Oct 2026· Optical Manufacturing and Testing 2026· 0 citations
Abstract
Planetary Origins and Evolution Multispectral Monochromator is a Pioneer class balloon mission to study planetary formation in protoplanetary disks. To meet the mission’s Level 2 observatory requirement for encircled energy, requires a 1.8-meter diameter optical telescope that is diffraction limited at 70 μm, i.e. with a < 4 μm transmitted wavefront error for all elevation angles. The telescope consists of three aluminum mirrors in a traditional Cassegrain/Nasmyth configuration along with an aluminum support structure. The primary mirror is a f/1 parabola, the secondary mirror is a convex hyperbola, and the third mirror is a fold-flat such that the beam exists to the side along the OTE’s elevation axis allowing the science instrument to remain stationary. The telescope articulates the secondary mirror to scan the focal point at 1 Hz along the virtual spectrometer slits and to compensate for defocus as a function of elevation angle. This paper updates current design and fabrication status and presents preliminary test and verification plan.
The Habitable Worlds Observatory (HWO) will be NASA's next flagship astrophysics mission, designed to search for signs of life on planets around nearby stars and conduct transformational science across astrophysics. Its High Resolution Imager (HRI) is not only the observatory's main imaging camera, but also provides gr...
V. Van Eylen, Richard J. Massey, Alan Smith et al.· 0 citations
High-resolution spectroscopic observations require stable slit illumination and mitigation of atmospheric refraction effects that degrade throughput and spectral fidelity. We present the optical and mechanical design of a Rotational Atmospheric Dispersion Corrector (RADC) for the coudé Tull Spectrograph on the Harlan J...
Devika K. Divakar, Andrew Pinckney, J. Strubhar et al.· Astronomical Telescopes + In...· 0 citations
We present the design, calibration, and on-sky deployment of OPASpec, a dual-channel spectrograph designed for use with the Original PolyOculus Array (OPA) intended for full operation at Mount Laguna Observatory (MLO) but initially commissioned at Robinson Observatory in Orlando, Florida. Covering a total wavelength ra...
C. Moraitis, S. Eikenberry, Intouch Srijumnong et al.· Journal of Astronomical Tele...· 0 citations
Wavefront sensing reveals that a telescope is misaligned, but not which mirror moved or by how much; inferring the mirror positions themselves turns alignment into a direct correction. We describe a simulation framework for inferring telescope mirror misalignment from multi-field Point Spread Function (PSF) measurement...
S. P.M., Sanchit Sabhlok, Jaren N. Ashcraft et al.· 0 citations
To address the stringent performance requirements of space-based gravitational-wave detection telescopes in terms of superior wavefront quality, a high beam–compression ratio, and exceptional thermal stability, this study proposes a 1064 nm off-axis four-mirror infrared telescope system. Ultra-low-expansion glass (ULE)...
Bin Liu, Huang-Rong Xu, Rong Liang et al.· Applied Sciences· 0 citations
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