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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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May the 6th Solar Activity

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David_The_Bears_Fan
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May the 6th Solar Activity

Post by David_The_Bears_Fan » Mon May 06, 2019 11:08 am

Early start this morning, looked a bit of a bust when I got up to clouds but they broke around 7:30. Not the best conditions but can't be picky!

White light showed some nice detail including some pores.
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Then on to some Ca-K, some proms and some flaring going on in the AR
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Grabbed the FD starting with the AR and then came back to the AR to find a little bit of flaring going on
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Up close with the AR @2500mm focal length
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And then back to 1000mm for proms
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David

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Re: May the 6th Solar Activity

Post by marktownley » Mon May 06, 2019 2:57 pm

That's a very nice set of images David. Just cloud for me today sadly.
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Re: May the 6th Solar Activity

Post by MAURITS » Mon May 06, 2019 3:00 pm

Indeed, very nice images David.
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Re: May the 6th Solar Activity

Post by robert » Mon May 06, 2019 7:44 pm

Really nice images. Sharp CaK and proms.
(Might need flipping vertically to be north up to match tiltsun?)
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Re: May the 6th Solar Activity

Post by krakatoa1883 » Mon May 06, 2019 7:48 pm

Great CaK images, David, nice limb details!
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Re: May the 6th Solar Activity

Post by ffellah » Mon May 06, 2019 9:05 pm

Truly excellent work, David !

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Re: May the 6th Solar Activity

Post by banjo » Tue May 07, 2019 6:12 am

Very Great CaK images, David,bravo!!!!! :bow :bow :bow :bow
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Re: May the 6th Solar Activity

Post by Montana » Tue May 07, 2019 9:10 am

I do like the little trail of pores curving away from the main spot, that is lovely little detail. Great images David :bow :hamster:

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Re: May the 6th Solar Activity

Post by mattwastell » Tue May 07, 2019 9:33 am

Hi David
That is a great series - I had my first session on Monday - saw some of the little pops & fluff - glad to see the pop on your CaK!
Matt Wastell



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