MOONS-ESO spectrograph: status of the cryogenic opto-mechanical system for movable optics

Andrea Tozzi; Enzo Anaclerio; Lorenzo Crimella; Isaac Facchin; Anna Brucalassi; Ernesto Oliva

doi:10.1117/12.2560482

13 December 2020 MOONS-ESO spectrograph: status of the cryogenic opto-mechanical system for movable optics

Andrea Tozzi, Enzo Anaclerio, Lorenzo Crimella, Isaac Facchin, Anna Brucalassi, Ernesto Oliva

Proceedings Volume 11447, Ground-based and Airborne Instrumentation for Astronomy VIII; 114477W (2020) https://doi.org/10.1117/12.2560482
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The construction of the Multi Object Optical and Near-infrared Spectrograph (MOONS) instrument, the next generation multi object spectrograph for the VLT, is ongoing. This remarkable instrument will combine for the first time the 8 m collecting power of the VLT, 1001 optical fibers with individual robotic positioners and both medium and high resolution spectral coverage across the wavelength range 0.65μm to 1.8 μm. The cryogenic optical bench, with its dimension of 2x3.2 meters, is extremely huge and accommodates the three optical branches (H, RI, YJ bands) with two spectral resolutions: this has been made possible thanks to four sliding systems capable to move over 250 Kg of optics and mechanics at 90K. In this paper we describe the status of these opto-mechanical systems, placing emphasis to the performances and the solutions adopted to realize the sliding systems.

Citation Download Citation

Andrea Tozzi, Enzo Anaclerio, Lorenzo Crimella, Isaac Facchin, Anna Brucalassi, and Ernesto Oliva "MOONS-ESO spectrograph: status of the cryogenic opto-mechanical system for movable optics", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114477W (13 December 2020); https://doi.org/10.1117/12.2560482

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