10 August 2016 End-to-end simulations and planning of a small space telescopes: Galaxy Evolution Spectroscopic Explorer: a case study
Author Affiliations +
Abstract
Large astronomical missions are usually general-purpose telescopes with a suite of instruments optimized for different wavelength regions, spectral resolutions, etc. Their end-to-end (E2E) simulations are typically photons-in to flux-out calculations made to verify that each instrument meets its performance specifications. In contrast, smaller space missions are usually single-purpose telescopes, and their E2E simulations start with the scientific question to be answered and end with an assessment of the effectiveness of the mission in answering the scientific question. Thus, E2E simulations for small missions consist a longer string of calculations than for large missions, as they include not only the telescope and instrumentation, but also the spacecraft, orbit, and external factors such as coordination with other telescopes. Here, we illustrate the strategy and organization of small-mission E2E simulations using the Galaxy Evolution Spectroscopic Explorer (GESE) as a case study. GESE is an Explorer/Probe-class space mission concept with the primary aim of understanding galaxy evolution.

Operation of a small survey telescope in space like GESE is usually simpler than operations of large telescopes driven by the varied scientific programs of the observers or by transient events. Nevertheless, both types of telescopes share two common challenges: maximizing the integration time on target, while minimizing operation costs including communication costs and staffing on the ground. We show in the case of GESE how these challenges can be met through a custom orbit and a system design emphasizing simplification and leveraging information from ground-based telescopes.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sara Heap, Sara Heap, David Folta, David Folta, Qian Gong, Qian Gong, Joseph Howard, Joseph Howard, Tony Hull, Tony Hull, Lloyd Purves, Lloyd Purves, "End-to-end simulations and planning of a small space telescopes: Galaxy Evolution Spectroscopic Explorer: a case study", Proc. SPIE 9911, Modeling, Systems Engineering, and Project Management for Astronomy VI, 991117 (10 August 2016); doi: 10.1117/12.2234249; https://doi.org/10.1117/12.2234249
PROCEEDINGS
15 PAGES


SHARE
RELATED CONTENT

Evolution of galaxies and stars with CETUS
Proceedings of SPIE (July 05 2018)
The Galaxy Evolution Probe a concept for a mid...
Proceedings of SPIE (July 23 2018)
4MOST: 4-metre multi-object spectroscopic telescope
Proceedings of SPIE (October 04 2012)
The next generation of the Canada France Hawaii Telescope ...
Proceedings of SPIE (September 16 2012)

Back to Top