The Sun on May 5 2018 as seen with 280mm aperture.

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Valery
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The Sun on May 5 2018 as seen with 280mm aperture.

Post by Valery »

This morning was a calm with good seeing. I caprtured the sun in CaK and H-a.

The image in CaK was taken first when the seeing didn't start to degrade with the sun going higher in the sky.
Attachments
AR12708 in CaK at 0,087"/pixel
AR12708 in CaK at 0,087"/pixel
AR12708-April-05-2018-C11-06h-46m-UT-CaK.jpg (1.07 MiB) Viewed 2924 times
AR12708 in H-a with a mini-flare
AR12708 in H-a with a mini-flare
AR12708-April-05-2018-C11-06h-52m-UT-H-a.jpg (493.74 KiB) Viewed 2924 times
some activity at the eastern limb
some activity at the eastern limb
April-05-2018-C11-06h-55m-UT-H-a.jpg (494.61 KiB) Viewed 2924 times
April-05-2018-C11-07h-01m-UT-H-a.jpg
April-05-2018-C11-07h-01m-UT-H-a.jpg (378.86 KiB) Viewed 2924 times


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by Derek Klepp »

Excellent set Valery.


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by ffellah »

Excellent resolution, Valery. AR2708 is so tiny....

Franco


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by Montana »

Wow!! what a set!! :bow :bow :bow

Alexandra


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by Valery »

ffellah wrote: Mon May 07, 2018 10:46 am Excellent resolution, Valery. AR2708 is so tiny....

Franco

Yes, Franco, the resolution here at 393nm is about as a 465mm telescope has at H-a 656nm.
A par with 300mm telescope at 430nm G-band.

As soon as my SCT has obtained a corrective optics for 393nm, the images at this wave length became much better and often have a diffraction limited resolution.


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Last edited by Valery on Tue May 08, 2018 4:32 pm, edited 1 time in total.


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by eroel »

Valery:
Super shots.
Best regards,
Eric.


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by Valery »

Thanks to all you.

Valery


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by pedro »

Great shots Valery, nice resolution


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by marktownley »

These are brilliant Valery!


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by Valery »

Thank you, Pedro and Mark.

I hope to make more hig res solar photos in the CaK line.


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by marktownley »

Are you using the SAFIX with the CaK shots Valery?


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by Valery »

marktownley wrote: Mon May 14, 2018 1:38 pm Are you using the SAFIX with the CaK shots Valery?
This time I didn't use the SAFIX. Another corrective lens has been used.


Valery.


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by allhoest »

Once again, great shots!
CS
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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by Carbon60 »

Fabulous, Valery. Wonderful images.

Stu.


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by Valery »

Thank you, Alex and Stu.


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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by allhoest »

Great shot in CaK.
I look forward for your next posts with the new corrective lens.
CS
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Re: The Sun on May 5 2018 as seen with 280mm aperture.

Post by Valery »

allhoest wrote: Sun May 27, 2018 9:14 am Great shot in CaK.
I look forward for your next posts with the new corrective lens.
CS
Alex.
You can see it here: https://www.cloudynights.com/topic/6181 ... try8578847

Unfortunately the seeing was not good at all.


"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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