ocr: EIT With a telescope focal length of 1.652 m and a pixel size of 21 micrometer, the plate scale of the EIT images is 2.6 arc sec per pixel. The opfics are divid- ed into quadrants of matched multilayer pairs that are funed to bandpasses se- lected for observation of the chromosphere and corona af all phases of the 50- lar cycle. The quadrants are isolated by a rotating mask that permits only one bandpass to view the Sun at a fime.
