A focal reducer in front of the instrument converts the f/9 beam coming from the telescope into an f/3.65 beam. The IFU consists of 267 fibers that are 3.2 arcsec on the sky, covering 105 arcsec x 55 arcsec.
The instrument characteristics can be summarized as:
Detector(s): e2v CCD 44-82, back side illuminated CCD consisting of 2046x4096 15 micron pixels.
Wavelength Coverage and Spectral Resolving Power:
High resolution mode: R=λ/Δλ ~8700
Wavelength range: 4850 – 5480 Å
Low resolution mode: R=λ/Δλ ~3300
Wavelength range: 4340 - 6040 Å
Throughput/sensitivity: Throughput is 37%, including the telescope
GCMS / VIRUS-W Finder Chart Generation - ifuchart
Instrument Scientist:
GH
Gary Hill
- Chief Astronomer
- McDonald Observatory
- Astronomy
Telephone Number:512-471-1477
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