viewing a prom with different tools

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Edmund 4 inch and combo quark

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with open slit spectroscope

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Capture 2023-05-18T11_19_36havarsltsm.jpg (149.12 KiB) Viewed 505 times

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SHG
prom is on right.

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Capture 2023-05-18T15_51_42haapo80250_shift=0_protusJs.jpg (108.1 KiB) Viewed 504 times

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drawing with SPV coronagraph and 60mm unitron
i gave up with camera even 3000 X 3000 chip to small!

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i forgot tilter scope -- oh well!

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what my SPV build looks like

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[DeepSolar64]

WoW, I like all the different views. Are there any chance of seeing the corona itself, with the coronagraph if you are in a high dry place with really clear deep blue skies? Or is it designed more as a prominence viewer?

And you have a Unitron! Back in the late 1970's and early 1980's I really wanted one of those. Heck, I would still love one!

James

[marktownley]

These are great John!

[Montana]

Absolutely wonderful, from filter to SHG and to prominence / coronagraph, the full range. What a thrill to see these and especially the sketch. I must get mine operational again, I wish I had more time to image and sketch.



Alexandra

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deepsolar4
right now I can do only Ha and Hb(about 10% of proms can be seen with Hb version)
to do corona you need very narrow iron line filters 1800-3600 dollars
a few people have done this
and yes you need to get up to about 1 mile above sea level

see link this was done about 2hrs from where I live

https://skyandtelescope.org/online-gall ... ronagraph/

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Montana
I found this
I assume its you

https://solarnutcase.livejournal.com/18374.html
you are lucky to have one

yes they are fun to use
closest thing to solar eclipse (but no corona )

need to study how they take photos

[highfnum]

almost forgot
somebody managed to capture corona (to some extent) with SHG
this is similar to HeD3 processing.
you need to do 2 images and subtract.
I believe you still need to do this at higher altitude also
this is more advanced stuff
I mentioned Hed3 at zoom meeting with Doug Smith
it known as shallow line processing cause these things are very faint.
i hope one day to do this
i would need to be good at HeD3 images before attempting iron line.
this would be a cheaper than coronagraph.
my guess 4-6k with home built coronagraph.

[DeepSolar64]

deepsolar4
right now I can do only Ha and Hb(about 10% of proms can be seen with Hb version)
to do corona you need very narrow iron line filters 1800-3600 dollars
a few people have done this
and yes you need to get up to about 1 mile above sea level

see link this was done about 2hrs from where I live

https://skyandtelescope.org/online-gall ... ronagraph/

I think George has posted corona images on SolarChat before. The other is Klaus. Both work together. Amateur Coronagraphy is a frontier few amateurs pursue. It's certainly fertile new ground for anyone with the money, the building skills and the location to do it.

JP

[rsfoto]

Very interesting