DESI's volume phase holographic grating
Before the light lands on DESI's detectors, it is spread using a volume phase holographic (VPH) grating. The detector arrays have 4096×4096 15μm pixels and are each housed in their own cryostat so that can be kept very cold to maintain stability.
Credit:Lawrence Berkeley National Lab/KPNO/NOIRLab/NSF/AURA
About the Image
| Id: | grating_CC |
| Type: | Photographic |
| Release date: | Nov. 26, 2020, 9:48 a.m. |
| Size: | 2039 x 1200 px |
About the Object
| Name: | DESI |
| Category: | Kitt Peak National Observatory |
