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  2. Google Earth - Wikipedia

    en.wikipedia.org/wiki/Google_Earth

    Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery.The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles.

  3. Satellite imagery - Wikipedia

    en.wikipedia.org/wiki/Satellite_imagery

    GeoEye's GeoEye-1 satellite was launched on September 6, 2008. [9] The GeoEye-1 satellite has high resolution imaging system and is able to collect images with a ground resolution of 0.41 meters (16 inches) in panchromatic or black and white mode. It collects multispectral or color imagery at 1.65-meter resolution or about 64 inches.

  4. Advanced Camera for Surveys - Wikipedia

    en.wikipedia.org/wiki/Advanced_Camera_for_Surveys

    The first was a commandable coronagraphic mask that included two occulting spots, one of diameter 1.8" at the center of the field and the other of diameter 3.0" nearer to a corner. The first spot was the most popular of the two, for example, for imaging circumstellar disks around nearby bright stars or the host galaxies of luminous quasars.

  5. Sigma SA-mount - Wikipedia

    en.wikipedia.org/wiki/Sigma_SA-mount

    There were two precursors to the introduction of SA-mount cameras, the manual-focus Sigma Mark-I in 1976, which still featured a M42 screw lens mount, and the SA-1 of 1983 with Pentax K-mount. Mechanically, the (inner) SA-mount is similar to the Pentax K-mount as well, [ 2 ] but with a flange focal distance of 44.00 mm, identical to that of the ...

  6. List of digital camera brands - Wikipedia

    en.wikipedia.org/wiki/List_of_digital_camera_brands

    Coolpix compact digital cameras, Nikon 1 series MILCs, and D-series DSLRs: OM System: Japan: C-, D-, FE-series, Tough and Stylus compact digital cameras; E-series DSLRs based on the Four Thirds System; and two series of mirrorless interchangeable-lens cameras based on the Micro Four Thirds System, the PEN digital series and OM-D series(Former ...

  7. DubaiSat-1 - Wikipedia

    en.wikipedia.org/wiki/DubaiSat-1

    The United Nations also used DubaiSat-1 images to monitor relief efforts following the 2011 Tōhoku earthquake and tsunami in Japan. [11] [12] The satellite accommodates two main payloads. The primary payload is the Dubai Medium Aperture Camera (DMAC), and the secondary and experimental payload, the Space Radiation Monitor (SRM). [3]

  8. 16K resolution - Wikipedia

    en.wikipedia.org/wiki/16K_resolution

    Example video in 16K (16000 × 9000 pixels) A VR video in 16K (16000 × 8000 pixels) 16K resolution is a display resolution with approximately 16,000 pixels horizontally. The most commonly discussed 16K resolution is 15360 × 8640, which doubles the pixel count of 8K UHD in each dimension, for a total of four times as many pixels. [1]

  9. Satellite phone - Wikipedia

    en.wikipedia.org/wiki/Satellite_phone

    One algorithm (used in GMR-1 phones) is a variant of the A5/2 algorithm used in GSM (used in common mobile phones), and both are vulnerable to cipher-text only attacks. The GMR-2 standard introduced a new encryption algorithm which the same research team also cryptanalysed successfully. Thus satellite phones need additional encrypting if used ...