10-13-2018 Ar2724 - Triple iron arch's

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TheSkyBurner
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10-13-2018 Ar2724 - Triple iron arch's

Post by TheSkyBurner » Sat Oct 13, 2018 10:55 pm

Testing a new filter in Tuscon, i made a note that 2724 contains some real long arch iron filaments. (ferrets)
you either see them, or you dont ;)

First arch just to the right of the centered sunspot core and is a double/triple iron Arch that resembles a sine wave.

Another is starting at the center sunspot's first arch; It is going down at about 6 o'clock where it forms another arch to avoid the denser flocculus then proceeds to extend all the way to the southern limb
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Valery
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Re: 10-13-2018 Ar2724 - Triple iron arch's

Post by Valery » Sun Oct 14, 2018 2:50 am

What this (this sample) filter exact data? What is the telescope and full imaging train?

I see the arc in the center near the spot. But it is difficult to say what the real nature of it.
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Re: 10-13-2018 Ar2724 - Triple iron arch's

Post by MalVeauX » Sun Oct 14, 2018 3:53 am

Interesting.

I'm always curious how filaments in various wavelengths compare as filaments seen from above, hovering over the surface, compared to the same filaments on a limb with the void of space behind them, in various wavelengths, and why it's so hard to see them there when the should likely be more easy to spot and image, compared to a filament on the surface.

393nm or 540nm?

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Re: 10-13-2018 Ar2724 - Triple iron arch's

Post by TheSkyBurner » Sun Oct 14, 2018 4:13 am

Valery wrote:
Sun Oct 14, 2018 2:50 am
What this (this sample) filter exact data? What is the telescope and full imaging train?

I see the arc in the center near the spot. But it is difficult to say what the real nature of it.
This is the "ferret filter"
I can show you the 5 angstrom area area it covers, but I cannot reveal filter information at this time.

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I am still with meade 90mm x 800mm achromat telescope. But Now with a four element negative zeiss optic, at prime -100mm. Then a x125mm kg3 achro 30mm away from that zeiss. I also have a second x125mm kg3 achro 100mm away from the first.

F1,F2 are two filters between the two kg3 achros, they are super collimated.

To confirm their legitimacy, i rotated the camera for proper solar orientation and re-sampled the data.

Ferret arch's are very real, and highly ordered to a magnetic field!
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You can find the magnetic fields loops associated with this area on SDO, this information is later than my image but it gives you an idea that these loop structures are following these curves . https://sdo.gsfc.nasa.gov/assets/img/la ... 00pfss.jpg
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Re: 10-13-2018 Ar2724 - Triple iron arch's

Post by marktownley » Sun Oct 14, 2018 8:17 am

Very good Apollo! Ferrets are definitely real, I see them with my CaK setup too.
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