GIRAFFE Low Resolution grating settings
From P84 in ARGUS/GIRAFFE, the setting LR01 is
available in VISITOR MODE ONLY due to the problem of
obtaining sufficient counts in blue attached flats. For Medusa and IFU
all settings are available in service and visitor mode.
| Filter | Theta | Order | p2pp name | ETC name | Wl start | Wl center | Wl end | Band | R IFU/Argus | R MEDUSA |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 32.4 | 5 | L385.7 | LR1 | 362.0 | 385.7 | 408.1 | 46.1 | 12800 | 8000 |
| 2 | 27.9 | 4 | L427.2 | LR2 | 396.4 | 427.2 | 456.7 | 60.3 | 10200 | 6400 |
| 3 | 32.2 | 4 | L479.7 | LR3 | 450.1 | 479.7 | 507.8 | 57.8 | 12000 | 7500 |
| 4 | 26.3 | 3 | L543.1 | LR4 | 501.5 | 543.1 | 583.1 | 81.6 | 9600 | 6000 |
| 5 | 30.6 | 3 | L614.2 | LR5 | 574.1 | 614.2 | 652.4 | 78.3 | 11800 | 7400 |
| 6 | 34.9 | 3 | L682.2 | LR6 | 643.8 | 682.2 | 718.4 | 74.6 | 13700 | 8600 |
| 7 | 24.7 | 2 | L773.4 | LR7 | 710.2 | 773.4 | 834.3 | 124.0 | 8900 | 5600 |
| 8 | 29.0 | 2 | L881.7 | LR8 | 820.6 | 881.7 | 940.0 | 119.0 | 10400 | 6500 |
- - Filter is the filter number;
- - Theta is the angle of diffraction with the grating normal;
- - Order is the working echelle order;
- - Wl star, center, end are the wavelengths at the edges and center of the CCD;
- - Band is the covered spectral passband;
- - resolving power, R, obtained in IFU/Argus mode;
- - resolving power, R, obtained in MEDUSA mode.
- - Theta is the angle of diffraction with the grating normal;