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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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Solar Analemma 2016-2019

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Montana
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Solar Analemma 2016-2019

Post by Montana » Sat Dec 21, 2019 3:28 pm

Finally after 4 years of work I have finished my solar analemma. Today, the 21st December it was actually sunny at 11am for me to take the last piece of the puzzle. I feel so happy I have finally finished this. I also finished another hole in April this year. So my final pieces are here in 3 versions. Done and complete :girl:

ImageAnalemma 2019-12-21 annotated version 1 by Alexandra Hart, on Flickr

Image2019-12-21 Analemma 2016-2019 version 2 by Alexandra Hart, on Flickr

Image2019-12-21 Analemma 2016-2019 version 3 by Alexandra Hart, on Flickr

All images were taken at 11am GMT or 12 BST.
I can't tell you how happy I feel :hamster:

Alexandra

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Re: Solar Analemma 2016-2019

Post by pedro » Sat Dec 21, 2019 4:35 pm

Marvellous Alexandra, outstanding work. It took you 3 years to complete the Analemma, well done, you should fell happy and proud

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Montana
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Re: Solar Analemma 2016-2019

Post by Montana » Sat Dec 21, 2019 4:42 pm

Thanks Pedro! 4 years actually, 2016, 2017, 2018 and 2019 :)

Alexandra

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Re: Solar Analemma 2016-2019

Post by Astrophil » Sat Dec 21, 2019 4:45 pm

Wow! Quite an accomplishment. Nicely done, Alexandra.

Phil

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Re: Solar Analemma 2016-2019

Post by rsfoto » Sat Dec 21, 2019 5:33 pm

Hi Alexandra,

Great work and I admire your patience :bow
regards Rainer

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Re: Solar Analemma 2016-2019

Post by JochenM » Sat Dec 21, 2019 6:32 pm

That’s awesome, Alexandra. Quite in awe of your persistence!

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Re: Solar Analemma 2016-2019

Post by ffellah » Sat Dec 21, 2019 7:09 pm

A labor of love, Alexandra. Well done ! It looks magnificent. As they say, patience is a virtue...

Franco :bow :bow

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Re: Solar Analemma 2016-2019

Post by marktownley » Sat Dec 21, 2019 9:18 pm

Outstanding!!!
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Re: Solar Analemma 2016-2019

Post by Montana » Sat Dec 21, 2019 9:53 pm

Thanks guys :hamster: I couldn't believe my luck today, a Saturday and a sunny 21st :hamster:

Alexandra

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Re: Solar Analemma 2016-2019

Post by Carbon60 » Sat Dec 21, 2019 9:56 pm

Excellent, Alexandra. Your persistence has paid off in spades.

Stu.
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Re: Solar Analemma 2016-2019

Post by banjo » Sun Dec 22, 2019 8:01 am

Very very good work Alexandra.
:bow :bow :bow :bow :bow :bow :bow :bow :bow :bow :bow :bow :bow :bow :bow :bow :bow :bow :bow :bow
Paul
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