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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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Prominence & Surface - Nov 27, 2018

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FMEnage
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Prominence & Surface - Nov 27, 2018

Post by FMEnage » Tue Nov 27, 2018 10:49 am

Hi.
It was cloudy , but a good sized sucker hole tempted me to image the sun today. Sure enough, as soon as i had my gear fully setup, the hole was no more. I waited for another hole and was rewarded for my patience. Seeing, though, was not great at around 2/5. Transparency was at ~2/5 with high clouds. The first photo is a combination of a (subtle) high gamma surface image and a prominence image. The second image is when I'm too lazy (to take a surface image). I'd appreciate if you would let me know which looks better. thanks

equipment used: ASI120MM-S / TMB92 f5.5 / Quark

cheers,
Mike

ImageCapture 14_23_13_g4_ap3724_Drizzle30 wav2 by Mike Enage, on Flickr

ImageCapture 14_23_13_g4_ap3724_Drizzle30 wav by Mike Enage, on Flickr

ImageCapture 14_38_20_g4_ap1398_Drizzle30 imppg4_5 bw by Mike Enage, on Flickr
-Mike

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Re: Prominence & Surface - Nov 27, 2018

Post by ffellah » Tue Nov 27, 2018 12:22 pm

That is one beautiful prominence shot, Mike !

Franco :band

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Re: Prominence & Surface - Nov 27, 2018

Post by Montana » Tue Nov 27, 2018 3:04 pm

Wow! these are fantastic Mike, I like either version of the prominence, both have their plus points
Where abouts are you? nothing but torrential rain in the UK today.
:bow
Alexandra

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Re: Prominence & Surface - Nov 27, 2018

Post by marktownley » Tue Nov 27, 2018 4:02 pm

Yes, great images indeed.
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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: Prominence & Surface - Nov 27, 2018

Post by FMEnage » Tue Nov 27, 2018 4:28 pm

Thanks ! Franco :)

Thank you ! :) Alexandra . I'm in Manila

Thank you ! :) Mark
-Mike

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Re: Prominence & Surface - Nov 27, 2018

Post by MAURITS » Tue Nov 27, 2018 4:44 pm

Great image Mike … for me is the second the best.
Here in Belgium the whole week rain … :roll:
Regards,
Maurits

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Re: Prominence & Surface - Nov 27, 2018

Post by FMEnage » Wed Nov 28, 2018 2:19 am

Thanks ! Maurits
-Mike

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Re: Prominence & Surface - Nov 27, 2018

Post by MapleRidge » Wed Nov 28, 2018 3:42 am

The prom images are very good Mike, and each show the features slightly differently. They are close, but I prefer the pic with the chromosphere masked out as i find the bright disk competes with the prom too much.

Brian
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Re: Prominence & Surface - Nov 27, 2018

Post by FMEnage » Wed Nov 28, 2018 7:07 am

Thank you ! Brian
-Mike

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