- Press Release
- August 6, 2022
The largest solar telescope in the world is using a mirror substrate made of the glass-ceramic ZERODUR® from SCHOTT
The first images from the Daniel K. Inouye Solar Telescope (DKIST) of the National Science Foundation (NSF) were published end of January: They show unprecedented details of the sun’s surface and offer a preview of the outstanding results that are expected from this 4-meter solar telescope. This imaging quality is made possible by a monolithic 4.26-meter mirror made of the glass-ceramic ZERODUR®. The huge mirror diameter and the extraordinary material properties make it possible to observe structures on the sun that are 25 kilometers in size, although the sun is almost 150 million kilometers away. This equates to observing a pea from a distance of 30 kilometers. The resolving power is thus 2.6 times higher than that of the largest solar telescope to date, the Big Bear Solar Observatory near Los Angeles, which also uses a primary mirror made of ZERODUR®.