Speckle image reconstruction of solar features

Details Speckle image reconstruction of solar features Speckle image reconstruction of solar features

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...271l..37s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 271, Aug. 1, 1983, p. L37-L40.

Astronomy and Astrophysics

Astrophysics

20

Image Reconstruction, Solar Magnetic Field, Sunspots, Charge Injection Devices, Interferometry, Penumbras, Power Spectra, Speckle Patterns

Scientific paper

Speckle image reconstruction procedures have been applied to 5 x 6 arcsec patches of the solar surface. Data were recorded with a CID (charge-injection device) sensor. This detector has the wide dynamic range and linearity required to record accurately the extremely low contrast speckle that occurs for extended objects such as the sun. Reconstructed images of spot penumbrae and of pores show evidence for detail at scales as fine as 0.11 arcsec, despite prevailing seeing conditions of 1 - 2 arcsec. The finest structures appear to be embedded in penumbral filaments. Coarser sub-arcsecond detail appears in some, but not all, of the pores studied. The presence of such fine, presumably magnetically controlled detail suggests that much can be learned from high-resolution solar surface imaging from space.

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