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Solar Analemma. This outstanding image from Alexandra Hart taken over a period of 4 years charts the midday position of the sun in the sky throughout the year. The north–south component of the analemma results from the change in the Sun's declination due to the tilt of Earth's axis of rotation. The east–west component results from the nonuniform rate of change of the Sun's right ascension, governed by combined effects of Earth's axial tilt and orbital eccentricity.

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halpha sun of September 8th

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stef41
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halpha sun of September 8th

Post by stef41 » Sun Sep 08, 2019 12:57 pm

Good morning, everyone,

a sun this morning before the clouds arrived... but in a milky sky!
At the fs60 with its sm40 double stack, glasspath x1.25, BF10 and zwo178mm around 09h30 UT

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cordially,
stéphane - France

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DeepSolar64
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Re: halpha sun of September 8th

Post by DeepSolar64 » Sun Sep 08, 2019 1:40 pm

Nice! Very calm.
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MAURITS
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Re: halpha sun of September 8th

Post by MAURITS » Sun Sep 08, 2019 1:55 pm

Well done Stephane.
Regards,
Maurits

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Re: halpha sun of September 8th

Post by marktownley » Sun Sep 08, 2019 2:39 pm

Lovely disk Stephane!
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Re: halpha sun of September 8th

Post by eroel » Mon Sep 09, 2019 1:37 am

Stephane, a nice and calm FD.
regards,
Eric.

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