High Res Chromosphere at 393.4A | Aug 30th 2018

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MalVeauX
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High Res Chromosphere at 393.4A | Aug 30th 2018

Post by MalVeauX » Thu Aug 30, 2018 8:38 pm

Heya,

Didn't have much time today, a storm gave me a moment, but then continued to dump. Florida summers. High resolution in Calcium K of a random surface. The sun has very few features today. But at high resolution there's still tons to look at. 150mm F8 refractor, Baader Blue CCD Filter (ERF1), Chroma 393.4nm Filter (ERF2) and PST CaK Filter with ASI1740MM & 3x Barlow.

Image

Image

Image

And then...
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Very best,

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Re: High Res Chromosphere at 393.4A | Aug 30th 2018

Post by p_zetner » Thu Aug 30, 2018 9:12 pm

Nice images, Marty.
You did a good job capturing the CaK chromospheric texture without introducing any artifacts, as far as I can tell!

Cheers, Peter.

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Re: High Res Chromosphere at 393.4A | Aug 30th 2018

Post by bart1805 » Thu Aug 30, 2018 9:36 pm

Looks fine!
Are you using the new Chroma filter Apollo is referring to?

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Re: High Res Chromosphere at 393.4A | Aug 30th 2018

Post by MalVeauX » Thu Aug 30, 2018 9:41 pm

p_zetner wrote:
Thu Aug 30, 2018 9:12 pm
Nice images, Marty.
You did a good job capturing the CaK chromospheric texture without introducing any artifacts, as far as I can tell!

Cheers, Peter.
Thanks Peter, :bow

One of these days, I'm probably going to bombard you with a lot of questions about building a digital SHG.... My interest in narrowband Calcium simply cannot be achieved with these solid filters.
bart1805 wrote:
Thu Aug 30, 2018 9:36 pm
Looks fine!
Are you using the new Chroma filter Apollo is referring to?
It's a prototype to that filter, yes. The Chroma filter acts as an ERF (the 2nd ERF in the train) but also puts the transmission on 393.4nm within around 10 angstroms or so (I think). The real narrowband filter here is still the PST CaK filter.

Very best,

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Re: High Res Chromosphere at 393.4A | Aug 30th 2018

Post by bart1805 » Thu Aug 30, 2018 10:20 pm

Thanks Marty! Really interesting to follow your CaK adventures!

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Re: High Res Chromosphere at 393.4A | Aug 30th 2018

Post by ffellah » Fri Aug 31, 2018 12:19 am

Very nice results, Marty. I like how you put that 150mm down to work....

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Re: High Res Chromosphere at 393.4A | Aug 30th 2018

Post by krakatoa1883 » Fri Aug 31, 2018 8:02 am

Great images Marty, the PST CaK made the difference. I am surprised of how your refractor seems so well corrected at that WL.
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Re: High Res Chromosphere at 393.4A | Aug 30th 2018

Post by Montana » Fri Aug 31, 2018 9:06 am

Absolute dream CaK images :bow
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Re: High Res Chromosphere at 393.4A | Aug 30th 2018

Post by MalVeauX » Fri Aug 31, 2018 12:43 pm

krakatoa1883 wrote:
Fri Aug 31, 2018 8:02 am
I am surprised of how your refractor seems so well corrected at that WL.
It's just an old Celestron CR150HD Refractor, achromat. Nothing special. *shrug*

But, it works, and it was cheap! :)

Very best,

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Re: High Res Chromosphere at 393.4A | Aug 30th 2018

Post by Carbon60 » Sun Sep 02, 2018 8:03 pm

Lovely CaK images, Marty.

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Re: High Res Chromosphere at 393.4A | Aug 30th 2018

Post by marktownley » Sun Sep 02, 2018 9:01 pm

Yes. Looking good there Marty!
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