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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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Today's SUN (20180526) | FDs (3 lights)

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pedro
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Today's SUN (20180526) | FDs (3 lights)

Post by pedro » Sat May 26, 2018 1:52 pm

Today's SUN (20180526) | FDs (3 lights)

WEBLINK:
http://re.apaaweb.com/sun_h_alpha_2018-05.html

The Takahashi EM400 is a GREAT mount (fantastic tracking accuracy)

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IMAGING SETUPS (TAKAHASHI EM400)

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IMAGING SETUPS (TAKAHASHI EM400)

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SUN (20180526) WL (10:00 UTC). TV101 F/5.4, 2" Baader ceramic herchel wedge, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180526) CaK (10:00 UTC). TV101 F/5.4, LUNT 1200 CaK Module, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180526) H-alpha DISK (10:00 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180526) H-alpha DISK & PROMS (08:00 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180526) H-alpha DISK & PROMS (08:00 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180526) CaK PROMS (08:00 UTC). TV101 F/5.4, LUNT 1200 CaK Module, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180526) WL, CaK & H-alpha (08:00 UTC). TV101 F/5.4, LUNT 1200 CaK Module, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

Derek Klepp
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Re: Today's SUN (20180526) | FDs (3 lights)

Post by Derek Klepp » Sun May 27, 2018 6:08 am

Thanks Pedro good to see a little action.

allhoest
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Re: Today's SUN (20180526) | FDs (3 lights)

Post by allhoest » Sun May 27, 2018 9:00 am

Thank Pedro.

We don't need to go to spaceweather to figure the sun activity. You have a wonderful survey!

CS
Alex


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Re: Today's SUN (20180526) | FDs (3 lights)

Post by marktownley » Mon May 28, 2018 4:09 pm

A lovely set of images there Pedro!
Image
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: Today's SUN (20180526) | FDs (3 lights)

Post by eroel » Mon May 28, 2018 11:21 pm

Pedro:
Super as usual.
Abrazo,
Eric.


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Re: Today's SUN (20180526) | FDs (3 lights)

Post by Montana » Tue May 29, 2018 1:50 pm

These are great Pedro, 4 ARs on the disc!! must be a record for the year :hamster:

Alexandra


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