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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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20181106&20181107 Peaceful Surface

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ThomasHu
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20181106&20181107 Peaceful Surface

Post by ThomasHu » Wed Nov 07, 2018 6:26 am

with QHY5-III174M&178C Cmos Camera
20181106
09_31_30_lapl3_ap141.jpg
09_31_30_lapl3_ap141.jpg (594.87 KiB) Viewed 742 times
20181107
09_44_04_lapl3_ap139.jpg
09_44_04_lapl3_ap139.jpg (419.34 KiB) Viewed 742 times

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marktownley
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Re: 20181106&20181107 Peaceful Surface

Post by marktownley » Wed Nov 07, 2018 6:57 am

A quiet sun but nice disks!
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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: 20181106&20181107 Peaceful Surface

Post by eroel » Wed Nov 07, 2018 3:42 pm

Thomas:
Very nice shots and presentation.
best regards,
Eric.

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MapleRidge
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Re: 20181106&20181107 Peaceful Surface

Post by MapleRidge » Thu Nov 08, 2018 2:05 am

Excellent FD images across all bands Thomas...well done :bow

Brian
Brian Colville

Maple Ridge Observatory

Cambray, ON Canada

Photos: https://www.flickr.com/photos/185395281@N08/albums

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Montana
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Re: 20181106&20181107 Peaceful Surface

Post by Montana » Fri Nov 09, 2018 10:14 am

Terrific shots Thomas, I appreciated all the fine details when enlarged to full size :bow
Alexandra

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Carbon60
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Re: 20181106&20181107 Peaceful Surface

Post by Carbon60 » Sat Nov 10, 2018 8:25 am

A fine collection of solar FDs, Thomas.

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

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ffellah
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Re: 20181106&20181107 Peaceful Surface

Post by ffellah » Sat Nov 10, 2018 12:07 pm

A lovely full disk set, Thomas.

Franco

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