PUCHEROS is a high resolution optical Echelle spectrograph designed for the 50 cm telescope located at the
Pontificia Universidad Cat´olica de Chile (PUC) observatory of Santa Martina. With a resolution about 20,000,
PUCHEROS is an ideal instrument to study bright and variable objects, our driving science case is the study
of bright early type stars. Using a fiber optic to bring the light from the telescope to the instrument, it can be
located in a gravity invariant, temperature stabilized location, allowing precise long-term stability. PUCHEROS
will be a valuable tool both for research and didactics at the graduate and undergraduate level. In this work we
present the optical and mechanical design of the spectrograph as well as the first laboratory tests.
We present the design of an echelle spectrograph based on commercially available components. This instrument
is an ideal solution to equip small telescopes with low cost but scientifically effective instrumentation. The
spectrograph is fiber fed, reaches a resolution of about 8,000, can be located in a gravity invariant and thermally
controlled environment and can be used for the long term spectroscopic monitoring of bright objects. The optical
design and performances of the instrument are analyzed using Zemax, we present an option for the mechanical
design too.
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