Sun in Ha and CaK 25th Aug

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Carbon60
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Sun in Ha and CaK 25th Aug

Post by Carbon60 » Sun Aug 26, 2018 6:54 am

The weather reports were a bit ambiguous as to whether we'd have sunshine or not, so I did what most of us probably do which is to cross fingers and simply look out of the window in the morning. To my delight......blue sky (well, mostly).

I felt confident enough to set up the 250mm RCT in Ha, but after 20 minutes of trying, I couldn't obtain anything worth keeping and all my data using this scope ended up in the bin. I switched to the DS150mm Ha (modified Lunt 35) and things were much better, but again not ideal and the images were lacking bold detail. Nevertheless there were some worth keeping and these are shown below. There are a couple of nice looking active regions (AR2719 and AR2720) with a little bit of crackling activity through AR2720. Some modest proms were on display, which I tried to capture using the same scope. I switched to the DS Lunt 60 Ha for a full disk and then over to my 72mm/f6 with a Lunt CaK B600 module for a full disk in CaK. I also managed a closer view of the active regions in CaK.

Here are the results:

Image20180825_Ha1_FD_mono by Stuart Green, on Flickr

Image20180825_Ha1_FD_Colour by Stuart Green, on Flickr

A closer view of the two active regions (should have flipped the image!)

Image20180825_Ha_AR2719_AR2720 by Stuart Green, on Flickr

and a closer view (cropped image) of AR2720. Not ideal....

Image20180825_Ha_AR2720 by Stuart Green, on Flickr

A couple of proms.... You'll see that my DS tuning was a bit off :shock:

Image20180825_Prom1 by Stuart Green, on Flickr

Image20180825_Prom2 by Stuart Green, on Flickr

Then over to the blue and a CaK full disk

Image20180825_CaK_FD_Mono by Stuart Green, on Flickr

Image20180825_CaK_FD_Colour by Stuart Green, on Flickr

and finally a closer view of the active regions in CaK. This was taken with a 5x TV Powermate on the 72mm refractor.

Image20180825_CaK_AR2719_AR2720 by Stuart Green, on Flickr

That was the end of the session. Clouds rolling in and a busy schedule ended any chance of doing anything more.

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: Sun in Ha and CaK 25th Aug

Post by DJD » Sun Aug 26, 2018 8:25 am

Beautiful set Stu.
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Re: Sun in Ha and CaK 25th Aug

Post by Montana » Sun Aug 26, 2018 11:05 am

What a super active region!! the spots have really developed and look beautiful in both lights :hamster: :bow you are so lucky to get Sun this weekend, the rain seems to be parked over Manchester and Cheshire like a bad rash this weekend and it is dire weather.

Thanks for the beautiful views :)
Alexandra

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Re: Sun in Ha and CaK 25th Aug

Post by Carbon60 » Sun Aug 26, 2018 6:58 pm

Many thanks David and Alexandra. The clear weather was really unexpected. I tried to make the most of it, despite the poor seeing conditions.

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: Sun in Ha and CaK 25th Aug

Post by p_zetner » Mon Aug 27, 2018 4:59 pm

These are very nice, Stu. The high resolution H alpha shots are quite good considering your seeing challenges.

Cheers, Peter.

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Re: Sun in Ha and CaK 25th Aug

Post by Carbon60 » Tue Aug 28, 2018 6:26 am

Many thanks, Peter. The seeing conditions are the limiting factor in most cases, for me. Good seeing is far too infrequent.

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: Sun in Ha and CaK 25th Aug

Post by krakatoa1883 » Tue Aug 28, 2018 7:25 am

Beautiful pictures, Stu, your H alpha picture are really impressive and very sharp.
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Re: Sun in Ha and CaK 25th Aug

Post by xn44 » Tue Aug 28, 2018 8:34 am

Awesome pictures!

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Re: Sun in Ha and CaK 25th Aug

Post by Carbon60 » Tue Aug 28, 2018 8:31 pm

Many thanks, Raf and Pepe. 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: Sun in Ha and CaK 25th Aug

Post by Valery » Wed Aug 29, 2018 1:17 am

Nice set of images, Stu!

Too bad the sun is blank again.


Valery
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Re: Sun in Ha and CaK 25th Aug

Post by ffellah » Wed Aug 29, 2018 11:38 am

A truly excellent set, Stu. Those full disks are magnificent.

Franco :band

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Re: Sun in Ha and CaK 25th Aug

Post by Carbon60 » Fri Aug 31, 2018 5:52 am

Many thanks, Franco.

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: Sun in Ha and CaK 25th Aug

Post by Carbon60 » Tue Sep 04, 2018 6:52 pm

Valery wrote:
Wed Aug 29, 2018 1:17 am
Nice set of images, Stu!

Too bad the sun is blank again.


Valery
Missed this one. Many thanks, Valery.

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: Sun in Ha and CaK 25th Aug

Post by marktownley » Thu Sep 06, 2018 7:06 pm

Missed these Stu! very nice.
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