CAFÉ MAIN FEATURES
Design Telescope Resolution Wavelength Sensitivity N. of orders	Echelle spectrograph Calar Alto 2.2m 62000±5000 3960 - 9500A SNR 30 mag 14.5 2700s 84; from 60 to 143.

TELESCOPE MODULE
Calibration lamps Aperture	Hal and ThAr 2.4 arcsecons (200μm)

OPTICAL FIBER
Type Length Inner protection tube Outer protection tube Micro-lenses	Polymicro FBP100140170 17.5m ETFE with Kevlar for strain relief Stainless steel tube N-F2, both ends

OPTICAL DESIGN
Optical bench Entrance slit width Grating Collimator1 Collimator2 Prisms Camera CCD Pneumatic isolator	2400 x 1200 x 203mm 100μm 31.6 g/mm BA1=63.9 degrees λ/20 λ/20 FL=60.0”D=10.0”OAD=7.0” λ/20 FL=60.0”D=10.0”OAD=9.0” Prisms LF5, Deviation angle 33 degrees f/3 IKON-L DZ936 back illuminated Newport I-2000