Image Details
Caption: Figure 1.
TiO filter curve tested by Andover Corporation and solar spectrum from the HelioSpectrotron 5000 (https://github.com/AlexPietrow/HelioSpectrotron5000) (A. G. M. Pietrow 2026). Blue dashed line is the Gaussian fit of the filter curve, and yellow dashed line indicates the full width at half-maximum of 0.9 nm.
© 2026. The Author(s). Published by the American Astronomical Society.