New AR12717 August 01 2018 C8 telescope with 214mm DERF
New AR12717 August 01 2018 C8 telescope with 214mm DERF
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
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
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- AR12717-Aug-01-2018-UT-05h-24m-H-a-core.jpg (293.15 KiB) Viewed 526 times
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- AR12717-Aug-01-2018-UT-05h-30m-H-a-BlueWing.jpg (291.24 KiB) Viewed 526 times
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- AR12717-Aug-01-2018-UT-05h-27m-H-a-RedWing.jpg (289.84 KiB) Viewed 526 times
"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.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
- marktownley
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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF
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
These are tremendous Valery, I really enjoyed these

Alexandra


Alexandra
Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF
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".
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.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
- MapleRidge
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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF
Very impressive Valery...especially the granulation lurking in the background of the red wing image
Brian

Brian
Brian Colville
Maple Ridge Observatory
Cambray, ON Canada
Maple Ridge Observatory
Cambray, ON Canada
Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF
Thanks, BrianMapleRidge wrote: ↑Sat Aug 04, 2018 12:22 amVery impressive Valery...especially the granulation lurking in the background of the red wing image![]()
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.
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
Very nice set of images Valery !
Christian Viladrich
Co-author of "Astronomie Planétaire"
http://www.astroplanetes.com/
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Co-author of "Astronomie Planétaire"
http://www.astroplanetes.com/
Co-author of "Astronomie Solaire"
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Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF
Excellent images, Valery. Interesting to see in detail the Ha wings.
Stu.
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/
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: New AR12717 August 01 2018 C8 telescope with 214mm DERF
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.
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.
Re: New AR12717 August 01 2018 C8 telescope with 214mm DERF
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
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.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
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