FORS2 Standard Instrument Configuration P83+
The Standard Instrument Configuration contains the optical components available for Service Mode observations. Applications to change the configuration will only be considered in Visitor Mode for the current period. Users requesting such changes should contact us as soon as possible (fors@eso.org).
FORS2 Standard Filters for P83+
The following filters shall form the Standard Instrument Configuration for P83 (post FORS1/2 merger). Response curves are given in the P83 user manual. Additionally, there is space for a number of Interference Filters (see list).
| Filter name+ESO number | eff. wavelength (nm) | FWHM (nm) | ||
|---|---|---|---|---|
| u_HIGH+112 | 361 | 50.5 (1) | ||
| b_HIGH+113 | 440 | 103.5 (2) | ||
| v_HIGH+114 | 557 | 123.5 | ||
| g_HIGH+115 | 470 | 160.5 | ||
| R_SPECIAL+76 | 655 | 165.0 | ||
| I_BESS+77 | 768 | 138.0 | ||
| z_GUNN+78 | 910 | 130.5 | ||
| GG435+81 (3) | n/a (edge filter) | n/a | ||
| OG590+32 (3) | n/a (edge filter) | n/a | ||
| (1) red leak <5*10^-6 (2) red leak <1*10^-5 (3) these are intended as order separation filters for spectroscopy |
||||
FORS2 Grisms available for P83+
The following grisms shall form the Standard Instrument Configuration for P83 (post FORS1/2 merger). Response curves are given in the P83 user manual.
| Grism name + ESO number | Lambda Central | Wavelength range | Dispersion | Order separation |
|---|---|---|---|---|
| [nm] | [nm] | [Å/mm] | filter | |
| standard: | ||||
| GRIS_600B+22 | 465 | 330 - 621 | 50 | none |
| GRIS_300V+10 (1) | 590 | 330 - (660) | 112 | none |
| GRIS_300V+10 | 590 | 445 - 865 | 112 | GG435 |
| GRIS_300I+11 | 860 | 600 - 1100 | 108 | OG590 |
| GRIS_150I+27 (1) | 720 | 330 - (650) | 225 | none |
| GRIS_150I+27 (1) | 720 | 445 - (880) | 230 | GG435 |
| GRIS_150I+27 | 720 | 600 - 1100 | 230 | OG590 |
| holographic: | ||||
| GRIS_1400V+18 | 520 | 456 - 586 | 20.8 | none |
| GRIS_1200B+97 | 435 | 366 - 511 | 24.0 | none |
| GRIS_1200R+93 | 650 | 575 - 731 | 25.0 | GG435 |
| GRIS_1028z+29 | 860 | 773 - 948 | 28.3 | OG590 |
| GRIS_600RI+19 | 678 | 512 - 845 | 55 | GG435 |
| GRIS_600z+23 | 901 | 737 - 1070 | 54 | OG590 |
| (1) If used without or with the listed order separation filter, the orders will overlap above the given wavelength. | ||||