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Transit of Mercury in the Spicule Layer. Phil took this great image with his Quantum 6 Scope, Solar Spectrum etalon and PGR Camera.

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large spectroheliograph - India

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highfnum
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large spectroheliograph - India

Post by highfnum » Thu Nov 07, 2019 5:16 pm

cool video

look at item at 1.51 mark

https://www.youtube.com/watch?v=v5QKV2CKazw

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Carbon60
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Re: large spectroheliograph - India

Post by Carbon60 » Fri Nov 08, 2019 7:10 am

A really interesting watch, John. I love the fact that old data, collected on antique equipment, still has a scientific role to play.

Stu.
Lunt LS60THa B1200 PTFT
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Montana
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Re: large spectroheliograph - India

Post by Montana » Fri Nov 08, 2019 10:39 am

My goodness! is your spectroheliograph that big highfnum? I don't think I could fit one in my house :lol:

Alexandra

highfnum
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Re: large spectroheliograph - India

Post by highfnum » Fri Nov 08, 2019 5:00 pm

Naw!
about 60cm long and 3.18Kg
SHGon102419sm.jpg
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Re: large spectroheliograph - India

Post by marktownley » Fri Nov 08, 2019 9:52 pm

I enjoyed the video JOhn
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http://brierleyhillsolar.blogspot.co.uk/
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Re: large spectroheliograph - India

Post by highfnum » Sat Nov 09, 2019 1:14 pm


highfnum
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Re: large spectroheliograph - India

Post by highfnum » Thu Nov 14, 2019 4:13 pm

well shopped around the antique sites
picked up a glass 1922 photo from kodaikanal
cak
kodaidescrp.jpg
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kodaikanalcak1.jpg
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Re: large spectroheliograph - India

Post by highfnum » Thu Nov 14, 2019 4:15 pm

with a little computer magic
kodaikanalcak1c.jpg
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Re: large spectroheliograph - India

Post by marktownley » Thu Nov 14, 2019 6:59 pm

Holy smokes Batman! Looks at all that plage!!!!
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Re: large spectroheliograph - India

Post by highfnum » Thu Nov 14, 2019 11:02 pm

oops! feb 22 1926

george9
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Re: large spectroheliograph - India

Post by george9 » Fri Nov 15, 2019 12:29 am

Thanks. So nice to see that, and neat that you found it. You can look up the daily sunspot numbers for that day: 41 was recorded.

George

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