These images are available in GIF format. In these images, the center of the image is the center of the sun, North is straight up at the top of the image. East is to the left. Solar coronal data taken with the mk3 instrument exists from 1980 to the present. All data to present has been calibrated and is available.
Data are purely qualitative.
These images of the corona are appropriate for display and morphological purposes. Quantitative data are available via special request.