Slow-Scan Television System for a Balloon-Borne Telescope

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: A narrow-band television system for space observation utilizing an image-memory tube has been developed and used as a finder system for a balloon-borne solar telescope. Slow-scan video signal from the camera or FM receiver is supplied to a slow-scan monitor. The pictures on the screen are recorded by a motor-driven 35mm film camera. The slow-scan pictures are converted to the standard scanning rate by a scan converter with two memory tubes. This system has been used with 15,000 m3 balloons since 1971 as a finder system for a balloon-borne solar telescope jointly with a group of the Tokyo Astronomical Observatory, University of Tokyo. The image of the telescope is divided by a half mirror. One optical path is for an on-board motor- driven film camera. The other is for the television camera. The usefulness of the television system as a real-time finder was proved by the test flight in 1971 using a 48-mm-diam solar telescope. In 1972 and 1973, 100-mm-diam and 17-m composite-focal-length solar telescope was used to make photographs of the solar surface.
Publication Date: 1975-10-01
DOI: 10.5594/J10596
Link: https://doi.org/10.5594/J10596
Author(s): Noboru Niwa

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Noboru Niwa; Slow-Scan Television System for a Balloon-Borne Telescope, Journal of the SMPTE ( Volume: 84, Issue: 10, October 1975); SMPTE, 1975. Available at https://doi.org/10.5594/J10596

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Noboru Niwa; Slow-Scan Television System for a Balloon-Borne Telescope, Journal of the SMPTE ( Volume: 84, Issue: 10, October 1975); SMPTE, 1975. Available at https://doi.org/10.5594/J10596

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Noboru Niwa; Slow-Scan Television System for a Balloon-Borne Telescope, Journal of the SMPTE ( Volume: 84, Issue: 10, October 1975); SMPTE, 1975. Available at https://doi.org/10.5594/J10596

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<span class="citation">Noboru Niwa; <cite>Slow-Scan Television System for a Balloon-Borne Telescope</cite>, Journal of the SMPTE ( Volume: 84, Issue: 10, October 1975); SMPTE, 1975. Available at <a href="https://doi.org/10.5594/J10596" target="_blank" rel="noopener">https://doi.org/10.5594/J10596</a></span>

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Noboru Niwa; Slow-Scan Television System for a Balloon-Borne Telescope, Journal of the SMPTE ( Volume: 84, Issue: 10, October 1975); SMPTE, 1975
doi: 10.5594/J10596
url: https://doi.org/10.5594/J10596

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<li>
Noboru Niwa; <cite id="bib-10-5594-j10596">Slow-Scan Television System for a Balloon-Borne Telescope</cite>, Journal of the SMPTE ( Volume: 84, Issue: 10, October 1975); SMPTE, 1975
<span class="doi">10.5594/J10596</span>
</li>