OST will detect biosignatures and characterize habitable planets. Model transmission (left) and emission (right) spectra of TRAPPIST-1e (0.92 RE, 250 K) with simulated JWST (blue) and OST/MISC (red) data. The panels indicate bandwidths of detectable molecular features. Uncertainties are derived for a Kmag = 8 star using 30 transits/eclipses. The JWST+MIRI/LRS simulations assume an optimistic noise floor of 30 ppm. The OST simulations assume a 9-meter aperture.
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