| LIRIS filters, grisms, prisms, slits and pupils
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LIRIS has two filter wheels (FW1, FW2), a slit wheel (SW), a grism wheel (GW) and a pupil wheel (PW). The current configuration of each is given below. Dummies in the wheels are not explicitly listed. Filters in the filter wheels are inclined by 5 degrees in order to suppress reflections in the image. The green commands explain how to move a wheel independently of the others. Note: The Wollaston prims for polarimetry will be installed in the filter wheels in 10 / 2004. Note: The R=3000 grisms will not be available for period 2004b. Note: The coronographic mode is already available and will be commissioned in 10 / 2004. |
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| Filter wheel configuration lfwheel[1|2] <filter name> | ||||||||
| Filter name | Wheel and Pos. | Cut-on [μm] | Cut-off [μm] | Transmission and remarks | ||||
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| z | FW2 - 9 | 0.996 | 1.069 | warm cold | ||||
| j | FW2 - 10 | 1.170 | 1.330 | warm cold | ||||
| h | FW2 - 5 | 1.490 | 1.780 | warm cold | ||||
| ks | FW2 - 2 | 1.990 | 2.310 | warm cold | ||||
| brg | FW2 - 7 | 2.150 | 2.182 | warm cold | ||||
| kc | FW2 - 12 | 2.253 | 2.287 | warm cold | ||||
| hc | FW1 - 11 | 1.558 | 1.582 | warm cold | ||||
| fe2 | FW1 - 5 | 1.632 | 1.656 | warm cold | ||||
| h2v10 | FW1 - 10 | 2.106 | 2.138 | warm cold | ||||
| h2v21 | FW1 - 4 | 2.231 | 2.265 | warm cold | ||||
| ch4 | FW1 - 3 | 1.640 | 1.740 | warm cold | ||||
| he1 | FW2 - 6 | 2.043 | 2.073 | warm cold | ||||
| hkspec | FW2 - 3 | 1.4 | 2.5 | warm cold | ||||
| ucm | FW1 - 9 | 1.177 | 1.186 | warm cold ucm is a private filter. Contact Jesus Gallego before using it. |
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| woll_spec | FW1 - 1 | Spectropolarimetry | ||||||
| wdw_hf | FW1 - 7 | Imaging polarimetry | ||||||
| clear | FW1 - 8 | - | - | - | ||||
| clear | FW2 - 4 | - | - | - | ||||
| Slit wheel configuration lslit <slit mask name> | ||||||||
| Slit mask name | Wheel and Pos. | Type | Width | Remarks | ||||
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| l0p65 | SW - 1 | Long slit | 0.65" | |||||
| l0p75 | SW - 2 | Long slit | 0.75" | |||||
| l1 | SW - 3 | Long slit | 1.0" | |||||
| l2p5 | SW - 4 | Long slit | 2.5" | |||||
| l5 | SW - 5 | Long slit | 5.0" | |||||
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| various | SW - 6, 7, 8 SW - 10, 11, 16 |
Multi slit masks | - | |||||
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| cor | SW - 12 | - | - | Coronographic mask | ||||
| patron 900 | SW - 14 | - | - | |||||
| lineahole | SW - 15 | - | - | |||||
| clear | SW - 13 | - | - | Clear aperture | ||||
| blank | SW - 9 | - | - | Blocked light path | ||||
| Grism wheel configuration lgrism <grism name> | ||||||||
| Grism name | Wheel and Pos. | Wavelength | Resolution | Remarks | ||||
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| lrhk12tl10 | GW - 1 | H - K | R = 1000 | Inclination angle: 10° don't use | ||||
| lrhk11 | GW - 2 | H - K | R = 1000 | Inclination angle: 0° | ||||
| lrzj8 | GW - 7 | z - J | R = 1000 | Inclination angle: 0° | ||||
| lrzj9tl5 | GW - 8 | z - J | R = 1000 | Inclination angle: 5° don't use | ||||
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| wdw_image | GW - 6 | - | - | Imaging polarimetry | ||||
| clear | GW - 10 | - | - | Clear aperture | ||||
| Pupil wheel configuration lpupil <pupil name> | ||||||||
| Pupil name | Wheel and Pos. | Purpose and remarks | ||||||
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| pshortbr | PW - 1 | Short wavelength, broad band filters; lrzj8 grism; | ||||||
| pcblnkxl | PW - 2 | Long wavelength, broad band; lrhk grism; 10mm shield for M2 | ||||||
| plongmd | PW - 3 | Long wavelength, medium band filters | ||||||
| pcoron | PW - 4 | Coronographic mode | ||||||
| phdhart | PW - 6 | Hartmann mask | ||||||
| pshortbru | PW - 7 | 2% smaller area than pshortbr | ||||||
| pcblnk | PW - 8 | Like pcblnkxl, but with 8.83mm shield for M2 | ||||||
| plongmidu | PW - 9 | 2% smaller than plongmd | ||||||
| pcentnr | PW - 11 | Narrow band filters | ||||||
| pvdhart | PW - 12 | Hartmann mask | ||||||
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| clear | PW - 5 | Clear aperture | ||||||
| blank | PW - 10 | Blocked light path | ||||||
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Last Updated: 26 May 2004 Mischa Schirmer ( ) |
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