Optical-mechanical operation of the F2T2 Filter: a tunable filter designed to search for First Light
Erin Mentuch, Alan Scott, Roberto Abraham, Elizabeth Barton, Matthew, Bershady, Joss Bland-Hawthorn, David Crampton, Rene Doyon, Steve Eikenberry,, Mike Gladders, Karl Glazebrook, Joe Jenson, Jeff Julian, Roger Julian,, Jean-Paul Kneib, David Loop, Nick Raines, Neil Rowlands
TL;DR
The paper discusses the design, calibration, and performance of the F2T2 tunable filter, a device capable of scanning specific near-infrared wavelengths to aid in detecting the universe's first star-forming regions.
Contribution
It introduces a novel tunable filter with dual Fabry-Perot etalons for near-IR astronomy, enabling targeted searches for early universe objects.
Findings
Successful calibration of the F2T2 filter
Achieved spectral resolution of R~800
Operational in the 0.95-1.35 micron range
Abstract
The Flamingos-2 Tandem Tunable filter is a tunable, narrow-band filter, consisting of two Fabry-Perot etalons in series, capable of scanning to any wavelength from 0.95 to 1.35 microns with a spectral resolution of R~800. It is an accessory mode instrument for the near-IR Flamingos-2 imaging-spectrograph designed for the Gemini South 8m Observatory and will be fed through the upcoming Multi-Conjugate Adaptive Optics feed. The primary science goal of the F2T2 filter is to perform a ground-based search for the first star forming regions in the universe at redshifts of 7 < z < 11. The construction of the F2T2 filter is complete and it is currently in its calibration and commissioning phases. In this proceeding, we describe the calibration and performance of the instrument.
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