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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 10th of February 2019.

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eroel
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Sol from the 10th of February 2019.

Post by eroel » Mon Feb 11, 2019 1:50 am

Hi:
Nice and sunny day, so had a chance to use the 102mm f/9 Meade refractor with the CaK-PST mod, as also the Solarmax 90-DS.
It was hard to get the very dim extensión of the biggest protuberance.
Thanks for looking.
Eric.
Sol del 10 de febrero del 2019-Meade-CaK-PSTmod-1an.jpg
Sol del 10 de febrero del 2019-Meade-CaK-PSTmod-1an.jpg (820 KiB) Viewed 396 times
Sol del 10 de febrero del 2019-Meade-CaK-PSTmod-1neg.jpg
Sol del 10 de febrero del 2019-Meade-CaK-PSTmod-1neg.jpg (873.93 KiB) Viewed 396 times
Sol del 10 de febrero del 2019-Meade-CaK-PSTmod-3an.jpg
Sol del 10 de febrero del 2019-Meade-CaK-PSTmod-3an.jpg (803.75 KiB) Viewed 396 times
Sol del 10 de febrero del 2019-Meade-CaK-PSTmod-3neg.jpg
Sol del 10 de febrero del 2019-Meade-CaK-PSTmod-3neg.jpg (829.39 KiB) Viewed 396 times
Sol del 10 de febrero del 2019-Solarmax 90-DS-BF30-1an.jpg
Sol del 10 de febrero del 2019-Solarmax 90-DS-BF30-1an.jpg (1008.53 KiB) Viewed 396 times
Sol del 10 de febrero del 2019-Solarmax 90-DS-BF30-1neg.jpg
Sol del 10 de febrero del 2019-Solarmax 90-DS-BF30-1neg.jpg (1003.88 KiB) Viewed 396 times
Sol del 10 de febrero del 2019-Solarmax 90-DS-BF30-2an.jpg
Sol del 10 de febrero del 2019-Solarmax 90-DS-BF30-2an.jpg (983.93 KiB) Viewed 396 times
Sol del 10 de febrero del 2019-Solarmax 90-DS-BF30-2neg.jpg
Sol del 10 de febrero del 2019-Solarmax 90-DS-BF30-2neg.jpg (992.25 KiB) Viewed 396 times
Mosaico solar del 10 de febrero del 2019-Solarmax 90-DS-BF30-1an.jpg
Mosaico solar del 10 de febrero del 2019-Solarmax 90-DS-BF30-1an.jpg (1.7 MiB) Viewed 396 times
Mosaico solar del 10 de febrero del 2019-Solarmax 90-DS-BF30-1neg.jpg
Mosaico solar del 10 de febrero del 2019-Solarmax 90-DS-BF30-1neg.jpg (1.79 MiB) Viewed 396 times

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MAURITS
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Re: Sol from the 10th of February 2019.

Post by MAURITS » Mon Feb 11, 2019 9:37 am

Very nice done Eric ...
Regards,
Maurits

Vista del Cielo Observatory

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Montana
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Re: Sol from the 10th of February 2019.

Post by Montana » Mon Feb 11, 2019 1:08 pm

Wow! that is a Bunsen burner prominence :hamster: nice selection of full discs Eric :bow

Alexandra

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eroel
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Re: Sol from the 10th of February 2019.

Post by eroel » Mon Feb 11, 2019 2:18 pm

Alexandra and Maurits, thanks for looking and commenting.
BTW, excuse me for not orienting the FD´s correctly, but I forgot that I took the shots early in the morning, so the scopes were on the West side, when this happens, I need to flip and mirror the images. :oops:
Have a nice and sunny week.
Eric.

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Re: Sol from the 10th of February 2019.

Post by MapleRidge » Mon Feb 11, 2019 5:55 pm

Superb FD's as you always post Eric, and the prom looks amazing. Well done :bow

Brian
Brian Colville

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Re: Sol from the 10th of February 2019.

Post by David_The_Bears_Fan » Mon Feb 11, 2019 6:40 pm

Great set Eric. Sunny here today but I had to work :mad:
David

Kit: Skywatcher Evostar 120 on Celestron CG-4 / Coronado PST / Lunt B1200 Ca-K Module / Lacerta Herschel Wedge/ Canon 1100D & 77D / ZWO ASI178MM & 120MC-S / QHY5-II Mono

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Re: Sol from the 10th of February 2019.

Post by Carbon60 » Mon Feb 11, 2019 9:29 pm

Amazing FDs, Eric. Superb CaKs in particular.

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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