OPASpec: a double spectrograph for the Original PolyOculus Array

Christina D. Moraitis; Stephen S. Eikenberry

doi:10.1117/12.3018947

18 July 2024 OPASpec: a double spectrograph for the Original PolyOculus Array

Christina D. Moraitis, Stephen S. Eikenberry

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 1309635 (2024) https://doi.org/10.1117/12.3018947
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

OPASpec is a double spectrograph covering the 360-880 nm range with a spectral resolution of R ~3000 on a single CMOS detector array. The blue channel (360-565 nm) and red channel (565-880 nm) combined cover this broad optical bandpass tailored to our observational goals for the Original PolyOculus Array (OPA). A dichroic splits incident light so that blue/red light are reflected/transmitted to the respective channel’s optical path. Each channel contains two separate collimating lenses, VPH transmission gratings, and a camera composed of custom lenses fabricated by Optimax. The two channels share the same detector plane — an Atik APX60 CMOS array. We present the design, fabrication, calibration, and first light of the instrument.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Christina D. Moraitis and Stephen S. Eikenberry "OPASpec: a double spectrograph for the Original PolyOculus Array", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 1309635 (18 July 2024); https://doi.org/10.1117/12.3018947

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