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Development of a medium size SWIR imaging telescope: integration, calibration and MTF measurement

Yilmaz, Ozgur; Selimoglu, Ozgur; Turk, Fethi


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{
  "DOI": "10.1117/12.2024506", 
  "abstract": "Development of an imaging telescope having a large mirror generally requires a sound infrastructure including expensive devices such as collimators and interferometers. In this paper we investigate the development and characterization of a medium size telescope (140 mm aperture) using simple techniques. Alignment was done with a mechanical measurement device. Detector was placed using an image of a ruled outside building. Radiometric calibration was done with open-sky images. And finally MTF was measured using stellar images. We found that MTF of our telescope is greater than %15 all along the detector at 20 lp/mm, which is the Nyquist frequency of 25 mu m pixel size. This shows that alignment and focus adjustments work well enough in the telescope. These simple techniques can be used for the development and characterization of a medium-size and medium-resolution imaging telescopes.", 
  "author": [
    {
      "family": "Yilmaz", 
      "given": " Ozgur"
    }, 
    {
      "family": "Selimoglu", 
      "given": " Ozgur"
    }, 
    {
      "family": "Turk", 
      "given": " Fethi"
    }
  ], 
  "id": "91471", 
  "issued": {
    "date-parts": [
      [
        2013, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Development of a medium size SWIR imaging telescope: integration, calibration and MTF measurement", 
  "type": "paper-conference"
}
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