What about APOD this time ?



Analemma Picture of the Day? That'll keep him out of mischief...

Awesome! :-)

Anthony.

I think you're going to need to buy more film and cameras,

;-)

Chuck Taylor
Do you observe the moon?
Try the Lunar Observing Group
http://groups.yahoo.com/group/lunar-observing/

************************************