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Updated: May 5, 2026

Bringing the Visible Universe into Focus with Robo-AO
Published on: February 12, 2013
Compact low resolution spectrograph, an imaging and long slit spectrograph for robotic telescopes
O Rabaza1, M Jelinek, A J Castro-Tirado
1Department of Civil Engineering, University of Granada, Severo Ochoa Str. s∕n, 18071 Granada, Spain.
Abstract:
The COmpact LOw REsolution Spectrograph (COLORES) is a compact and lightweight (13 kg) f/8 imaging spectrograph designed for robotic telescopes, now installed and operating on the TELMA, a rapid-slewing 60 cm telescope of the BOOTES-2 observatory in Málaga (Spain). COLORES is a multi-mode instrument that enables the observer to seamlessly switch between low-dispersion spectroscopy and direct imaging modes during an observation. In this paper, we describe the instrument and its development, from the initial scientific requirements through the optical design process to final configuration with theoretical performance calculations. The mechanical and electronic design is described, methods of calibration are discussed and early laboratory and scientific results are shown.
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