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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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3 videos (solar activity 2013/2015)

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pedro
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3 videos (solar activity 2013/2015)

Post by pedro » Tue Nov 27, 2018 4:49 pm

Check out three videos with FD WL & CaK images (when the sun was active). Hope you like it


Pedro RE' | Solar Astrophotography (2015)
Full Disk WL Ca-K images
TV 101 F/5.4, IKARUS 80 F/7
PGR Grasshopper GS3-U3-28S5M-C


Pedro RE' | Solar Astrophotography (2014)
Full Disk WL Ca-K images
TV 101 F/5.4, IKARUS 80 F/7
PGR Grasshopper GS3-U3-28S5M-C


Pedro RE' | Solar Astrophotography (2013)
Full Disk WL Ca-K images
TV 101 F/5.4, IKARUS 102 F/7
DMK51/PGR Grasshopper GS3-U3-28S5M-C

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Re: 3 videos (solar activity 2013/2015)

Post by marktownley » Tue Nov 27, 2018 9:46 pm

Those were the days!
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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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Re: 3 videos (solar activity 2013/2015)

Post by FMEnage » Wed Nov 28, 2018 2:22 am

great videos! Pedro
-Mike

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Re: 3 videos (solar activity 2013/2015)

Post by MapleRidge » Wed Nov 28, 2018 3:33 am

These animations are top notch Pedro, and nice to see what an active solar disk looks like ;)

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Re: 3 videos (solar activity 2013/2015)

Post by Montana » Wed Nov 28, 2018 10:22 am

A nice bit of reminiscing :) where does time go these days?

Alexandra


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pedro
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Re: 3 videos (solar activity 2013/2015)

Post by pedro » Wed Nov 28, 2018 11:31 am

Here's another video FD WL (2012)


Pedro RE' | Solar Astrophotography (2012)
Full Disk WL images (March/December 2012)
AstroTech EDT 80mm F/7, BORG 76mm F/10, TV 101 F/5.4
DMK41/DMK51

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