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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 24th of November 2018.

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eroel
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Sol from the 24th of November 2018.

Post by eroel » Sun Nov 25, 2018 7:50 pm

Hi:
Weather has been nice in México City since a week or so, so I took some shots yesterday before lunch.
Used the Solarmax 90-DS-BF30, and the 102mm f/7 Stellarvue refractor with a 4X Baader telecentric and an old Daystar T-Scanner.
Thanks for looking the many shots, probably a bit dark, because I have not adjusted the home observatory monitor since long. :oops:
The 3 part Mosaic looks better in a new window.
Best wishes to all members of the fórum.
Eric.
Mosaico del 24 de noviembre del 2018-Solarmax 90-DS-BF30-1an.jpg
Mosaico del 24 de noviembre del 2018-Solarmax 90-DS-BF30-1an.jpg (1.5 MiB) Viewed 643 times
Mosaico del 24 de noviembre del 2018-Solarmax 90-DS-BF30-1neg.jpg
Mosaico del 24 de noviembre del 2018-Solarmax 90-DS-BF30-1neg.jpg (1.52 MiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-1an.jpg
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-1an.jpg (908.69 KiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-1az.jpg
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-1az.jpg (1.85 MiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-1az-neg.jpg
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-1az-neg.jpg (1.97 MiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-1neg.jpg
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-1neg.jpg (932.23 KiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-2an.jpg
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-2an.jpg (912.56 KiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-2axan.jpg
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-2axan.jpg (1.11 MiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-2neg.jpg
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-2neg.jpg (921.31 KiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-3an.jpg
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-3an.jpg (864.64 KiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-3neg.jpg
Sol de 24 de noviembre del 2018-Solarmax 90-DS-BF30-3neg.jpg (900.35 KiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Stellarvue-Daystar-1an.jpg
Sol de 24 de noviembre del 2018-Stellarvue-Daystar-1an.jpg (1.52 MiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Stellarvue-Daystar-1neg.jpg
Sol de 24 de noviembre del 2018-Stellarvue-Daystar-1neg.jpg (1.25 MiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Stellarvue-Daystar-2an.jpg
Sol de 24 de noviembre del 2018-Stellarvue-Daystar-2an.jpg (1.33 MiB) Viewed 643 times
Sol de 24 de noviembre del 2018-Stellarvue-Daystar-2neg.jpg
Sol de 24 de noviembre del 2018-Stellarvue-Daystar-2neg.jpg (1.06 MiB) Viewed 643 times
SSM.jpg
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Christopher
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Re: Sol from the 24th of November 2018.

Post by Christopher » Sun Nov 25, 2018 8:49 pm

Some real stunners Eric. That AR is looking sharp.
Christopher

"Our imagination is stretched to the utmost, not, as in fiction, to imagine things which are not really there, but just to comprehend those things which 'are' there.". -Feynman

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MapleRidge
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Re: Sol from the 24th of November 2018.

Post by MapleRidge » Sun Nov 25, 2018 11:23 pm

These are excellent images Eric, and show the new AR and proms very nicely :bow

Brian
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Photos: https://www.flickr.com/photos/185395281@N08/albums
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Re: Sol from the 24th of November 2018.

Post by yltansg » Sun Nov 25, 2018 11:53 pm

Hi Eric,

Great images. You have captured many more sharp details that were missing from the images that I took few hours before you. Congrats!

Alfred
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Montana
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Re: Sol from the 24th of November 2018.

Post by Montana » Mon Nov 26, 2018 10:06 am

That's a nice little AR! the cycle isn't dead yet :)
:bow

Alexandra
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Re: Sol from the 24th of November 2018.

Post by marktownley » Mon Nov 26, 2018 10:49 pm

A very nice set 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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eroel
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Re: Sol from the 24th of November 2018.

Post by eroel » Tue Nov 27, 2018 2:43 am

Alexandra and guys, Thanks for looking and commenting.
Apollo, the first image is a Mosaic of 3 parts, taken with the Solarmax 90-DS-BF30 at its prime focus, with a SKYnyx 2-2 camera.
The fourth one was taken with the same scope and camera, but using a Dakin Barlow at the nose of the camera.
Best regards to all,
Eric.
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