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Moving forward from solar cycle 24 to 25

Calcium Sun

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Carbon60
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Calcium Sun

Post by Carbon60 » Sat Oct 12, 2019 4:07 pm

We've had so much rain lately it's beyond a joke. However, a brief window of blue opened this afternoon between weather fronts which enabled me to try out my new Lunt B1800 Ca II K module. The conditions weren't ideal for high res work as it was a bit late in the day and, of course, it's a bit late in the season, but I thought it worthwhile to try and I was eager to run with the new setup.

The following images were captured on a Tecnosky 127mm refractor fitted with the B1800 module and a couple of additional filters to reduce the bandwidth: an Omega CaK filter and a Baader K-Line, both fitted in tandem to the nose of my Basler acA1920-155um camera.

First up, a full disk two-pane mosaic using the natural focal length of the scope, shown in mono and colour:

Image20191012_CaK_FD_Mono by Stuart Green, on Flickr

Image20191012_CaK_FD_Colour by Stuart Green, on Flickr

Here's a region captured using a x2.7 Barlow. With the blank disk, I have no idea whereabouts on the disk this was taken.

Image20191012_CaK by Stuart Green, on Flickr

and another region on a x5 powermate

Image20191012_CaK2 by Stuart Green, on Flickr

As you can see, this was pushing it a bit for the conditions. I'm also out of practice with the weather here being so bad in recent weeks.

Thanks for looking.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/


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Re: Calcium Sun

Post by MAURITS » Sat Oct 12, 2019 7:09 pm

Great FD's Stu.
Regards,
Maurits

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Martin_S
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Re: Calcium Sun

Post by Martin_S » Sat Oct 12, 2019 8:37 pm

Nice crisp images Stu.

Martin

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Re: Calcium Sun

Post by eroel » Sun Oct 13, 2019 12:31 am

Stu:
Beautiful CaK shots.
At my place it is cloudy, hazy and rains every day.
Best regards,
Eric.

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Re: Calcium Sun

Post by marktownley » Sun Oct 13, 2019 6:35 am

Nice captures with the new filter there Stu. You got that nice region of cycle 25 faculae with the region at 7 oclock on the full disk. We were sat under the clouds streamer all yesterday, spotted you had blue skies earlier in the day.
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Carbon60
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Re: Calcium Sun

Post by Carbon60 » Sun Oct 13, 2019 3:46 pm

Many thanks, guys. Much appreciated.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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Re: Calcium Sun

Post by Astrophil » Sun Oct 13, 2019 6:52 pm

The new equipment works well. Those are beautiful FD's and the hi-res shows a lot of info. Nicely done, Stu.
I suspect we'll see more from that setup.

Phil

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Re: Calcium Sun

Post by hopskipson » Sun Oct 13, 2019 7:38 pm

Excellent images, I love to see ionized Calcium!

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Re: Calcium Sun

Post by bart1805 » Sun Oct 13, 2019 8:10 pm

Beautiful FD's Stu! How did you manage to make these great mosaics without a visible "stitch"?

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Re: Calcium Sun

Post by MapleRidge » Sun Oct 13, 2019 9:28 pm

Great CaK images Stu...the detail is very sharp considering the conditions but the filter looks to be doing a good job :bow

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Re: Calcium Sun

Post by Montana » Mon Oct 14, 2019 11:26 am

These are fab Stuart, you are certainly getting nice spotty CaK images so the module looks good :) it is a breath of fresh air to see dots rather than dashes in CaK :)

:bow :hamster:

Alexandra

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