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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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Sol from the 15th of January 2020.

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eroel
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Sol from the 15th of January 2020.

Post by eroel » Thu Jan 16, 2020 4:34 am

Hi:
A set of CaK and Ha FD´s taken with the 102mm f/9 Meade with a CaK PSTmod, and the Solarmax 90-DS.
Thanks for looking.
Eric.
Sol del 15 de enero 2020-Meade-CaK-PSTmod-2pos.jpg
Sol del 15 de enero 2020-Meade-CaK-PSTmod-2pos.jpg (739.98 KiB) Viewed 80 times
Sol del 15 de enero 2020-Meade-CaK-PSTmod-1pos-neg.jpg
Sol del 15 de enero 2020-Meade-CaK-PSTmod-1pos-neg.jpg (974.9 KiB) Viewed 80 times
Sol del 15 de enero 2020-Meade-CaK-PSTmod-1neg-pos.jpg
Sol del 15 de enero 2020-Meade-CaK-PSTmod-1neg-pos.jpg (840.14 KiB) Viewed 80 times
Sol del 15 de enero 2020-Solarmax 90-DS-BF30-1pos.jpg
Sol del 15 de enero 2020-Solarmax 90-DS-BF30-1pos.jpg (934.43 KiB) Viewed 80 times
Sol del 15 de enero 2020-Solarmax 90-DS-BF30-1neg-pos.jpg
Sol del 15 de enero 2020-Solarmax 90-DS-BF30-1neg-pos.jpg (1.02 MiB) Viewed 80 times
Sol del 15 de enero 2020-Solarmax 90-DS-BF30-1pos-neg.jpg
Sol del 15 de enero 2020-Solarmax 90-DS-BF30-1pos-neg.jpg (959.31 KiB) Viewed 80 times

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JochenM
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Re: Sol from the 15th of January 2020.

Post by JochenM » Thu Jan 16, 2020 5:44 am

Looking good!

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Re: Sol from the 15th of January 2020.

Post by marktownley » Thu Jan 16, 2020 5:57 am

Very nice results Eric
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http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Re: Sol from the 15th of January 2020.

Post by Martin_S » Thu Jan 16, 2020 9:02 am

Nice Imaging Eric, your Cak images are spot on.

Martin

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Re: Sol from the 15th of January 2020.

Post by Montana » Thu Jan 16, 2020 12:13 pm

Lovely full discs Eric, I was noticing some dark filament like objects in the CaK but they don't seem to replicate in the Halpha. Maybe one of those interesting features that Apollo was talking about (I can't remember what he called them).

Alexandra

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Re: Sol from the 15th of January 2020.

Post by eroel » Thu Jan 16, 2020 12:35 pm

Alexandra and guys, thanks for looking and commenting.
Alexandra, yes I also remember Apollo talking about some diagonal line features. like the 3 or more diagonal parallel lines of small white spots on the left next to the big ecuatorial active zone.
Good day,
Eric.
Last edited by eroel on Thu Jan 16, 2020 3:39 pm, edited 1 time in total.


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Re: Sol from the 15th of January 2020.

Post by rsfoto » Thu Jan 16, 2020 4:16 pm

Hola Eric,

Muy bien, muy bien

saludos Rainer
regards Rainer

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Re: Sol from the 15th of January 2020.

Post by Astrophil » Thu Jan 16, 2020 5:58 pm

Always exceptional images! Thanks, Eric.

Phil

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