Hydrogen-alpha FD 16th Feb 2021

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Carbon60
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Hydrogen-alpha FD 16th Feb 2021

Post by Carbon60 » Tue Feb 16, 2021 4:54 pm

Another one of those frustrating sessions with mostly cloud cover and only small, elusive gaps, but I really wanted to try my new Coronado BF15 on my DS Lunt 60. It took almost an hour of patient waiting and a few aborted attempts before I managed to capture four panes to build up the mosaic

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Given the conditions and the rush to image in the gaps (no real time to finesse the tuning) I was really quite pleased with the final result and performance of the new BF. Overall, very promising for when there's a better weather day.

Processed in mono and colour

Image20210216_Ha_FD_mono by Stuart Green, on Flickr

Image20210216_Ha_FD_colour by Stuart Green, on Flickr

It's now raining...

Thanks for looking.

Stu.
Last edited by Carbon60 on Tue Feb 16, 2021 6:27 pm, edited 1 time in total.


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Re: Hydrogen-alpha FD 16th Feb 2021

Post by marktownley » Tue Feb 16, 2021 4:58 pm

That came out really well Stu! That BF15 seems to do the job nicely.


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Re: Hydrogen-alpha FD 16th Feb 2021

Post by Carbon60 » Tue Feb 16, 2021 5:01 pm

Thanks, Mark.
I would never have managed to capture such images under these conditions with the Lunt BF.

Stu.


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More images at http://www.flickr.com/photos/solarcarbon60/

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Re: Hydrogen-alpha FD 16th Feb 2021

Post by marktownley » Tue Feb 16, 2021 5:02 pm

It's surprising the difference these small changes can make. I've been dodging rain all day myself, looks like it's going to be the theme for the rest of the week.


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Re: Hydrogen-alpha FD 16th Feb 2021

Post by DeepSolar64 » Tue Feb 16, 2021 5:45 pm

Very nice Stu! I was able to get a few of those filaments today visually.


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Re: Hydrogen-alpha FD 16th Feb 2021

Post by EGRAY_OBSERVATORY » Tue Feb 16, 2021 9:15 pm

Well done Stu, for a quiet Sun, you certainly showed the filaments very well.

Cheers
Terry



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Re: Hydrogen-alpha FD 16th Feb 2021

Post by Stardust5858 » Tue Feb 16, 2021 10:09 pm

Lovely Stu, well done and thanks for sharing.


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Re: Hydrogen-alpha FD 16th Feb 2021

Post by MapleRidge » Tue Feb 16, 2021 11:29 pm

Nice sharp image Stu...well done :bow

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Re: Hydrogen-alpha FD 16th Feb 2021

Post by ffellah » Wed Feb 17, 2021 11:22 am

Very nice images, Stu. Not much to do here between rain, snow, cold, etc.

Franco



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Re: Hydrogen-alpha FD 16th Feb 2021

Post by Carbon60 » Wed Feb 17, 2021 4:39 pm

Many thanks, everyone.

I can’t wait for better weather and a more active Sun.

Stu.


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Re: Hydrogen-alpha FD 16th Feb 2021

Post by Montana » Wed Feb 17, 2021 6:44 pm

I swear there is much more contrast on this disc shot than normal, a good side by side test would be very interesting. Nice work :bow :hamster:

Alexandra



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Re: Hydrogen-alpha FD 16th Feb 2021

Post by Carbon60 » Thu Feb 18, 2021 7:08 am

Montana wrote:
Wed Feb 17, 2021 6:44 pm
I swear there is much more contrast on this disc shot than normal, a good side by side test would be very interesting. Nice work :bow :hamster:

Alexandra
Hi Alexandra,

Absolutely. This was the main finding. These are not composite images as the disk and proms were captured at the same time. Usually I have to knock down the gamma setting to bring out the proms, but at the cost of losing contrast on the disk. Here I used the default setting (1 on Genika Astro), which happily showed the proms and disk features quite well.

When eventually we get another sunny morning, I'll be able to refine the tuning and hone the settings to obtain an optimal image. Can't wait.

Some more solar activity would be nice too.

Pouring down again here this morning :(

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/

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