James Webb Telescope Issue - 16

Feature
Commanding the James Webb Space Telescope: OSS and Event-Driven Operations
V. Concluding Remarks
JWST's event-driven commanding architecture is a
significant leap in efficiency gain for space telescope
missions. Having a collection of onboard scripts to execute
activities routinely uplinked by the ground allows for
seamless commanding of the Observatory and quick
and appropriate responsiveness to anomalies. Complex
operations are made possible or significantly easier to
execute under this paradigm, rendering sophisticated
science activities easier to improve and support as needed.
With JWST's success under this operations model, the
Nancy Grace Roman Space Telescope (RST) will also adopt
event-driven operations and, in turn, lead to a new era of
operations for space-based observatories.
Acknowledgments
I would like to thank our OSS development technical lead,
Alan Welty, and OSS certification technical lead, Dean Zak,
for their general expertise in writing this article.
REFERENCES:
[1] Zonak, S., " Event-Driven Operations, OSS and JWST, " STScI
Newsletter, vol. 37, issue 2, 2020.
[2] Balzano, V. and Zak, D., " Event-driven James Webb Space
Telescope operations using on-board JavaScripts, " Proc. SPIE
6274, Advanced Software and Control for Astronomy, 62740A
(27 June 2006); doi: 10.1117/12.671403
[3] Balzano, V., Zak, D., and Whitman, W., " The care and feeding
of the JWST on-board event-driven system, " Proc. SPIE 7737,
Observatory Operations: Strategies, Processes, and Systems III,
77370I (29 July 2010); doi: 10.1117/12.855612
[4] Greenhouse, M., Balzano, V., Davila, P., Drury, M., Dunn, J., Glazer,
S., Greville, E., Henegar, G., Johnson, E., Lundquist, R., McCloskey,
J., Ohl IV, R., Rashford, R., and Voyton, M., " Status of the James
Webb Space Telescope Science Instrument Module System, " pp.
15-19, Proc. SPIE 8146, UV/Optical/IR Space Telescopes and
Instruments: Innovative Technologies and Concepts V, 814606
(14 September 2011); doi: 10.1117/12.895228
[5] Space Telescope Science Institute, JWST User Documentation
Homepage. JWST User Documentation. Retrieved June 10, 2022,
from https://jwst-docs.stsci.edu/
[6] Vila, M. B., Lambros, S., Diaz, D., Fu, H., Lee, S., Meza, L., Phillips,
K., Del Rosario, B., and Wu, J. C., " JWST cryo fine guidance closed
loop test results, " Proc. SPIE 10698, Space Telescopes and
Instrumentation 2018: Optical, Infrared, and Millimeter Wave,
106983R (12 July 2018); doi: 10.1117/12.2311516
[7] Keyes, C., Beck, T., Peña-Guerrero, M., de Oliveira, C., Ferruit, P.,
Jakobsen, P., Giardino, G., Sirianni, M., Boeker, T., Birkmann, S.,
Proffitt, C., " Target acquisition for multi-object spectroscopy with
JWST NIRSpec, " Proc. SPIE 10704, Observatory Operations:
Strategies, Processes, and Systems VII, 107041J (10 July 2018);
doi: 10.1117/12.2313712
Kyle Elliott is a senior software
engineer at the Space Telescope Science
Institute (STScI) in Baltimore, Maryland,
and has worked on the JWST mission
as a member of the OSS for over five
years - he currently specializes in FGS
and Spacecraft Bus commanding. He
has also provided development support
for the Roman Space Telescope science operations. He holds
an M.S. in space systems engineering from Johns Hopkins
University and B.S. degrees in physics and astronomy from
the University of Maryland.
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James Webb Telescope Issue

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