TY - JOUR
T1 - Balloon-borne FIREBall-2 ultraviolet spectrograph stray light control based on nonsequential reverse modeling of on-sky data
AU - Brendel, Trenton
AU - Khan, Aafaque
AU - Agarwal, Simran
AU - Choi, Heejoo
AU - Kim, Daewook
AU - Hamden, Erika
AU - Picouet, Vincent
AU - Martin, D. Christopher
AU - Milliard, Bruno
AU - Schiminovich, David
AU - Nikzad, Shouleh
AU - Evrard, Jean
AU - Bray, Nicolas
AU - Montel, Johan
AU - Hoadley, Keri
AU - Miles, Drew M.
AU - Kyne, Gillian
AU - Li, Jessica
AU - Lin, Zeren
AU - Chung, Haeun
AU - Balard, Philippe
AU - Blanchard, Patrick
AU - Crabill, Marty
AU - Chevrier, Charles Antoine
AU - Peus, Alain
AU - Cevallos-Aleman, Ignacio
AU - Jones, Olivia
AU - Bradley, Harrison
AU - Kerkeser, Naz Ipek
AU - Werneken, Matthew
AU - Vibert, Didier
AU - Melso, Nicole
AU - Valls-Gabaud, David
N1 - Publisher Copyright: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 International License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
PY - 2022/10/1
Y1 - 2022/10/1
N2 - We present a comprehensive stray light analysis and mitigation strategy for the FIREBall-2 ultraviolet balloon telescope. Using nonsequential optical modeling, we identified the most problematic stray light paths, which impacted telescope performance during the 2018 flight campaign. After confirming the correspondence between the simulation results and postflight calibration measurements of stray light contributions, a system of baffles was designed to minimize stray light contamination. The baffles were fabricated and coated to maximize stray light collection ability. Once completed, the baffles will be integrated into FIREBall-2 and tested for performance preceding the upcoming flight campaign. Given our analysis results, we anticipate a substantial reduction in the effects of stray light.
AB - We present a comprehensive stray light analysis and mitigation strategy for the FIREBall-2 ultraviolet balloon telescope. Using nonsequential optical modeling, we identified the most problematic stray light paths, which impacted telescope performance during the 2018 flight campaign. After confirming the correspondence between the simulation results and postflight calibration measurements of stray light contributions, a system of baffles was designed to minimize stray light contamination. The baffles were fabricated and coated to maximize stray light collection ability. Once completed, the baffles will be integrated into FIREBall-2 and tested for performance preceding the upcoming flight campaign. Given our analysis results, we anticipate a substantial reduction in the effects of stray light.
KW - nonsequential ray tracing
KW - optomechanical design
KW - stray light analysis
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U2 - 10.1117/1.JATIS.8.4.048001
DO - 10.1117/1.JATIS.8.4.048001
M3 - Article
SN - 2329-4124
VL - 8
SP - 48001
JO - Journal of Astronomical Telescopes, Instruments, and Systems
JF - Journal of Astronomical Telescopes, Instruments, and Systems
IS - 4
ER -