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Implementing a web camera system at the observatory to monitor dome shutter accumulation, mirror integrity, and access road conditions. The project involves selecting, installing, and testing camera systems for optimal performance under variable conditions.
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Surveillance Web Camera David Luis W.M. Keck Observatory Akamai Internship Program Mentor: Craig Nance, Chase Reed Home Institution: University of Hawaii at Manoa
Snow Build UpProblem • Dome shutter accumulation • Primary mirror • Instrument damage • Access road drift • Prevents access • Staff stranded on summit
Solution Webcamera to provide quick and accurate assessment and action Solution
Project Overview • Select a camera system • Set up infrastructure • Assemble, test, and install system • Test and verify camera performance
Operation Parameters in Enclosure • Temperature • 9 to 35 Celsius • Humidity • Based off humidity range of UKIRTs Sony Camera • 20-80% • Light Intensity • (50 microlux – 85klx)
Camera Research • Searching the Internet • Use two cameras • Color camera for day viewing • Monochrome camera for low-light viewing • Auto-iris needed • Final Decision • Sony SNC-CS3N digital color camera for day time viewing and color information • Super Circuits PC164C Micro Super Low-light monochrome camera for low-light viewing • Moxa Vport 2110 IP converter • Sola brand power supply
Camera Infrastructure • Conduits and flex • Distribution box • Ethernet lines • Power lines
Camera Installation • Device testing • Tested each • Tested all at once • Device placement • Hardware mounting • Ethernet connectors and testing • Power up!
Testing and Verification of Performance • morning sunlight mitigation • Sunlight on both cameras • spacer between cameras and move enclosure left • night viewing • viewed twinkling stars • what it is doing now • viewing dome and small part of road • future • automatic light detecting circuit with armature
Acknowledgements • Craig Nance, Chase Reed, Arnold Matsuda • Sarah Anderson • Malika Moutawakkil Bell • W.M. Keck Observatory • University of Hawaii at Manoa • Funding provided through the Center for Adaptive Optics, a National Science Foundation Science and Technology Center (STC), AST-987683