Occultation of Jupiter [JuzaPhoto]

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Occultation of Jupiter sent on July 15, 2012 (15:08) by Cristianfat. 43 comments, 8253 views.

Canon 5D Mark II, 2.5 sec f/5.0, ISO 800, tripod.

La mattina del 15 luglio 2012 la Luna è "passata" davanti a Giove, coprendolo per circa un'ora. Purtroppo alcune nubi mi hanno impedito di riprendere i momenti più prossimi ai contatti, ma in compenso hanno hanno fatto da cornice particolare all'evento. L'aspetto non inganni: nella realtà Giove è 40 volte più grande della Luna, solo che dalla terra risulta anche 1800 volte più distante! Le quattro stelline ai lati del pianeta sono i suoi satelliti principali, le "Lune Medicee", scoperte da Galileo Galilei. L'obiettivo usato è il telescopio 1200mm F5 dotato di correttore di coma.

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Some of the following comments may have been automatically translated with Google Translate.

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Danilo88

sent on July 15, 2012 (15:53)

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Congratulations! an excellent result! I photographed myself this morning, but your photos (with clouds) is unique and interesting!

Loryfac

sent on July 15, 2012 (16:06)

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Truly spectacular event itself particular, the clouds then give it that extra touch

Dexter

sent on July 15, 2012 (16:53)

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excellent one click! really excellent yield of 1200 and the reflex coupled ;-)

Falena

sent on July 15, 2012 (18:26)

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spectacular photos
but what do you mean " in reality Jupiter is 40 times larger than the Moon, " ......
then it seems to me that in relation to the small moons of Jupiter are too big here

Cristianfat

sent on July 15, 2012 (18:41)

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Hello everyone and thanks for the very kind compliments!

Dexter: The 1200mm F5 is a great astronomical instrument, and with the coma corrector is also an excellent telephoto lens, the only limit is the size and the consequent ease of use! :-)

Moth: Jupiter has a diameter of 142,000 kilometers, the moon even 3500 km, what makes the difference is the distance from which we observe the two celestial bodies!
The moons are "stretched" due to various factors, they were indeed very small, the problem was the long exposure time (2.5 seconds) with 1200mm focal length would require a very precise tracking and especially not disturbed by the light wind however, was present and has "spread" the light in a rather wide. Even the atmospheric turbulence, given the Very ceone low on the horizon, further helped to disrupt the achievement of a very fine detail, which would allow the lens, as you can go if you want to see on my website, in the gallery planet.

Hello!

Lagasi Michele

sent on July 15, 2012 (19:42)

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Truly a spectacular picture, very very nice. many compliments!!

Johnjz

sent on July 15, 2012 (23:30)

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Pure entertainment! The effect of clouds gives the picture a nice atmosphere!

Falena

sent on July 15, 2012 (23:48)

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ok confirmed in explanation I misunderstood the concept, precise diameter of Jupiter 142,984 km:-D cm cm more less ;-)

Cristianfat

sent on July 16, 2012 (1:09)

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It is not, dear moth! :-D
If we are honest that is the average diameter of Jupiter, which is very oblate, x whose diameter varies from several thousand kilometers!
Between 138,000 and 144,000 if I remember correctly! :-D

Gpierocompostela

sent on July 16, 2012 (8:57)

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Aaah ... but then you were prepared to the event, not like me who was completely ignorant and fell out of bed:-D the heat Executioner, was improvised astrophotographer, doing in a hurry to take, especially in the shadowed part of the moon, the kzzta more gigantic, non-re-thinking at the aperture f16 :-| :-( --- Congratulations, it's a photo, document, really good, veeery fascinating, technically can not be faulted, since the weather was not great, even if those clouds add a twist: Bravo, really. A cordial greeting. - G.Piero

Cristianfat

sent on July 16, 2012 (9:13)

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Thanks Gampiero, compliments and nice story!

Teresa Barberio

sent on July 16, 2012 (9:28)

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Spectacular! and those clouds, but in my opinion, have improved the photo.
Hello, Teresa

Cristianfat

sent on July 16, 2012 (13:30)

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And to think that those clouds I sent him many of those insults that you can not even imagine! :-D:-D:-D

Tore Serra

sent on July 16, 2012 (14:06)

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Beautiful, clouds in this case have given a touch of charm more, compliments ;-)

Juza

sent on July 16, 2012 (14:37)

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From the artistic point of view is amazing, too bad it lacks a bit of sharpness!

Cristianfat

sent on July 16, 2012 (15:07)

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Thanks also your judgment Juza!

Unfortunately, as imagine, 2.5 "display and wind (deduced from the velocity of clouds) do not get along very well with the sharpness when using longer focal lengths ....

I could do a montage recovering the sharpness of images with times less exaggerated, but it seemed an operation that would have made it a bit 'unnatural image, which like you said want to have more artistic value than a purely technical ... .

Falena

sent on July 17, 2012 (0:28)

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urca, cliffato:-D then preach this, the bigger star now known is VY Canis Majoris with a diameter of 2.9 billion km cm more cm in less:-D

Eug60

sent on July 17, 2012 (0:39)

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really good show, very good. :-P:-P:-P

Cristianfat

sent on July 17, 2012 (0:44)

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Thanks to you Eug60!

I'll have to start to thank the clouds .... in spite of myself! ;-)

Cristianfat

sent on July 20, 2012 (10:13)

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Small personal satisfaction:

Today, July 20, NASA's site "APOD", which publishes daily international astronomical images, chose to show this photo of me occultation of Jupiter by the Moon as picture of the day.
It will then be visible on the home-page only now and then switches to the archive General.

You can "see you again" at this link:

apod.nasa.gov/apod/astropix.html

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