Design and characterization of a balloon-borne diffraction-limited submillimeter telescope platform for BLAST-TNG

Nathan P. Lourie, Francisco E. Angilé, Peter C. Ashton, Brian Catanzaro, Mark J. Devlin, Simon Dicker, Joy Didier, Bradley Dober, Laura M. Fissel, Nicholas Galitzki, Samuel Gordon, Jeffrey Klein, Ian Lowe, Philip Mauskopf, Federico Nati, Giles Novak, L. Javier Romualdez, Juan D. Soler, Paul A. Williams

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The Next Generation Balloon-borne Large Aperture Submillimeter Telescope (BLAST-TNG) is a submillimeter mapping experiment planned for a 28 day long-duration balloon (LDB) flight from McMurdo Station, Antarctica during the 2018-2019 season. BLAST-TNG will detect submillimeter polarized interstellar dust emission, tracing magnetic fields in galactic molecular clouds. BLAST-TNG will be the first polarimeter with the sensitivity and resolution to probe the ∼0.1 parsec-scale features that are critical to understanding the origin of structures in the interstellar medium. With three detector arrays operating at 250, 350, and 500 μm (1200, 857, and 600 GHz), BLAST-TNG will obtain diffraction-limited resolution at each waveband of 30, 41, and 59 arcseconds respectively. To achieve the submillimeter resolution necessary for its science goals, the BLAST-TNG telescope features a 2.5 m aperture carbon fiber composite primary mirror, one of the largest mirrors flown on a balloon platform. Successful performance of such a large telescope on a balloon-borne platform requires stiff, lightweight optical components and mounting structures. Through a combination of optical metrology and finite element modeling of thermal and mechanical stresses on both the telescope optics and mounting structures, we expect diffractionlimited resolution at all our wavebands. We expect pointing errors due to deformation of the telescope mount to be negligible. We have developed a detailed thermal model of the sun shielding, gondola, and optical components to optimize our observing strategy and increase the stability of the telescope over the flight. We present preflight characterization of the telescope and its platform.

Original languageEnglish (US)
Title of host publicationGround-Based and Airborne Telescopes VII
EditorsHeather K. Marshall, Jason Spyromilio
PublisherSPIE
Volume10700
ISBN (Electronic)9781510619531
DOIs
StatePublished - Jan 1 2018
EventGround-Based and Airborne Telescopes VII 2018 - Austin, United States
Duration: Jun 10 2018Jun 15 2018

Other

OtherGround-Based and Airborne Telescopes VII 2018
CountryUnited States
CityAustin
Period6/10/186/15/18

Fingerprint

Balloon
Balloons
balloons
Telescopes
Telescope
Diffraction
platforms
telescopes
diffraction
mounting
Mountings
Mirror
apertures
mirrors
Antarctica
Optical Metrology
balloon flight
Mechanical Stress
Polarimeter
Thermal Model

Keywords

  • BLAST-TNG
  • Carbon fiber telescope
  • Gondola
  • Metrology
  • Scientific ballooning
  • Star formation
  • Submillimeter optics
  • Telescope structures

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Lourie, N. P., Angilé, F. E., Ashton, P. C., Catanzaro, B., Devlin, M. J., Dicker, S., ... Williams, P. A. (2018). Design and characterization of a balloon-borne diffraction-limited submillimeter telescope platform for BLAST-TNG. In H. K. Marshall, & J. Spyromilio (Eds.), Ground-Based and Airborne Telescopes VII (Vol. 10700). [1070022] SPIE. https://doi.org/10.1117/12.2314380

Design and characterization of a balloon-borne diffraction-limited submillimeter telescope platform for BLAST-TNG. / Lourie, Nathan P.; Angilé, Francisco E.; Ashton, Peter C.; Catanzaro, Brian; Devlin, Mark J.; Dicker, Simon; Didier, Joy; Dober, Bradley; Fissel, Laura M.; Galitzki, Nicholas; Gordon, Samuel; Klein, Jeffrey; Lowe, Ian; Mauskopf, Philip; Nati, Federico; Novak, Giles; Romualdez, L. Javier; Soler, Juan D.; Williams, Paul A.

Ground-Based and Airborne Telescopes VII. ed. / Heather K. Marshall; Jason Spyromilio. Vol. 10700 SPIE, 2018. 1070022.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lourie, NP, Angilé, FE, Ashton, PC, Catanzaro, B, Devlin, MJ, Dicker, S, Didier, J, Dober, B, Fissel, LM, Galitzki, N, Gordon, S, Klein, J, Lowe, I, Mauskopf, P, Nati, F, Novak, G, Romualdez, LJ, Soler, JD & Williams, PA 2018, Design and characterization of a balloon-borne diffraction-limited submillimeter telescope platform for BLAST-TNG. in HK Marshall & J Spyromilio (eds), Ground-Based and Airborne Telescopes VII. vol. 10700, 1070022, SPIE, Ground-Based and Airborne Telescopes VII 2018, Austin, United States, 6/10/18. https://doi.org/10.1117/12.2314380
Lourie NP, Angilé FE, Ashton PC, Catanzaro B, Devlin MJ, Dicker S et al. Design and characterization of a balloon-borne diffraction-limited submillimeter telescope platform for BLAST-TNG. In Marshall HK, Spyromilio J, editors, Ground-Based and Airborne Telescopes VII. Vol. 10700. SPIE. 2018. 1070022 https://doi.org/10.1117/12.2314380
Lourie, Nathan P. ; Angilé, Francisco E. ; Ashton, Peter C. ; Catanzaro, Brian ; Devlin, Mark J. ; Dicker, Simon ; Didier, Joy ; Dober, Bradley ; Fissel, Laura M. ; Galitzki, Nicholas ; Gordon, Samuel ; Klein, Jeffrey ; Lowe, Ian ; Mauskopf, Philip ; Nati, Federico ; Novak, Giles ; Romualdez, L. Javier ; Soler, Juan D. ; Williams, Paul A. / Design and characterization of a balloon-borne diffraction-limited submillimeter telescope platform for BLAST-TNG. Ground-Based and Airborne Telescopes VII. editor / Heather K. Marshall ; Jason Spyromilio. Vol. 10700 SPIE, 2018.
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abstract = "The Next Generation Balloon-borne Large Aperture Submillimeter Telescope (BLAST-TNG) is a submillimeter mapping experiment planned for a 28 day long-duration balloon (LDB) flight from McMurdo Station, Antarctica during the 2018-2019 season. BLAST-TNG will detect submillimeter polarized interstellar dust emission, tracing magnetic fields in galactic molecular clouds. BLAST-TNG will be the first polarimeter with the sensitivity and resolution to probe the ∼0.1 parsec-scale features that are critical to understanding the origin of structures in the interstellar medium. With three detector arrays operating at 250, 350, and 500 μm (1200, 857, and 600 GHz), BLAST-TNG will obtain diffraction-limited resolution at each waveband of 30, 41, and 59 arcseconds respectively. To achieve the submillimeter resolution necessary for its science goals, the BLAST-TNG telescope features a 2.5 m aperture carbon fiber composite primary mirror, one of the largest mirrors flown on a balloon platform. Successful performance of such a large telescope on a balloon-borne platform requires stiff, lightweight optical components and mounting structures. Through a combination of optical metrology and finite element modeling of thermal and mechanical stresses on both the telescope optics and mounting structures, we expect diffractionlimited resolution at all our wavebands. We expect pointing errors due to deformation of the telescope mount to be negligible. We have developed a detailed thermal model of the sun shielding, gondola, and optical components to optimize our observing strategy and increase the stability of the telescope over the flight. We present preflight characterization of the telescope and its platform.",
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