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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.

The Review of Scientific Instruments
|December 3, 2013
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Summary

The COmpact LOw REsolution Spectrograph (COLORES) is a new instrument for robotic telescopes. It offers seamless switching between low-dispersion spectroscopy and direct imaging for astronomical observations.

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Area of Science:

  • Astronomy and Astrophysics
  • Optical Instrumentation

Background:

  • Robotic telescopes require compact and lightweight instrumentation.
  • Efficient multi-mode spectrographs are crucial for versatile astronomical surveys.

Purpose of the Study:

  • To describe the development and capabilities of the COmpact LOw REsolution Spectrograph (COLORES).
  • To detail the design, calibration, and initial performance of COLORES for robotic telescopes.

Main Methods:

  • Optical design and theoretical performance calculations.
  • Mechanical and electronic design and implementation.
  • Calibration procedures and initial data analysis.

Main Results:

  • COLORES is a 13 kg, f/8 imaging spectrograph successfully installed on the TELMA telescope.
  • The instrument supports seamless switching between low-dispersion spectroscopy and direct imaging modes.
  • Early laboratory and scientific results demonstrate the instrument's capabilities.

Conclusions:

  • COLORES is a versatile and efficient spectrograph suitable for robotic telescope applications.
  • The instrument's multi-mode capability enhances observational flexibility.
  • Successful deployment and initial results validate the COLORES design for astronomical research.