DESI corrector lens
DESI's corrector is designed to provide a larger field of view to the focal plate, allowing 5,000 fibers to be arranged over 8 square degrees.
The design includes four large lenses composed of fused silica. The two smaller lenses are aspheric on one surface; all other silica surfaces are spherical. An atmospheric dispersion compensator (ADC) is included in the design, in order to meet blur requirements at off-zenith angles. This compensator includes two large wedged borosilicate lenses with spherical surfaces.
Credit:Lawrence Berkeley National Lab/KPNO/NOIRLab/NSF/AURA
About the Image
Id: | DESI-Mirror_CC |
Type: | Photographic |
Release date: | Nov. 26, 2020, 9:44 a.m. |
Size: | 1286 x 1080 px |
About the Object
Name: | DESI |
Category: | Kitt Peak National Observatory People and Events |