YES - Model TSI-880 - Total Sky Imager
From Sky Imaging
The Model TSI-880 Total Sky Imager is an automatic, full-color sky imager system that provides real-time display of daytime sky conditions. At many sites, the accurate determination of sky conditions is a highly desirable yet rarely attainable goal. Traditionally, human observers reported sky conditions, resulting in considerable discrepancies from subjective observations. In practice, the use of human observers is not always feasible due to budgetary constraints.
The TSI-880 now replaces the need for these human observers under all weather conditions. Unlike the TSI-440 which require a NT workstation to process its images, the TSI-880 is a self-contained system which automatically processes images internally and can be optionally teamed with YESDAQ to store data from networks of remote imagers. In addition to present weather and sky monitoring, it provides and automated real-time panoramic image making it well suited for physical security applications.
- Embedded processor; no external workstation is required to operate system Open architecture uses JPEG file format and TCP/IP protocols; real-time data via the Internet permits remote monitoring
- Web browser-based interface supports MS-Windows, Macintosh, and UNIX users
- Reliable solid-state CCD technology with heavy duty removable imager assembly
- Readily interfaced to existing weather data collection systems via RS-232 or TCP/IP
- Environmentally sealed for long life
- Optional Data Storage Module permits remote operation and rapid data retrieval
- Cloud cover and present weather conditions
- General aviation meteorology
- Military border and air space monitoring
- Remote sensing and atmospheric research
- UV-B, pollution, and research
Images from the sky are captured via a solidstate CCD imager looking downward onto a heated, rotating hemispherical mirror. A shadowband on the mirror blocks the intense direct-normal light from the sun, thereby protecting the imager optics. An embedded image-processing algorithm captures and displays the images. Results are presented in real time via a web server, both statically and via panoramic views and animations.
The TSI-880 is a daytime imager. Once the sun rises above a user-selectable minimum solar zenith angle, image acquisition begins. The analysis step first masks out obstructions-the imager, its arm, and the sun-blocking band. Fractional cloud cover is determined by a sophisticated embedded algorithm. The system can be configured to operate either standalone or networked. In standalone mode, it can be interfaced directly to existing surface weather systems via its RS-232 serial interface. Or it can be networked to the Internet via its 10/100- BaseT or telephone modem (PPP) interfaces. Networked, users can view real-time processed images locally or remotely via a web browser.