LMIRCam Prism, Grisms, & other
LMIRCam Prism, Grisms, & other
Prisms and Grisms
NALES Prisms
| Name | Filter Wheel and Position | Wavelength Range [μm] |
Spectral Resolution |
Modes/Bands |
|---|---|---|---|---|
| IFU prisms (ZnSe+AlO2), 2.8-4.2 μm | FW 3, 3 | 2.8-4.2 | ~40 | L-band |
| NALES LM prisms, 3.0-5.0 μm | FW 3, 12 | 3.0-5.0 | ~20 | L/M-band |
| NALES L-spec prisms, 2.2-3.7 μm | FW 3, 7 | 2.2-3.7 | ~40 | Ice |
| IFU prisms (ZnSe+AlO2), 2.2-2.3 μm | FW 3, 10 | 2.0-2.3 | ~150 | Ks / Brγ |
| NALES Lshort prisms, 3.1-3.5 μm | FW 3, 5 | 3.1-3.5 | ~100 | PAH / CH4 |
Grisms
| Name | Filter Wheel and Position |
Ruling [g/mm] |
Blaze Angle [deg] |
Peak Efficiency [μm] |
Comments |
|---|---|---|---|---|---|
| L-Grism #6 AR coated | FW 3, 8 | 40 | 2.8 | 3.6 | L-band in first order |
| M-Grism #1 AR coated | FW 3, 9 | 32 | 2.8 | 4.4 | M-band in first order |
| 2.3 | K-band in second order |
Other
Other includes an overview of the masks and apodizing phase plated, lenlet array, magnifiers, and apertures,
Magnifiers
| Name | Position | Spaxel Plate Scale | Field-of-View |
|---|---|---|---|
| 6X Reflective Magnifier | Magwheel 2 | 6×6 mas | 0.45×0.45″ |
| 12X Reflective Magnifier | Magwheel 3 | 12×12 mas | 0.9×0.9″ |
| 25X Reflective Magnifier | Magwheel 4 | 25×25 mas | 1.8×1.8″ |
| Magnifier (φ=20mm ZnSe + φ=5mm CaF2 lenses) | Magwheel 5 | 50×50 mas | 3.6×3.6″ |
Apertures and Masks
| Name | Position | Comments |
|---|---|---|
| vAPP #1, 360˚ , 2 LCP layers | 2 | |
| vAPP #2, 180˚ , D-shape, 1 LCP layer | 3 | |
| DX Aperture, φ~7.48mm | 4 | |
| SX Aperture, φ~7.48mm | 5 | |
| Non-Redundant Mask, 24-hole | 6 | |
| Non-Redundant Mask, 12-hole | 7 | |
| Spider Annulus | 8 | |
| Large Dual Aperture, φ~7.49mm | 9 | |
| AGPM Dual Ap Spider Mask | 10 | |
| Blank | 12 |
