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Blue Moon.


Blue Moon.
Photo Information
Copyright: Luis Leal (Luis52) Gold Star Critiquer/Gold Note Writer [C: 1109 W: 5 N: 3453] (12751)
Genre: Landscapes
Medium: Color
Date Taken: 2009-06-07
Categories: Sky
Camera: Nikon D700, 80-200 f2.8D ED AF Nikkor+1.5X Kenko
Exposure: f/4.5, 1/320 seconds
Photo Version: Original Version
Theme(s): The Moon [view contributor(s)]
Date Submitted: 2009-06-27 14:29
Viewed: 527
Points: 22
[Note Guidelines] Photographer's Note
Lunar phases are the result of looking at the illuminated half of the Moon from different viewing geometries; they are not caused by shadows of the Earth on the Moon that occur during a lunar eclipse. The Moon exhibits different phases as the relative geometry of the Sun, Earth, and Moon change, appearing as a full moon when the Sun and Moon are on opposite sides of the Earth, and as a new moon (also named dark moon, as it is not visible at night) when they are on the same side. The phases of full moon and new moon are examples of syzygies, which occur when the Earth, Moon, and Sun lie (approximately) in a straight line. The time between two full moons (and between successive occurrences of the same phase) is about 29.53 days (29 days, 12 hours, 44 minutes) on average (hence, the concept of a timeframe of a period of time of an approximated month was derived). This synodic month is longer than the time it takes the Moon to make one orbit about the Earth with respect to the fixed stars (the sidereal month), which is about 27.32 days. This difference is caused by the fact that the Earth-Moon system is orbiting about the Sun at the same time the Moon is orbiting about the Earth. The actual time between two syzygies is variable because the orbit of the Moon is elliptic and subject to various periodic perturbations, which change the velocity of the Moon.

It might be expected that once every month when the Moon passes between Earth and the Sun during a new moon, its shadow would fall on Earth causing a solar eclipse. Likewise, during every full moon, we might expect the Earth's shadow to fall on the Moon, causing a lunar eclipse. We do not observe a solar and lunar eclipse every month because the plane of the Moon's orbit around the Earth is tilted by about 5 degrees with respect to the plane of Earth's orbit around the Sun. Thus, when new and full moons occur, the Moon usually lies to the north or south of a direct line through the Earth and Sun. Although an eclipse can only occur when the Moon is either new or full, it must also be positioned very near the intersection of Earth's orbit plane about the Sun and the Moon's orbit plane about the Earth (that is, at one of its nodes). This happens about twice per year, and so there are between 4 and 7 eclipses in a calendar year. Most of these are quite insignificant; major eclipses of the Moon or Sun are relatively rare.

Saludos
Luis52
CeltickRanger, eqshannon, Alex99, nasokoun, haraprasan, jaycee, Juyona, anel has marked this note useful
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Critiques [Translate]

hello Luis

beautiful photo of the Moon, i love the way it is framed
with the dark blue sky and the shadowed silhouette
of the foreground, TFS

Asbed

A very nice and quite useful explanation to accompany the image..which is of course #1 a moon shot and # 2 a shot by Mexicans Numbero uno photographer in my eyes!
Bob

  • Great 
  • tcr Gold Star Critiquer/Gold Note Writer [C: 72 W: 0 N: 201] (796)
  • [2009-06-27 19:50]

Olá.
Visual claro e nítido da lua fazendo um ótimo contraste com
a parte de baixo da imagem.
Belo trabalho.
TFS.

  • Great 
  • Alex99 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3551 W: 143 N: 5621] (18399)
  • [2009-06-27 23:11]

Hi Luis.
Every photographer must have moon series. Your picture is not common and very impressive. First, Moon is detailed and ex[posed very well. Second, you managed to show impressive surroundings. I like precise exposure of the image and nice shapes of covered by trees hills (or, may be, mountain). Excellent work. My compliments and TFS.
Alexei.

hello Louis
splendid glance and result, very good the composition with the choice of hill, very good the details with this lens
TFS
Nasos

Hi Luis,
A nice capture of the full moon. Excellent composition and very good details. Thanks a lot for sharing.

Great details here, Luis. A good job with a 200 and a 1.5 (though that's not your average 200mm). There seems to be a bit of noise in the sky that might be worth trying to remove with software, though it would probably reduce some of the details on the moon, too.
Mike

Hi Luis,
Nice detail and sharpness of the moon which is not always easily achieved.Nice well defined image with excellent sharpness. Well done and TFS,
erwin.....

  • Great 
  • jaycee Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2493 W: 11 N: 6885] (21912)
  • [2009-06-28 16:07]

Hola Primo,

Another one of your pictures that could easily win a contest. The moon is perfect with marvelous details. It glows against the setting of the dark blue sky and the silhouette of the trees. Beautiful!!

Jane

  • Great 
  • Juyona Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2252 W: 10 N: 2594] (15451)
  • [2009-06-29 15:32]

Hola Luis,
preciosa luna,
interesante silueta y atractiva presentación...
fino trabajo,
saludos amigo.

  • Great 
  • anel Gold Star Critiquer/Gold Note Writer [C: 1689 W: 0 N: 3811] (15342)
  • [2009-07-04 5:32]

Hello Luis,
Very romantic! Excellent decentred composition, a beautiful blue of the night-sky and an interesting note.
Thanks a lot.
Kind regards
Anne

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