Solar pores
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Pores, bright points and granulation in AR 12708 (1/2)
GREGOR
Active region 12708 was observed on 8 May 2018 with the High-Resolution Fast Imager (HiFI) at the German 1.5-meter GREGOR telescope (Observatorio del Teide, Tenerife, Spain). A wideband blue-continuum 450.5 nm (FWHM 1.2 nm) interference filter was used. The image was speckle reconstructed from a burst of 100 frames taken within 20 seconds. In order to freeze the seeing, each image was exposed for 7 milliseconds. During the measurements, the GREGOR adaptive optics system was locked on the central pore to partially correct for atmospheric seeing effects.
The image shows a central dark pore and a group of smaller tiny pores (dark concentrations) in the lower part of the image. The overall surface is covered by solar granulation. In between the granules, in the intergranular lanes, sometimes so-called bright points appear.
Image credit: Christoph Kuckein (AIP), Horst Balthasar (AIP), Sergio J. González Manrique (AISAS)