Progress on FORS-Up: the first instrument using ELT technologies

TL;DR

This paper reports on the upgrade of ESO's FORS1 instrument, incorporating ELT technologies, new hardware, and software to enhance its capabilities and operational efficiency.

Contribution

It introduces the first instrument using ELT technologies, integrating new hardware and software components into the upgraded FORS1.

Findings

Successful procurement and testing of new CCD and controller

Development of new grisms and filters for enhanced performance

Design of an internal calibration unit for operational efficiency

Abstract

ESO is in the process of upgrading one of the two FORS (FOcal Reducer/low dispersion Spectrograph) instruments - a multi-mode (imaging, polarimetry, long-slit, and multi-object spectroscopy) optical instrument mounted on the Cassegrain focus of Unit Telescope 1 of ESO's Very Large Telescope. FORS1 was moved from Chile to Trieste, and is undergoing complete refurbishment, including the exchange of all motorised parts. In addition, new software is developed, based on the Extremely Large Telescope Instrument Control Software Framework, as the upgraded FORS1 will be the first instrument in operations to use this framework. The new Teledyne e2V CCD has now been procured and is undergoing testing with the New Generation Controller at ESO. In addition, a new set of grisms have been developed, and a new set of filters will be purchased. A new internal calibration unit has been designed, making the operations more efficient.