CAFE (Calar Alto Fiber-fed Échelle spectrograph)

AstraLuxObserversTelescope

CAFÉ (Calar Alto Fibre-fed Échelle) Spectrograph is a high resolution (R ~ 60 000) échelle spectrograph for single objects in the visible range (400 nm to 920 nm)

Available at: Cassegrain station of the Zeiss 2.2 m reflector

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In a nutshell

*Instrument name*	CAFÉ Spectgrograph
*Observing technique*	Échelle spectroscopy in visible light
Spectral resolution	R = 62 000 ± 5 000
Spectral range	407 nm - 925 nm
*Aperture*	2.4 arcsec diameter (200 μm)
*Limiting magnitude*	V = 14 mag
*Calibration system*	Thorium and argon discharge lamp
*Camera*	Andor Technologies iKon-L DZ936NBV
*Detector*	2048 x 2048 CCD, 13.5 μm/px, back-illuminated, solid state cooling
*Number of useful orders*	79
Image files	16 bits --> 8 mega bytes per image

Observing with CAFÉ Spectrograph

Publications based on data obtained with CAFÉ Spectrograph shall cite the following reference paper. "CAFE: Calar Alto Fiber-fed Echelle spectrograph." Aceituno et al. A&A, 552,A31.
Publications using CAFÉ Spectrograph pipeline shall cite the following reference paper. "CAFE2: an upgrade to the CAFE high-resolution spectrograph. Commissioning results and new public pipeline." Lillo-Box et al. MNRAS 491,4496.

Preparing observations	During observations	After observing
Requesting observing time	CAFÉ Spectrograph Observing Guide	CAFExtractor pipeline
Exposure time simulator	Acquisition and guiding camera	Th Ar lamp lines identificaton by orders
Standard stars (RV, flux, others)	Night logsheet pdf download	Th Ar lamps identified on a CAFÉ Spectrograph arc image

More information

Technical data

2013 instrument reference article

2020 instrument upgrade and pipeline reference article

Project developement homepage

Key data

2011 commissioning report

Calar Alto Press Releases

A more accurate and efficient CAFE instrument

First planet confirmed from the Calar Alto Observatory

The fingerprint of the stars: the new CAFÉ spectrograph for Calar Alto

The instrument has been founded by the Spanish Ministery of Science ICTS project ICTS-2009-32 (using FEDER funds). Fondo Europ eo de Desarrollo Regional, "Una manera de hacer Europa".