MORISOT (MOnet Robotic Instrument for Spectroscopy Of Transients) is a low-resolution optical spectrograph installed at our 1.2 m robotic telescope MONET/South located at SAAO. The installation of the newly designed frontend at the telescope enabled the commissioning of MORISOT in December 2023. With this frontend, MORISOT will be able to run fully robotically by using the main camera of the telescope for simultaneous guiding. Moreover, a second 25-cm-telescope, mounted at MONET/South, can be used to simultaneously perform photometric observations of the spectroscopically observed objects. The fully robotic operations will be handled by our observatory control system pyobs, which already runs our robotic telescopes for photometric observations and will be extended to handle all the operations (guiding, spectroscopy and photometry) at once. First use cases will be a high-cadence survey of changing-look AGN and a survey of transiting exoplanets.
We introduce MOSES, the new High-Resolution Echelle Spectrograph designated for the 1.2m MONET telescope at McDonald Observatory, Texas, USA. The science drivers are radial velocity experiments and activity monitoring in Sun-like stars. Set for installation in the final quarter of 2025, MOSES features a white pupil design and aims for a spectral resolution greater than 80,000 over the 380-680 nm wavelength range. It incorporates a pixel sampling rate of 3.5 and uses two fibers to facilitate a simultaneous calibration mode. Encased within a vacuum vessel and operating in a temperature-stabilized environment, MOSES is expected to achieve a radial velocity precision below 2 m/s, aided by a Fabry-Pérot etalon calibration system. This paper outlines the implementation of the fiber injection unit, the optical layout of the spectrograph, and the present status of the various subsystems under development.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.