DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hammar, Arvid | ko |
dc.contributor.author | Park, Woojin | ko |
dc.contributor.author | Chang, Seunghyuk | ko |
dc.contributor.author | Pak, Soojong | ko |
dc.contributor.author | Emrich, Anders | ko |
dc.contributor.author | Stake, Jan | ko |
dc.date.accessioned | 2019-03-19T01:50:50Z | - |
dc.date.available | 2019-03-19T01:50:50Z | - |
dc.date.created | 2019-03-11 | - |
dc.date.issued | 2019-02 | - |
dc.identifier.citation | APPLIED OPTICS, v.58, no.6, pp.1393 - 1399 | - |
dc.identifier.issn | 1559-128X | - |
dc.identifier.uri | http://hdl.handle.net/10203/251793 | - |
dc.description.abstract | We present the development of a compact f/7.3 (D = 35 mm) three-mirror reflective telescope for the atmospheric-research microsatellite Mesospheric Airglow/Aerosol Tomography Spectroscopy (MATS). The telescope design was driven by the end users' need for a reflective wide-field (5.67 degrees x 0.91 degrees) optic with high stray light rejection and six detection channels with separate image sensors, operating at wavelengths 270-772 nm. For the first time, a design method for wide-field off-axis telescopes-in which linear astigmatism is eliminated- was applied and tested in practice. Single-point diamond turning was used to produce two sets of 37-110 mm large free-form aluminum mirrors with surface figure errors and roughness values of 34-62 nm (RMS)/193497 nm (PV) and 2.8-3.5 nm (RMS), respectively. A method that combines precise machining and geometry measurements (using a coordinate measuring machine) was employed to fabricate an aluminum structure to accurately position the mirrors without the need for manual alignment. The telescope was tested with a network of plate beamsplitters and filters, which define the spectral selection for the six detection channels. Imaging performance measurements were carried out using a reflective off-axis collimator, which projects imaging targets at infinite focus. A modulation transfer function (MTF) value of 0.45 at 20 lp/mm was measured at similar to 760 nm (diffraction limit: 0.85) using a slanted edge target. By modeling the measured mirror surfaces in optical design software, a reoptimization of the mirror positions could be performed and an improved MTF of similar to 0.75 at 20 lp/mm was predicted. The results demonstrate design- and building methods that can be utilized to make off-axis telescopes for a vast range of applications. (C) 2019 Optical Society of America | - |
dc.language | English | - |
dc.publisher | OPTICAL SOC AMER | - |
dc.title | Wide-field off-axis telescope for the Mesospheric Airglow/Aerosol Tomography Spectroscopy satellite | - |
dc.type | Article | - |
dc.identifier.wosid | 000459137900013 | - |
dc.identifier.scopusid | 2-s2.0-85061867246 | - |
dc.type.rims | ART | - |
dc.citation.volume | 58 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | 1393 | - |
dc.citation.endingpage | 1399 | - |
dc.citation.publicationname | APPLIED OPTICS | - |
dc.identifier.doi | 10.1364/AO.58.001393 | - |
dc.contributor.localauthor | Chang, Seunghyuk | - |
dc.contributor.nonIdAuthor | Hammar, Arvid | - |
dc.contributor.nonIdAuthor | Park, Woojin | - |
dc.contributor.nonIdAuthor | Pak, Soojong | - |
dc.contributor.nonIdAuthor | Emrich, Anders | - |
dc.contributor.nonIdAuthor | Stake, Jan | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | 3-MIRROR TELESCOPES | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | ASTIGMATISM | - |
dc.subject.keywordPlus | INSTRUMENT | - |
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