A 19th century PST

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highfnum
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A 19th century PST

Post by highfnum » Fri Jun 21, 2019 6:09 pm

in honor of Higgins prom observation 150 years ago (feb 19 I believe)
i built a solar spectroscope with variable slit to do same


40mm scope just like PST


how come they did not make something like this then?
final19centpromB.jpg
final19centpromB.jpg (118.51 KiB) Viewed 577 times

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marktownley
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Re: A 19th century PST

Post by marktownley » Sat Jun 22, 2019 8:29 am

A lovely creation!
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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Merlin66
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Re: A 19th century PST

Post by Merlin66 » Sat Jun 22, 2019 3:08 pm

Browning made many solar spectroscopes which could be mounted on any refractor to allow observation of the proms using Huggin’s method.
More like a Quark than a pst.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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DSobserver
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Re: A 19th century PST

Post by DSobserver » Mon Jun 24, 2019 11:41 am

Nice!

Can you describe how you manage it?

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Merlin66
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Re: A 19th century PST

Post by Merlin66 » Mon Jun 24, 2019 12:19 pm

I have some illustrations back home.....
Basically a multi prism spectroscope with adjustable slit mounted on an excentric rotating adaptor which fitted the telescope.
The adaptor could be rotated to bring the slit onto the edge of the Sun and when proms were found, the slit opened to allow a full view of them.
Some details in “Imaging Sunlight”, p 60.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

highfnum
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Re: A 19th century PST

Post by highfnum » Mon Jun 24, 2019 10:08 pm

my scope rotates up to about 200 degrees

then it has a variable slit
i use eq mount with goto to position
slit and track

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