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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 13th of January 2020.

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eroel
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Sol from the 13th of January 2020.

Post by eroel » Tue Jan 14, 2020 12:52 am

Hi:
Some FD´s from today in Ha and CaK.
Thanks for looking.
Eric.
Sol del 13 de enero 2020-Solarmax 90-DS-BF30-1pos.jpg
Sol del 13 de enero 2020-Solarmax 90-DS-BF30-1pos.jpg (909.61 KiB) Viewed 107 times
Sol del 13 de enero 2020-Solarmax 90-DS-BF30-1pos-neg.jpg
Sol del 13 de enero 2020-Solarmax 90-DS-BF30-1pos-neg.jpg (980.03 KiB) Viewed 107 times
Sol del 13 de enero 2020-Solarmax 90-DS-BF30-1neg-pos.jpg
Sol del 13 de enero 2020-Solarmax 90-DS-BF30-1neg-pos.jpg (1022.29 KiB) Viewed 107 times
Sol del 13 de enero 2020-Meade-CaK-PSTmod-1pos.jpg
Sol del 13 de enero 2020-Meade-CaK-PSTmod-1pos.jpg (859.42 KiB) Viewed 107 times
Sol del 13 de enero 2020-Meade-CaK-PSTmod-1pos-neg.jpg
Sol del 13 de enero 2020-Meade-CaK-PSTmod-1pos-neg.jpg (951.76 KiB) Viewed 107 times
Sol del 13 de enero 2020-Meade-CaK-PSTmod-1neg-pos.jpg
Sol del 13 de enero 2020-Meade-CaK-PSTmod-1neg-pos.jpg (964.29 KiB) Viewed 107 times

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rsfoto
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Re: Sol from the 13th of January 2020.

Post by rsfoto » Tue Jan 14, 2020 1:06 am

Hola Eric,

Great Calcium K images as well as the H-alpha

saludos
regards Rainer

Observatorio Real de 14 San Luis Potosi Mexico

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Re: Sol from the 13th of January 2020.

Post by Astrophil » Tue Jan 14, 2020 2:05 am

Super disks and great proms, Eric.

Phil

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Re: Sol from the 13th of January 2020.

Post by JochenM » Tue Jan 14, 2020 4:58 am

Good stuff, Eric.

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Re: Sol from the 13th of January 2020.

Post by marktownley » Tue Jan 14, 2020 6:07 am

Excellent disks Eric!
Image
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 13th of January 2020.

Post by Carbon60 » Tue Jan 14, 2020 6:51 am

Beautiful, Eric. Very nice FDs.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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Re: Sol from the 13th of January 2020.

Post by Montana » Tue Jan 14, 2020 10:11 am

A lovely collection Eric, always a good view :hamster: :bow

Alexandra

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Re: Sol from the 13th of January 2020.

Post by MAURITS » Tue Jan 14, 2020 11:18 am

Lovely images Eric.
Regards,
Maurits

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Re: Sol from the 13th of January 2020.

Post by MalVeauX » Tue Jan 14, 2020 2:21 pm

Great discs Eric, love the Cak!

Very best,

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