Last update: 2021.12.17
| Filter | Name | Data | Status | Wavelength (um) | Transmission(%) | Note | |
|---|---|---|---|---|---|---|---|
| Centre (um) | Width (um) | ||||||
| Cryostat Entrance Window | |||||||
| Ge | W01Ge | - | installed | nomally not used | |||
| Kbr | WxxKBr | - | installed. open | default window, xx=02 or >=04 | |||
| Filters in pre-optics | |||||||
| N wide | F01C10.50W6.00 | - | installed, open | 10.7 | 6.0 | 60 | Wide band for NL,NM spectoroscopy |
| new N wide | F51C10.50W7.25 | - | installed, open | 10.7 | 7.2 | 91.51 | new Wide band for NL,NM spectoroscopy |
| Q wide | F53C22.50W13.0 | - | installed, open | 20.3 | 13.0 | 85.1 | Wide band for QM spectoroscopy |
| Q short | F17C19.00W3.80 | - | installed, open | - | - | - | Wide band for QM-short spectoroscopy |
| Q long | F18C23.00W4.60 | - | broken | - | - | - | Wide band for QM-long spectoroscopy |
| Ar III 8.99 | F23C08.99W0.13 | R | installed, open | 8.98 | 0.13 | 75.80 | Order sorting for NH spectoroscopy |
| S IV 10.51 | F26C10.52W0.16 | R | installed, open | 10.46 | 0.16 | 74.05 | Order sorting for NH spectoroscopy |
| UIR 11.2 | F29C11.30W0.60 | R | installed, open | 11.24 | 0.60 | 66.66 | Order sorting for NH spectoroscopy |
| Ne II 12.81 | F30C12.81W0.20 | R | installed, open | 12.81 | 0.21 | 53.05 | Order sorting for NH spectoroscopy |
| H2 S(1) 17.035 | F34C17.00W0.40 | R | Not installed | - | - | - | Order sorting for QH spectoroscopy |
| K | F19C02.16W0.33 | - | Not installed | - | - | - | for objects search |
| KRS-5 wire-grid | G02 | maker, internal | installed | ∼2 to 35 | ∼33 | > 50 | for N-band polarimetry |
| Filters in imaging optics | |||||||
| N7.8 | F04C07.80W0.70 | R | installed, open | 7.8 | 0.7 | 72 | |
| UIR 8.6 | F22C08.60W0.43 | R | installed , open | 8.59 | 0.42 | 68.20 | |
| N8.8 | F05C08.70W0.80 | R | installed, open | 8.8 | 0.8 | 83 | |
| N9.7 | F06C09.80W0.90 | R | installed, open | 9.7 | 0.9 | 67 | |
| N10.5 | F07C10.30W1.05 | R | installed, open | 10.5 | 1.0 | 72 | |
| N11.7 | F08C11.60W1.10 | R | installed, open | 11.7 | 1.0 | 55 | |
| N12.4 | F09C12.50W1.15 | R | installed, open | 12.4 | 1.2 | 53 | |
| Ne II Ref | F32C13.10W0.20 | - | Not installed | - | - | - | |
| Q16.6 | F33C16.50W0.40 | R | Not installed | 16.57 | 0.41 | 50.85 | |
| Q17.7 | F36C17.65W0.90 | R | installed, open | 17.69 | 0.87 | 59.93 | |
| Q18.5 | F12C18.50W1.20 | R | Not installed | 18.29 | 1.53 | - | |
| Q18.8 | F37C18.75W0.85 | R | installed, open | 18.75 | 0.90 | 51.25 | |
| Q20.5 | F39C20.50W1.00 | R | installed, open | 20.48 | 0.94 | 55.59 | |
| Q20.8 | F13C20.80W0.90 | - | Not installed | 20.8 | 1.7 | - | |
| Q24.5 | F11C24.50W2.20 | R | Not installed | 24.5 | 1.9 | - | |
| Q24.5 | F42C24.50W0.80 | R | installed, open | 24.56 | 0.75 | 55.48 | |