AAT Instrument - FORS is a
decommissioned instrument and is no longer offered or supported at the
AAT. The following information is provided for historical completeness.
| In Brief: | FORS is a fixed format spectrograph which provides low resolution coverage between 5300 - 11000 Å. Simultaneous observations can be made on FORS and the RGO Spectrograph with a dichroic beam splitter to provide full optical coverage. |
|---|---|
| Instrument Scientist: | No Instrument Scientist at present. Contact Head of Astronomy for information. |
| Manual: | AAO UM-23.1
FORS Users' Manual, Couch, W. J., 1989. Available in hardcopy only. There is also an entry in the AAO Observer's Guide. |
Fact Sheet | |
| Detector: | 576 x 385 uncoated GEC CCD with 22 um sq pixels. |
| Focal Station: | mounted at Cassegrain, with f/8 top end |
| Image Scale: | 1 arcsec per pixel (unbinned) |
| Spectral Resolution*: | R=300 at 6000 A with 2 arcsec slit. |
| Filters: | Dichroic beam splitter gives 5300 - 10200 Å GG495 gives 5200 - 9600 Å OG530 gives 5300 - 10200 Å RG630 gives 6300 - 11000 Å |
| Non-standard Modes: | Can be used with polarimeter, in time series mode, and with FOCAP for multi-object observations. |
| Sensitivity: | AB |
| *Spectral Resolution R measured as lambda/delta_lambda, delta_lambda = FWHM unresolved line, usually 2 pixels. | |