Enhancements over the electronic control for OSIRIS-Gtc Fabry-Perot tunable filters.

Details Enhancements over the electronic control for OSIRIS-Gtc Fabry-Perot tunable filters. Enhancements over the electronic control for OSIRIS-Gtc Fabry-Perot tunable filters.

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6269e.140h&link_type=abstract

Ground-based and Airborne Instrumentation for Astronomy. Edited by McLean, Ian S.; Iye, Masanori. Proceedings of the SPIE, Volu

Astronomy and Astrophysics

Astronomy

Scientific paper

OSIRIS (Optical System for Imaging and low Resolution Integrated Spectroscopy) is the optical Day One instrument for the 10.4m Spanish telescope GTC (Gran Telescopio Canarias). The instrument spectral range covers from 365 up to 1000 nm. One of the most important elements of OSIRIS is its two commercial ICOS ET100 wide field Fabry-Perot tunable filters, that will provide a powerful tool to analyse faint emission line objects. Currently, the unique controller available for such device is the so called CS100. Due to the necessity of improvement and addition of some specifications of such controller, a first prototype electronic module has been made and tested successfully. Now, it has developed the final product: a compact mini-module integrated in the CS100 controller, offering a 16-bit resolution over the full range cavity spacing; be able to synchronize cavity changes with an external trigger; full remote control over the front panel of the device and capability to monitor all their signals. It also offers the possibility to load a preprogrammed table sequence of cavity spacing changes, programmable security limits of dynamic range and slew rate applied; and it has high stability over time too. The electronic control is based on an embedded microcontroller into a FPGA.

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