The Sinusoidal Siemens Star target is consistent with the ISO12233:2014 standard. It is printed on matte paper. The modulation of the radial sinusoidal ...

Multispectralvs hyperspectral

Objet d'Art: Magnifying Glass - Photo by Solid CoulorsThe magnifying glass is one of the most ancient optical devices known to science.

Multispectralcamera for drone

The Multispectral Scanner (MSS) sensors were line scanning devices observing the Earth perpendicular to the orbital track. The cross-track scanning was accomplished by an oscillating mirror; six lines were scanned simultaneously in each of the four spectral bands for each mirror sweep. The forward motion of the satellite provided the along-track scan line progression.The first five Landsat satellites carried the MSS sensor which responded to Earth-reflected sunlight in four spectral bands. Landsat 3 carried an MSS sensor with an additional band, designated band 8, that responded to thermal (heat) infrared radiation.An MSS scene had an Instantaneous Field Of View (IFOV) of 68 meters in the cross-track direction by 83 meters in the along-track direction (223.0 by 272.3 feet respectively). To understand this concept consider a ground scene composed of a single 83 by 83 meter area. The scan monitor sensor ensures that the cross-track optical scan is 185 km at nominal altitude regardless of mirror scan nonlinearity or other perturbations of mirror velocity.Cross-track image velocity was nominally 6.82 meters per microsecond. After 9.958 microseconds, the 83 by 83 meter image has moved 67.9 meters. The sample taken at this instant represented 15 meters of previous information and 68 meters of new information.Therefore, the effective IFOV of the MSS detector in the cross-track direction was considered to be 68 meters which corresponds to a nominal picture element (pixel) ground area of 68 by 83 meters at the satellite nadir point. Using the effective IFOV in area calculation eliminates the overlap in area between adjacent pixel

Waveplate is an optical device that alters the polarization state of a light wave travelling through it. Two common types of waveplates ...

Mar 16, 2020 — A scanning objective lens provides the lowest magnification power of all objective lenses. 4x is a common magnification for scanning objectives ...

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Nov 25, 2022 — I have cameras from many brands, but they tend to collect in different 'categories'; Canon for DSLR, Fujifilm for compact mirrorless, Sony and ...

Allen wrenches are identifiable from their hexagonal cross-section, which is why some call these tools hex keys. Torx wrenches are star-shaped, meaning they won ...

Product description. The Cryo Tip / Tilt / Piston Stage (CTTPS) accepts 1/2″ or 1 optical elements and can be operated in a cryo-vacuum environment. It is ...

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The early Fresnel lenses were cut and polished in glass – an expensive process, and one limited to a few large grooves. Figure 3 shows a Fresnel lens, ...

A depth of field calculator is a useful photographic tool for assessing what camera settings are required to achieve a desired level of sharpness. For a ...