New AR12717 August 01 2018 C8 telescope with 214mm DERF

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Valery
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New AR12717 August 01 2018 C8 telescope with 214mm DERF

Post by Valery » Wed Aug 01, 2018 1:53 pm

Hi all,



An active area AR12717 on the sun, August 1, 2018. This is a dipole - an emergency flux area.

Telescope C8 203mm F/10 SCT equipped with the ARIES 214mm two bands dielectric energy rejection filter (DERF), PST etalon camera Basler 1920-155.

Pictures are in the core of the H-a line and in the red and blue wings of the H-a line. Note that in the red wing of Ha a photospheric granulation is perfectly visible, while in the blue wing it is not visible.

Seeing was average.


Thanks for looking.

Valery
Attachments
AR12717-Aug-01-2018-UT-05h-24m-H-a-core.jpg
AR12717-Aug-01-2018-UT-05h-24m-H-a-core.jpg (293.15 KiB) Viewed 216 times
AR12717-Aug-01-2018-UT-05h-30m-H-a-BlueWing.jpg
AR12717-Aug-01-2018-UT-05h-30m-H-a-BlueWing.jpg (291.24 KiB) Viewed 216 times
AR12717-Aug-01-2018-UT-05h-27m-H-a-RedWing.jpg
AR12717-Aug-01-2018-UT-05h-27m-H-a-RedWing.jpg (289.84 KiB) Viewed 216 times
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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF

Post by marktownley » Wed Aug 01, 2018 11:21 pm

These are excellent images, i like on the last one how you can see the granulation starting to poke through.
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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF

Post by Montana » Thu Aug 02, 2018 9:12 am

These are tremendous Valery, I really enjoyed these :hamster: :bow
Alexandra

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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF

Post by Valery » Thu Aug 02, 2018 3:09 pm

Thanks, Alexandra and Mark

I enjoy the difference in loop prominence appearance between blue and red wing as well as different appearance of the photospheric (RW) and lowest chromospheric (BW) "surfaces".
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.

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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF

Post by MapleRidge » Sat Aug 04, 2018 12:22 am

Very impressive Valery...especially the granulation lurking in the background of the red wing image :bow

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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF

Post by Valery » Sat Aug 04, 2018 3:45 pm

MapleRidge wrote:
Sat Aug 04, 2018 12:22 am
Very impressive Valery...especially the granulation lurking in the background of the red wing image :bow

Brian
Thanks, Brian

When I imaging in H-a I really hate all these lurking photospheric cells network. :)
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.

Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.

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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF

Post by christian viladrich » Sun Aug 05, 2018 7:24 pm

Very nice set of images Valery !
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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF

Post by Carbon60 » Sun Aug 05, 2018 8:30 pm

Excellent images, Valery. Interesting to see in detail the Ha wings.

Stu.
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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF

Post by p_zetner » Mon Aug 06, 2018 2:39 am

Beautiful images, Valery.
The off-band views are very interesting. The enhanced (loop?) absorption in the blue wing seems to be consistent with the picture of prominence gas condensing out of the corona and streaming down to the surface. Do you have an idea of the wavelength offsets in your detuned images?
Cheers, Peter.

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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF

Post by Valery » Mon Aug 06, 2018 3:37 am

Thanks, Christian, Stu and Peter!


Peter, I don't know how much were the detuning in these cases, but my guess is +0,5 to +0,7A red and -0,6 to -0,7A blue.


Valery
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.

Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.

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