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Maximum Partial Totality and Umbral Shadow

  • ayiomamitis
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16 years 4 months ago #72276 by ayiomamitis
Maximum Partial Totality and Umbral Shadow was created by ayiomamitis
Dear friends,

The year's fourth eclipse and second lunar eclipse went out with a bang, for Luna put on an impressive display during the course of approximately three hours involving changes in phase, intensity and colouration. It is most unfortunate that a good portion of western Europe was overcast with heavy clouds or rains.

In spite of the fact that the depth of the partial eclipse was 81%, a hint of red was visible in the eclipsed disk well before maximum totality and when the disk was only 50% within the umbral shadow. At maximum, the eclipsed disk was quite dark with only a trace of light and, as indicated by the first link below, a long exposure (3.2 seconds at ISO 200) was required.

For my two initial results (with more on the way), I kindly direct you to:

(1) www.perseus.gr/Astro-Eclipses-2008-08-16.htm
(2) www.perseus.gr/Astro-Eclipses-2008-08-16b.htm

The first result (and link above) is the partial totality at maximum and which required a 3.2" exposure. The second result (and link above) is the impressive umbral shadow which often is overlooked when presenting lunar eclipse images and which illustrates the umbral cone in action.

It is unfortunate that we must wait nearly six months for the next eclipse and whose path of annularity is in Indonesia.

Anthony Ayiomamitis
Athens, Greece
www.perseus.gr

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16 years 4 months ago #72280 by dave_lillis
Replied by dave_lillis on topic Re:Maximum Partial Totality and Umbral Shadow
Very nice Anthony.
I reckon very few here saw it, you're so lucky with the weather in that part of the world.

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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  • DeirdreKelleghan
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16 years 4 months ago #72284 by DeirdreKelleghan
Replied by DeirdreKelleghan on topic Re:Maximum Partial Totality and Umbral Shadow
Anthony you are the right guy in the right place once again. Great set of images. :ohmy:

Deirdre Kelleghan
www.deirdrekelleghan.com

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  • ayiomamitis
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16 years 4 months ago #72296 by ayiomamitis
Replied by ayiomamitis on topic Re:Maximum Partial Totality and Umbral Shadow
Thanks to both of you!

I would be the first to confess that our great weather is a serious "weapon" which I try and use/abuse as much as possible. :)

Anthony Ayiomamitis
Athens, Greece
www.perseus.gr

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16 years 4 months ago #72310 by Paul FitzGerald
Replied by Paul FitzGerald on topic Re:Maximum Partial Totality and Umbral Shadow
Dave_Lillis wrote:

Very nice Anthony.
I reckon very few here saw it, you're so lucky with the weather in that part of the world.


Anthony, it's a total wash out over here at the mo., with more due shortly :( .

BTW, congrats on your 2nd image featuring on today's (Mon.) LPOD. :woohoo:

Paul Fitz
MAC Treasurer

'Astronomy shows how small and insignificant and rare and precious we all are.' - Contact.

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16 years 4 months ago #72348 by Paul FitzGerald
Replied by Paul FitzGerald on topic Re:Maximum Partial Totality and Umbral Shadow
...and again on Wednesday's APOD...B)

Paul Fitz
MAC Treasurer

'Astronomy shows how small and insignificant and rare and precious we all are.' - Contact.

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