&lt;title&gt;Aluminium-based high-resolution camera for a small satellite&lt;/title&gt;

Yang, Hyunjo; Choi, Young‐Wan; Kang, Myung-Suk; Jeong, Seong-Keun; Yang, Seung-Uk; Kim, Ee-Eul; Rasheed, Ad. Aziz Ad.

doi:10.1117/12.451859

Cited by 6 publications

(3 citation statements)

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“…Before it is launched, knife-edge scanning method [6] is commonly used with the camera in the optics lab (or ideally in a thermal vacuum chamber) as it can obtain a detailed edge-spread function (ESF) with the resolution smaller than the size of the CCD pixel. The knife-edge scanning system MTF measurement scheme is described in Figure 5.…”

Section: Measurement Setup and Equipmentsmentioning

confidence: 99%

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Pre-flight performance characterization of RazakSAT medium-sized aperture camera (MAC)

Choi¹,

Kim²,

Kang³

et al. 2005

SPIE Proceedings

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Pre-flight performance has been characterized on the Medium-sized Aperture Camera (MAC) of the RazakSAT: capable of Earth observation at 2.5 m resolution and 20 km swath width. Topics discussed in this paper include measurements of system modulation transfer function (MTF) and pixel lines-of-sight (LOS); characterization of focal plane assembly (FPA) and signal processing electronics; end-to-end imaging. The MTF was obtained with knife-edge scanning technique, which is also used to align the FPA. For band-to-band registration, relative pixel LOS was measured using theodolite and effective focal length of the telescope was derived from the measurement. For the FPA and signal processing module, dark reference, pixel-to-pixel response variation and response linearity have been quantified. The end-to-end imaging tests were done to check the imaging function before the launch, by scanning a slide target at the focus of the collimator.

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Section: Measurement Setup and Equipmentsmentioning

confidence: 99%

“…1 RazakSAT is a small satellite with a hexagonal frame structure. Using the heritages of successful KITSAT-3 5 and STSAT-1 (formerly known as KAISTSAT-4 6 …”

Section: Introductionmentioning

confidence: 99%

Pre-flight performance characterization of RazakSAT medium-sized aperture camera (MAC)

Choi¹,

Kim²,

Kang³

et al. 2005

SPIE Proceedings

Self Cite

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show abstract

“…During TM development, however, it was found that advantages of aluminum mirrors in terms of fabrication time and cost were not significant compared with traditional low-expansion glass mirrors. In addition, an all-aluminum optical system requires a rigorous active thermal control for athermalization [2].…”

Section: Design Modificationmentioning

confidence: 99%