Biospherical OCULLAR Prototype featured in NASA's Cutting Edge

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OCULLAR sunset

The prototype Ocean Color Underwater Low Light Advanced Radiometer (OCULLAR) resulted from a collaboration between Biospherical Instruments and NASA/GSFC scientist Dr. Stanford Hooker. OCULLAR is designed to measure light in natural waters under low-light conditions across multiple wavelength regions, from the ultraviolet to the near-infrared, with 14 decades of dynamic range. The instrument pairs a miniature photomultiplier tube (PMT) with a Biospherical microradiometer coupled to a silicon photodetector. A microprocessor embedded in the microradiometer activates the PMT when low-light conditions are detected, and is powered off under higher light conditions where the silicon detector microradiometers take over. The first field campaign using the prototype successfully collected data under moonlit skies, including using a BioSHADE (shadowband) accessory to measure direct and diffuse components of moonlight. In addition to OCULLAR systems supporting ocean color research, versions optimized for studying predation and other nocturnal behaviors are possible.

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Biospherical Instruments introduces the GUVis-3511

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GUVis-3511 radiometer configured with BioSHADE and BioGPS.GUVis-3511 radiometer configured with BioSHADE and BioGPS.Biospherical Instruments has just released the GUVis-3511, the latest member of BSI's line of atmospheric radiometers. The GUVis-3511 is based on BSI’s proprietary microradiometer technology and available with up to 19 channels, ranging from 305 to 1,640 nm.  The instrument can also be equipped with a shadowband accessory to determine the direct solar irradiance. Depending on configuration, the GUVis-3511 affords the measurement of the UV Index and the retrieval of aerosol optical depth, cloud optical thickness, and total column ozone. Click here for more information and here for a paper published in Atmospheric Measurement Techniques using the instrument for shipborne measurements of aerosol optical depth.


The OSPREy TM Is Here!

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A NASA Technical Memorandum (TM) on BSI's OSPREy system is now available for download. The TM, titled Optical Sensors for Planetary Radiant Energy (OSPREy): Calibration and Validation of Current and Next-Generation NASA Missions, NASA TM# 2012—215872, was written by both NASA and BSI personnel. It is the first of two TMs explaining what OSPREy is and how it works.

BSI awarded another NSF grant for UV Monitoring

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Biospherical’s Germar Bernhard was awarded a three year NSF grant titled “Ultraviolet Radiation in the Arctic: 2012-2015”.  This marks the 25th year that Biospherical has been monitoring UV radiation at high latitudes under NSF support.


BSI Presented at ASLO Meeting

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BSI presented a poster titled, "State-of-the-Art Optical Dat Collection using the Compact-Propulsion Option for Profiling Systems (C-PrOPS)," at the 2016 ASLO Ocean Sciences Meeting in New Orleans, Louisiana, in February. The poster session, which is based on data obtained with BSI's C-PrOPS, was presented by one of the coauthors who is also BSI staff and assists Dr. Stanford Hooker, of NASA's Goddard Space Flight Center in Greenbelt, Maryland on field campaigns.


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