OSIRIS - Tunable Filter - Etalon properties


Wavelength Range 365 to 1000 nm
FWHM of the Tunable Filters
at 372.7 nm 0.99 nm (goal 1.49 nm)
at 656.3 nm 1.75 nm (goal 2.62 nm)
at 906.9 nm 2.42 nm (goal 3.63 nm)
Contrast At least 400 (for the blue TF) and 1000 (for the red TF) (TBC)
Throughput At least 70 % at the central wavelength (TBC)
Wavelength range for the TF blue 365 to 670 nm
Wavelength range for the TF red 620 to 1000 nm
Plate flatness At least lambda/200
Gap scanning range Plate separation between 2 mum and 12 mum
Etalon clear aperture 100 mm


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Last update August 5, 2005, by Héctor Castañeda