Thermal Design of ASTHROS

• Main Authors: Coker, Robert, Schulze, Erich, Bernasconi, Pietro, Kawamura, Jonathan, Pineda, Jorge, Siles, Jose
• Format: Conference Object
• Language: English
• Published: 50th International Conference on Environmental Systems 2021
• Subjects: balloon; Antarctica; THz observatory; fluid loop; Antarctic; Antarc*
• Online Access: https://hdl.handle.net/2346/87318

Robert Coker, JHU/APL Erich Schulze, JHU/APL Pietro Bernasconi, JHU/APL Jonathan Kawamura, JPL Jorge Pineda, JPL Jose Siles, JPL ICES109: Thermal Control of High Altitude Balloon Systems The 50th International Conference on Environmental Systems was held virtually on 12 July 2021 through 14 July 2021. The Astrophysics Stratospheric Telescope for High Spectral Resolution Observations at Submillimeter-wavelengths (ASTHROS), is a 2.5-m balloon-borne observatory that will make the first spectrally-resolved high spatial resolution 3D map of ionized gas in Galactic and extra-galactic star forming regions via the THz fine structure lines of ionized nitrogen and other nearby spectral lines. Building on the Stratospheric THz Observatory (STO-2) and Galactic/Extragalactic ULDB Spectroscopic Terahertz Observatory (GUSTO) missions, ASTHROS, launching in 2023 will, over its 21-day Antarctic mission, map two template Galactic star forming regions and the entire disk of the M83 barred spiral galaxy at high angular resolution. The Applied Physics Laboratory (APL) will build the ASTHROS gondola and thermal control system. The latter will use a fluid loop and radiator very similar to that used by APL on GUSTO. This paper will present an overview of the thermal design of the ASTHROS gondola and telescope.