| Grism | Status and Remarks | Date |
|---|---|---|
| 3 | Clean, undamaged | 6/2004 | 4 | 5 | Not clean | 6/2004 | 6 | 7 | Fingerprint on grating, and hair/scratch at rim. | 8 | OK | 9 | Clean, undamaged | 6/2004 | 10 | Not clean; 4mm scratch on grating side, about 1cm from center | 7/2004 | 11 | Many small blemishes on grating | 6/2004 | 12 | Wide CD grism; coating/resin pealing off along outer 4mm rim | 6/2004 | 13 | Some scratches on grating | 6/2004 | 13 | Clean, undamaged | 6/2004 | 14 | 15 | Clean, undamaged | 6/2004 | | 16 | Has a mask around holder to stop a central ghost; u-shaped scratch on grating 7mm from rim | 6/2004 | 16 | Is superseded by grism #18 since 2017: use grism #18 instead of #16 | 12/2023 | | 17 | 18 | 19 | 20 |
All grisms are OK to use, but see remark about #16.