Solar Activity February 10, 2023 - a photo on Flickriver

Solar Activity February 10, 2023

To photograph sunspots a special lens filter and protective eyewear is required. It can be done, as shown in these photographs with a telephoto lens. I sat on a chair in my front yard, wearing my certified, protective eyewear, I used a EF100-400mm f/4.5-5.6L ISUSM +2.0x extender. I handheld my Canon EOS 7D camera and Canon lens for all shots. The only editing was to sharpen the contrast and crop the shots.
The sun activity was moderate today, with 20 flares, the largest was produced by AR3213.

"Sunspots form from concentrations of magnetic fields inside the sun. They build up over time inside the sun and may become buoyant and rise to the surface. This buildup happens over the 11-year solar cycle. And the current cycle – Solar Cycle 25 – is now heading toward a peak in the middle of this decade."
earthsky.org/sun/sun-activity-solar-flare-cme-aurora-upda...
Location: Orland Park, Illinois, USA

"Sunspots are phenomena on the Sun's photosphere that appear as temporary spots that are darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic flux that inhibit convection. Sunspots appear within active regions, usually in pairs of opposite magnetic polarity. Their number varies according to the approximately 11-year solar cycle.

Individual sunspots or groups of sunspots may last anywhere from a few days to a few months, but eventually decay. Sunspots expand and contract as they move across the surface of the Sun, with diameters ranging from 16 km (10 mi) to 160,000 km (100,000 mi). Larger sunspots can be visible from Earth without the aid of a telescope. They may travel at relative speeds, or proper motions, of a few hundred meters per second when they first emerge." (Wikipedia)

Taken on: February 12, 2023

Tags:

solar

activity

sunspots

February 10, 2023

viewed

Orland

Park

Cook

County

Illinois

USA

Solar Cycle 25

bright

blinding

brightness

caution-special-lenses-filter

required

93-million

miles-away

150-million-killometers

average-distance-from-earth

Canon

EOS

EF100-400mm

f/4.5-5.6L

USM

+2.0x

equipment-used

handheld « less

Sets appears in: • Fun With Editing • In Explore more » • Sun and Sunspots « less

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