3 papers
astro-ph.IM2026
Design of an atmospheric dispersion corrector and double scrambler for improved fiber coupling and illumination uniformity for the HET HRS
Devika K Divakar, Joseph Strubhar, Andrew Pinckney +1
The Hobby--Eberly Telescope High Resolution Spectrograph (HET--HRS) is undergoing a major instrument upgrade to improve its performance over the 360--1000 nm wavelength range. As p…
astro-ph.IM2026
Optomechanical design of an ADC and image rotator for the HJST Coudé Spectrograph at McDonald Observatory
Devika K Divakar, Phillip MacQueen, Andrew Pinckney +1
High-resolution spectroscopic observations require stable slit illumination and mitigation of atmospheric refraction effects that degrade throughput and spectral fidelity. We prese…
astro-ph.IM2025
Design overview of the fiber feed for the Hobby-Eberly telescope's HRS
Devika K Divakar, Phillip MacQueen, Joseph Strubhar
We present the redesign of the fiber feed for the High Resolution Spectrograph (HRS) at the Hobby Eberly Telescope (HET). The upgrade incorporates a static atmospheric dispersion c…