Da qualche giorno, l'intensa attività della nostra Stella, rende sorprendente anche il nostro amato contesto radiantistico. Si passa dalla piacevolissima propagazione di ieri sera (ottimi i DX in bande basse), al radio black out di stanotte alle 4 circa, in cui l'HF ha crashato per circa 10 minuti.
Interessante è l'osservazione a luce bianca, che rende l'idea di enormità delle macchie solari
Sole in attività odierna
Sole in attività odierna
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- Schermata 2014-02-04 alle 19.02.15.png (206.52 KiB) Visto 2681 volte
IN3QDW Gian (previous call IZ6ITH)
Presidente della Sezione Speciale Autonoma di Trento
cell. ERA 349 2170060
skype: in3dqw
email: in3dqw@gmail.com
Presidente della Sezione Speciale Autonoma di Trento
cell. ERA 349 2170060
skype: in3dqw
email: in3dqw@gmail.com
Re: Sole in attività odierna
notizia fresca:
First Moments of a Solar Flare in Different Wavelengths of Light
On Feb. 24, 2014, the sun emitted a significant solar flare, peaking at 7:49 p.m. EST. NASA's Solar Dynamics Observatory (SDO), which keeps a constant watch on the sun, captured images of the event. These SDO images from 7:25 p.m. EST on Feb. 24 show the first moments of this X-class flare in different wavelengths of light -- seen as the bright spot that appears on the left limb of the sun. Hot solar material can be seen hovering above the active region in the sun's atmosphere, the corona.
Solar flares are powerful bursts of radiation, appearing as giant flashes of light in the SDO images. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel.
http://www.nasa.gov/content/first-momen ... -of-light/
First Moments of a Solar Flare in Different Wavelengths of Light
On Feb. 24, 2014, the sun emitted a significant solar flare, peaking at 7:49 p.m. EST. NASA's Solar Dynamics Observatory (SDO), which keeps a constant watch on the sun, captured images of the event. These SDO images from 7:25 p.m. EST on Feb. 24 show the first moments of this X-class flare in different wavelengths of light -- seen as the bright spot that appears on the left limb of the sun. Hot solar material can be seen hovering above the active region in the sun's atmosphere, the corona.
Solar flares are powerful bursts of radiation, appearing as giant flashes of light in the SDO images. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel.
http://www.nasa.gov/content/first-momen ... -of-light/
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- Schermata 2014-02-25 alle 20.40.49.jpg (123.89 KiB) Visto 2664 volte
IN3QDW Gian (previous call IZ6ITH)
Presidente della Sezione Speciale Autonoma di Trento
cell. ERA 349 2170060
skype: in3dqw
email: in3dqw@gmail.com
Presidente della Sezione Speciale Autonoma di Trento
cell. ERA 349 2170060
skype: in3dqw
email: in3dqw@gmail.com
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