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.