Preparation of a Dual Wavelength Sequence of High-Resolution Solar Photospheric Images Using Phase Diversity

The collection, seeing compensation, and temporal filtering of a high-resolution time-sequence of solar photospheric images is described. A 70 minute time series of cospatial and cotemporal G band 4305 Å and wideband 4686 Å filtergrams was obtained with the 50 cm Swedish Vacuum Solar Telescope on the island of La Palma, Spain. The 29" × 70" field-of-view near disk center contains both an enhanced network region and an (apparently) nonmagnetic ``quiet'' region of granulation. The mean time between frames is 23.5 s. Each frame is created with partitioned phase-diverse speckle restoration of three realizations of the atmospheric turbulence acquired rapidly in sequence. The result is high-resolution movies of the solar photosphere, good enough to allow detection, tracking, and analysis of ~0.2" bright points. This analysis is the subject of a companion paper.