HOMES: Holographic Optical Method for Exoplanet Spectroscopy

Thomas D. Ditto; Stephen P. McGrew

doi:10.1117/12.2024645

26 September 2013 HOMES: Holographic Optical Method for Exoplanet Spectroscopy

Thomas D. Ditto, Stephen P. McGrew

Proceedings Volume 8864, Techniques and Instrumentation for Detection of Exoplanets VI; 88641S (2013) https://doi.org/10.1117/12.2024645
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

A novel telescope architecture is proposed specifically for the purpose of taking spectra of exoplanets orbiting stars within 10 pc ("the neighborhood"). The primary objective and the secondary spectrograph are holographic optical elements (HOEs) formed on flat membrane substrates of low areal mass that can be transported on cylinder rolls that are compatible with the payload geometry of delivery vehicles. Ribbon-shaped HOEs of up to 100 x 10 meters are contemplated. Computer models are presented with these dimensions. The models predict resolving power better than 10 mas. Because the primary separates wavelengths, we consider coronagraphs that use the divide and conquer strategy of one wavelength at a time. After delivery at the second Lagrange point, the stowed membranes are unfurled into flat holographic optics positioned in a four part formation spanning 1 km of open space.

Citation Download Citation

Thomas D. Ditto and Stephen P. McGrew "HOMES: Holographic Optical Method for Exoplanet Spectroscopy", Proc. SPIE 8864, Techniques and Instrumentation for Detection of Exoplanets VI, 88641S (26 September 2013); https://doi.org/10.1117/12.2024645

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