High Resolution Time Series of Narrowband Ca IIK Images in the Chromosphere

Details High Resolution Time Series of Narrowband Ca IIK Images in the Chromosphere High Resolution Time Series of Narrowband Ca IIK Images in the Chromosphere

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..354..284w&link_type=abstract

Solar MHD Theory and Observations: A High Spatial Resolution Perspective ASP Conference Series, Vol. 354, Proceedings of the Con

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We have observed a region of quiet Sun near disk center with the Vacuum Tower Telescope (VTT) of the Kiepenheuer-Institut für Sonnenphysik at the Observatorio del Teide, Tenerife, Spain in April 2005 in several wavelengths. Observations were made at the Ca II K line at 393.3 nm, using a Lyot filter with a bandwidth of 30 ± FWHM, centered at the K_{2v} emission peak; at the Hα line at 656.3 nm, using a Lyot filter (25 ± FWHM) centered at line core, and in the G-band (430.5 nm), using an interference filter (1 nm FWHM). We acquired a two-hour long sequence of images at a cadence of ten seconds and a spatial resolution of about 0.3 arcsec. We present our Ca observations of excellent spatial resolution which show morphological structures in internetwork regions similar in form, size and lifetime to those present in recent numerical models of the solar chromosphere.

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