 |
 |
| Providing the large-area aperture needed to observe the sun in unprecendented detail is this primary mirror. Last month it was being polished and said to be nearing final specification at the University of Arizona's College of Optical Sciences. This image was taken during a metrology check between polishing runs on July 13. Photo: NSO/AURA/NSF. |
| © 2024 SPIE Europe |
|
