{"id":1355,"date":"2013-11-06T18:47:08","date_gmt":"2013-11-06T18:47:08","guid":{"rendered":"https:\/\/fishlarvae.org\/?page_id=1355"},"modified":"2015-11-11T18:58:36","modified_gmt":"2015-11-11T18:58:36","slug":"measurement-of-light","status":"publish","type":"page","link":"https:\/\/fishlarvae.org\/measurement-of-light\/","title":{"rendered":"Measurement of light"},"content":{"rendered":"<script type='text\/javascript' src='https:\/\/d1bxh8uas1mnw7.cloudfront.net\/assets\/embed.js'><\/script>[vc_row][vc_column width=&#8221;2\/3&#8243;][\/vc_column][vc_column width=&#8221;1\/3&#8243;][vc_button title=&#8221;Back&#8221; color=&#8221;blue&#8221; align=&#8221;right&#8221; href=&#8221;\/facilities-equipment\/&#8221;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;2\/3&#8243;][vc_column_text]\n<div class=\"ngg-galleryoverview ngg-slideshow\"\n\tid=\"ngg-slideshow-f5cb86ff35ce972548f7f947525cdf93-8828220930\"\n\tdata-gallery-id=\"f5cb86ff35ce972548f7f947525cdf93\"\n\tstyle=\"max-width: 500px;\n\t\t\tmax-height: 500px;\n\t\t\tdisplay: none;\">\n\n\t\n\t\t<a href=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/6inchsphereweb.jpg\"\n\t\t\ttitle=\"&lt;h5&gt;Standard 6 inch integrating sphere&lt;\/h5&gt;The OL IS-670 consists of a 6-inch diameter, PTFE coated, integrating sphere with a 90\u00b0 entrance port to exit port configuration. The integrating sphere can easily be mounted at the entrance port of the OL Series Monochromators and can be rotated 360\u00b0 for horizontal or vertical viewing. Either configuration maintains the nearly ideal cosine response of the OL IS-670. The design of the sphere and the geometries of its components (entrance port, baffle, etc.) enable the OL IS-670 to achieve a near-perfect cosine response. The sphere\u2019s entrance port is covered with the OL ISA-2DW 2&quot; diameter dome window. The OL ISA-2DW is made of uv-grade fused silica which transmits over the entire 200 to 2500 nm range. The window helps protect the white coating from dust, dirt and other contaminants. The window&#039;s dome shape prevents adverse effects to the sphere&#039;s near-perfect cosine response. The near-perfect cosine response is essential when measuring radiant flux of large area sources, measuring incident flux over a 2p steradian field of view, and certain types of intense arc lamps, solar simulators, and sunlight. The OL IS-670, which is coated with a PTFE based powder, is useful over the wavelength range of 200 to 2500 nm.\"\n\t\t\tdata-src=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/6inchsphereweb.jpg\"\n\t\t\tdata-thumbnail=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/thumbs\/thumbs_6inchsphereweb.jpg\"\n\t\t\tdata-image-id=\"356\"\n\t\t\tdata-title=\"6inchsphereweb\"\n\t\t\tdata-description=\"&lt;h5&gt;Standard 6 inch integrating sphere&lt;\/h5&gt;The OL IS-670 consists of a 6-inch diameter, PTFE coated, integrating sphere with a 90\u00b0 entrance port to exit port configuration. The integrating sphere can easily be mounted at the entrance port of the OL Series Monochromators and can be rotated 360\u00b0 for horizontal or vertical viewing. Either configuration maintains the nearly ideal cosine response of the OL IS-670. The design of the sphere and the geometries of its components (entrance port, baffle, etc.) enable the OL IS-670 to achieve a near-perfect cosine response. The sphere\u2019s entrance port is covered with the OL ISA-2DW 2&quot; diameter dome window. The OL ISA-2DW is made of uv-grade fused silica which transmits over the entire 200 to 2500 nm range. The window helps protect the white coating from dust, dirt and other contaminants. The window&#039;s dome shape prevents adverse effects to the sphere&#039;s near-perfect cosine response. The near-perfect cosine response is essential when measuring radiant flux of large area sources, measuring incident flux over a 2p steradian field of view, and certain types of intense arc lamps, solar simulators, and sunlight. The OL IS-670, which is coated with a PTFE based powder, is useful over the wavelength range of 200 to 2500 nm.\"\n\t\t\tclass=\"ngg-fancybox\" rel=\"f5cb86ff35ce972548f7f947525cdf93\">\n\n\t\t\t<img data-image-id='356'\n\t\t\t\ttitle=\"&lt;h5&gt;Standard 6 inch integrating sphere&lt;\/h5&gt;The OL IS-670 consists of a 6-inch diameter, PTFE coated, integrating sphere with a 90\u00b0 entrance port to exit port configuration. The integrating sphere can easily be mounted at the entrance port of the OL Series Monochromators and can be rotated 360\u00b0 for horizontal or vertical viewing. Either configuration maintains the nearly ideal cosine response of the OL IS-670. The design of the sphere and the geometries of its components (entrance port, baffle, etc.) enable the OL IS-670 to achieve a near-perfect cosine response. The sphere\u2019s entrance port is covered with the OL ISA-2DW 2&quot; diameter dome window. The OL ISA-2DW is made of uv-grade fused silica which transmits over the entire 200 to 2500 nm range. The window helps protect the white coating from dust, dirt and other contaminants. The window&#039;s dome shape prevents adverse effects to the sphere&#039;s near-perfect cosine response. The near-perfect cosine response is essential when measuring radiant flux of large area sources, measuring incident flux over a 2p steradian field of view, and certain types of intense arc lamps, solar simulators, and sunlight. The OL IS-670, which is coated with a PTFE based powder, is useful over the wavelength range of 200 to 2500 nm.\"\n\t\t\t\talt=\"6inchsphereweb\"\n\t\t\t\tsrc=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/6inchsphereweb.jpg\"\n\t\t\t\tstyle=\"max-height: 480px;\"\/>\n\t\t<\/a>\n\n\t\t\n\t\t<a href=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/domeunderplexiglasweb.jpg\"\n\t\t\ttitle=\"&lt;h5&gt;Submersible 4 inch integrating sphere&lt;\/h5&gt;This is the submersible integrating sphere (OL 470WP) which is attached to our Optronic Laboratories OL-754 high resolution scanning spectroradiometer. Spectroradiometry is used to measure light (intensity and quality), in the air and underwater. We use a high-resolution portable scanning spectroradiometer to measure the light field in natural environments, sea pens, indoor aquaculture systems, and experimental settings. The instrument can also be used to measure spectral transmission through materials and\/or organisms, and reflectance off surfaces. In this way, we determine what intensity and quality of light to mimic in experiments and in rearing environments.\"\n\t\t\tdata-src=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/domeunderplexiglasweb.jpg\"\n\t\t\tdata-thumbnail=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/thumbs\/thumbs_domeunderplexiglasweb.jpg\"\n\t\t\tdata-image-id=\"357\"\n\t\t\tdata-title=\"domeunderplexiglasweb\"\n\t\t\tdata-description=\"&lt;h5&gt;Submersible 4 inch integrating sphere&lt;\/h5&gt;This is the submersible integrating sphere (OL 470WP) which is attached to our Optronic Laboratories OL-754 high resolution scanning spectroradiometer. Spectroradiometry is used to measure light (intensity and quality), in the air and underwater. We use a high-resolution portable scanning spectroradiometer to measure the light field in natural environments, sea pens, indoor aquaculture systems, and experimental settings. The instrument can also be used to measure spectral transmission through materials and\/or organisms, and reflectance off surfaces. In this way, we determine what intensity and quality of light to mimic in experiments and in rearing environments.\"\n\t\t\tclass=\"ngg-fancybox\" rel=\"f5cb86ff35ce972548f7f947525cdf93\">\n\n\t\t\t<img data-image-id='357'\n\t\t\t\ttitle=\"&lt;h5&gt;Submersible 4 inch integrating sphere&lt;\/h5&gt;This is the submersible integrating sphere (OL 470WP) which is attached to our Optronic Laboratories OL-754 high resolution scanning spectroradiometer. Spectroradiometry is used to measure light (intensity and quality), in the air and underwater. We use a high-resolution portable scanning spectroradiometer to measure the light field in natural environments, sea pens, indoor aquaculture systems, and experimental settings. The instrument can also be used to measure spectral transmission through materials and\/or organisms, and reflectance off surfaces. In this way, we determine what intensity and quality of light to mimic in experiments and in rearing environments.\"\n\t\t\t\talt=\"domeunderplexiglasweb\"\n\t\t\t\tsrc=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/domeunderplexiglasweb.jpg\"\n\t\t\t\tstyle=\"max-height: 480px;\"\/>\n\t\t<\/a>\n\n\t\t\n\t\t<a href=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/ol754.jpg\"\n\t\t\ttitle=\"&lt;h5&gt;Optronic Laboratories OL 754&lt;\/h5&gt;The Optronic Laboratories OL 754 Portable UV-Visible-NIR Spectroradiometers are a series of compact, portable, double monochromator based spectroradiometers capable of making highly accurate spectroradiometric measurements in the laboratory or in the field. The optics head of our OL 754-PMT is optimized for high performance over the 200 to 800 nm wavelength region. The detector consists of a high sensitivity, temperature stabilized, S-20 response photomultiplier. The double monochromator utilizes concave, holographic gratings with peak efficiencies at 300 nm. The 5 sets of fixed slits provided enable the user to vary the half bandwidth from 1 to 10 nm. The optics head is operated using a separate computer-interfaced controller that houses all data acquisition and control electronics. The system can measure spectral irradiance, radiance, transmittance or reflectance. Fast and accurate spectroradiometric measurements can be made in the laboratory or outdoors (including underwater, to a depth of 15 m) with total portability under demanding field conditions. Pictured here are the OL 754 controller (under the laptop computer) and the optics head with the standard 6 inch integrating sphere attached to it. Our own OL 754 is fitted securely into a custom-made foam-padded and fan-ventilated aluminum transport case. Our OL 754 is equipped with a 6 inch PTFE coated integrating sphere with near-ideal cosine response for spectral irradiance measurements of the most demanding light sources. This sphere may be removed and replaced with the OL-470WP 4 inch submersible integrating sphere or the OL IS-1000 6 inch integrating sphere-based reflectance\/transmittance attachment which allows measurement of the specular reflectance of surfaces as a function of both wavelength and angle of incidence. The OL IS-1000 also allows measurment of both regular (linear) and diffuse (scattered) transmittance. These accessories are pictured seperately.\"\n\t\t\tdata-src=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/ol754.jpg\"\n\t\t\tdata-thumbnail=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/thumbs\/thumbs_ol754.jpg\"\n\t\t\tdata-image-id=\"358\"\n\t\t\tdata-title=\"ol754\"\n\t\t\tdata-description=\"&lt;h5&gt;Optronic Laboratories OL 754&lt;\/h5&gt;The Optronic Laboratories OL 754 Portable UV-Visible-NIR Spectroradiometers are a series of compact, portable, double monochromator based spectroradiometers capable of making highly accurate spectroradiometric measurements in the laboratory or in the field. The optics head of our OL 754-PMT is optimized for high performance over the 200 to 800 nm wavelength region. The detector consists of a high sensitivity, temperature stabilized, S-20 response photomultiplier. The double monochromator utilizes concave, holographic gratings with peak efficiencies at 300 nm. The 5 sets of fixed slits provided enable the user to vary the half bandwidth from 1 to 10 nm. The optics head is operated using a separate computer-interfaced controller that houses all data acquisition and control electronics. The system can measure spectral irradiance, radiance, transmittance or reflectance. Fast and accurate spectroradiometric measurements can be made in the laboratory or outdoors (including underwater, to a depth of 15 m) with total portability under demanding field conditions. Pictured here are the OL 754 controller (under the laptop computer) and the optics head with the standard 6 inch integrating sphere attached to it. Our own OL 754 is fitted securely into a custom-made foam-padded and fan-ventilated aluminum transport case. Our OL 754 is equipped with a 6 inch PTFE coated integrating sphere with near-ideal cosine response for spectral irradiance measurements of the most demanding light sources. This sphere may be removed and replaced with the OL-470WP 4 inch submersible integrating sphere or the OL IS-1000 6 inch integrating sphere-based reflectance\/transmittance attachment which allows measurement of the specular reflectance of surfaces as a function of both wavelength and angle of incidence. The OL IS-1000 also allows measurment of both regular (linear) and diffuse (scattered) transmittance. These accessories are pictured seperately.\"\n\t\t\tclass=\"ngg-fancybox\" rel=\"f5cb86ff35ce972548f7f947525cdf93\">\n\n\t\t\t<img data-image-id='358'\n\t\t\t\ttitle=\"&lt;h5&gt;Optronic Laboratories OL 754&lt;\/h5&gt;The Optronic Laboratories OL 754 Portable UV-Visible-NIR Spectroradiometers are a series of compact, portable, double monochromator based spectroradiometers capable of making highly accurate spectroradiometric measurements in the laboratory or in the field. The optics head of our OL 754-PMT is optimized for high performance over the 200 to 800 nm wavelength region. The detector consists of a high sensitivity, temperature stabilized, S-20 response photomultiplier. The double monochromator utilizes concave, holographic gratings with peak efficiencies at 300 nm. The 5 sets of fixed slits provided enable the user to vary the half bandwidth from 1 to 10 nm. The optics head is operated using a separate computer-interfaced controller that houses all data acquisition and control electronics. The system can measure spectral irradiance, radiance, transmittance or reflectance. Fast and accurate spectroradiometric measurements can be made in the laboratory or outdoors (including underwater, to a depth of 15 m) with total portability under demanding field conditions. Pictured here are the OL 754 controller (under the laptop computer) and the optics head with the standard 6 inch integrating sphere attached to it. Our own OL 754 is fitted securely into a custom-made foam-padded and fan-ventilated aluminum transport case. Our OL 754 is equipped with a 6 inch PTFE coated integrating sphere with near-ideal cosine response for spectral irradiance measurements of the most demanding light sources. This sphere may be removed and replaced with the OL-470WP 4 inch submersible integrating sphere or the OL IS-1000 6 inch integrating sphere-based reflectance\/transmittance attachment which allows measurement of the specular reflectance of surfaces as a function of both wavelength and angle of incidence. The OL IS-1000 also allows measurment of both regular (linear) and diffuse (scattered) transmittance. These accessories are pictured seperately.\"\n\t\t\t\talt=\"ol754\"\n\t\t\t\tsrc=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/ol754.jpg\"\n\t\t\t\tstyle=\"max-height: 480px;\"\/>\n\t\t<\/a>\n\n\t\t\n\t\t<a href=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/ol754powersupplyweb.jpg\"\n\t\t\ttitle=\"&lt;h5&gt;Ultra-stable power supply for calibrations&lt;\/h5&gt;The OL 65A, used to operate the OL 752-10 standard lamp, is a microprocessor controlled, precision DC current source. This programmable DC current sources is specifically designed for operation of tungsten filament photometric, radiometric, and spectroradiometric standards. In addition to providing a highly accurate output current (\u00b10.01% current accuracy) the supply has a number of special design features which are highly desirable when operating valuable lamp standards. Note: Tungsten lamp standards must be operated at their specified calibration current in order to realize the accuracy of the standard. A small error in setting the lamp current can induce a sizable, wavelength dependent error in the spectral output of the lamp.\"\n\t\t\tdata-src=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/ol754powersupplyweb.jpg\"\n\t\t\tdata-thumbnail=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/thumbs\/thumbs_ol754powersupplyweb.jpg\"\n\t\t\tdata-image-id=\"359\"\n\t\t\tdata-title=\"ol754powersupplyweb\"\n\t\t\tdata-description=\"&lt;h5&gt;Ultra-stable power supply for calibrations&lt;\/h5&gt;The OL 65A, used to operate the OL 752-10 standard lamp, is a microprocessor controlled, precision DC current source. This programmable DC current sources is specifically designed for operation of tungsten filament photometric, radiometric, and spectroradiometric standards. In addition to providing a highly accurate output current (\u00b10.01% current accuracy) the supply has a number of special design features which are highly desirable when operating valuable lamp standards. Note: Tungsten lamp standards must be operated at their specified calibration current in order to realize the accuracy of the standard. A small error in setting the lamp current can induce a sizable, wavelength dependent error in the spectral output of the lamp.\"\n\t\t\tclass=\"ngg-fancybox\" rel=\"f5cb86ff35ce972548f7f947525cdf93\">\n\n\t\t\t<img data-image-id='359'\n\t\t\t\ttitle=\"&lt;h5&gt;Ultra-stable power supply for calibrations&lt;\/h5&gt;The OL 65A, used to operate the OL 752-10 standard lamp, is a microprocessor controlled, precision DC current source. This programmable DC current sources is specifically designed for operation of tungsten filament photometric, radiometric, and spectroradiometric standards. In addition to providing a highly accurate output current (\u00b10.01% current accuracy) the supply has a number of special design features which are highly desirable when operating valuable lamp standards. Note: Tungsten lamp standards must be operated at their specified calibration current in order to realize the accuracy of the standard. A small error in setting the lamp current can induce a sizable, wavelength dependent error in the spectral output of the lamp.\"\n\t\t\t\talt=\"ol754powersupplyweb\"\n\t\t\t\tsrc=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/ol754powersupplyweb.jpg\"\n\t\t\t\tstyle=\"max-height: 480px;\"\/>\n\t\t<\/a>\n\n\t\t\n\t\t<a href=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/ol-is1000web.jpg\"\n\t\t\ttitle=\"&lt;h5&gt;Integrating sphere for spectral reflectance\/transm&lt;\/h5&gt;The IS-1000 is a 6-inch integrating sphere reflectance\/transmittance attachment for measuring diffuse spectral reflectance and transmittance of various materials over all or part of the entire wavelength range of 250 to 2500 nm. It is especially useful for measuring optical properties of leaves. The IS-1000 is used in combination with the OL Series 752-10 Plug-In Irradiance Standards and the OL Series 750 or Series 754 Spectroradiometers.\"\n\t\t\tdata-src=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/ol-is1000web.jpg\"\n\t\t\tdata-thumbnail=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/thumbs\/thumbs_ol-is1000web.jpg\"\n\t\t\tdata-image-id=\"360\"\n\t\t\tdata-title=\"ol-is1000web\"\n\t\t\tdata-description=\"&lt;h5&gt;Integrating sphere for spectral reflectance\/transm&lt;\/h5&gt;The IS-1000 is a 6-inch integrating sphere reflectance\/transmittance attachment for measuring diffuse spectral reflectance and transmittance of various materials over all or part of the entire wavelength range of 250 to 2500 nm. It is especially useful for measuring optical properties of leaves. The IS-1000 is used in combination with the OL Series 752-10 Plug-In Irradiance Standards and the OL Series 750 or Series 754 Spectroradiometers.\"\n\t\t\tclass=\"ngg-fancybox\" rel=\"f5cb86ff35ce972548f7f947525cdf93\">\n\n\t\t\t<img data-image-id='360'\n\t\t\t\ttitle=\"&lt;h5&gt;Integrating sphere for spectral reflectance\/transm&lt;\/h5&gt;The IS-1000 is a 6-inch integrating sphere reflectance\/transmittance attachment for measuring diffuse spectral reflectance and transmittance of various materials over all or part of the entire wavelength range of 250 to 2500 nm. It is especially useful for measuring optical properties of leaves. The IS-1000 is used in combination with the OL Series 752-10 Plug-In Irradiance Standards and the OL Series 750 or Series 754 Spectroradiometers.\"\n\t\t\t\talt=\"ol-is1000web\"\n\t\t\t\tsrc=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/ol-is1000web.jpg\"\n\t\t\t\tstyle=\"max-height: 480px;\"\/>\n\t\t<\/a>\n\n\t\t\n\t\t<a href=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/pluginweb.jpg\"\n\t\t\ttitle=\"&lt;h5&gt;Standard lamp attached to integrating sphere&lt;\/h5&gt;This photo illustrates how the spectral irradiance standrad lamp (or the wavelength and gain check module) are attached to the integrating spheres when performing system calibrations.\"\n\t\t\tdata-src=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/pluginweb.jpg\"\n\t\t\tdata-thumbnail=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/thumbs\/thumbs_pluginweb.jpg\"\n\t\t\tdata-image-id=\"361\"\n\t\t\tdata-title=\"pluginweb\"\n\t\t\tdata-description=\"&lt;h5&gt;Standard lamp attached to integrating sphere&lt;\/h5&gt;This photo illustrates how the spectral irradiance standrad lamp (or the wavelength and gain check module) are attached to the integrating spheres when performing system calibrations.\"\n\t\t\tclass=\"ngg-fancybox\" rel=\"f5cb86ff35ce972548f7f947525cdf93\">\n\n\t\t\t<img data-image-id='361'\n\t\t\t\ttitle=\"&lt;h5&gt;Standard lamp attached to integrating sphere&lt;\/h5&gt;This photo illustrates how the spectral irradiance standrad lamp (or the wavelength and gain check module) are attached to the integrating spheres when performing system calibrations.\"\n\t\t\t\talt=\"pluginweb\"\n\t\t\t\tsrc=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/pluginweb.jpg\"\n\t\t\t\tstyle=\"max-height: 480px;\"\/>\n\t\t<\/a>\n\n\t\t\n\t\t<a href=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/uwprobedeploymentweb.jpg\"\n\t\t\ttitle=\"&lt;h5&gt;Underwater deployment&lt;\/h5&gt;This photo illustrates a typical at-sea deployment of the OL 470WP. It is sitting on a counter-balanced platform (so that its entrance aperture remains perpendicular to the water surface).\"\n\t\t\tdata-src=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/uwprobedeploymentweb.jpg\"\n\t\t\tdata-thumbnail=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/thumbs\/thumbs_uwprobedeploymentweb.jpg\"\n\t\t\tdata-image-id=\"362\"\n\t\t\tdata-title=\"uwprobedeploymentweb\"\n\t\t\tdata-description=\"&lt;h5&gt;Underwater deployment&lt;\/h5&gt;This photo illustrates a typical at-sea deployment of the OL 470WP. It is sitting on a counter-balanced platform (so that its entrance aperture remains perpendicular to the water surface).\"\n\t\t\tclass=\"ngg-fancybox\" rel=\"f5cb86ff35ce972548f7f947525cdf93\">\n\n\t\t\t<img data-image-id='362'\n\t\t\t\ttitle=\"&lt;h5&gt;Underwater deployment&lt;\/h5&gt;This photo illustrates a typical at-sea deployment of the OL 470WP. It is sitting on a counter-balanced platform (so that its entrance aperture remains perpendicular to the water surface).\"\n\t\t\t\talt=\"uwprobedeploymentweb\"\n\t\t\t\tsrc=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/uwprobedeploymentweb.jpg\"\n\t\t\t\tstyle=\"max-height: 480px;\"\/>\n\t\t<\/a>\n\n\t\t\n\t\t<a href=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/uwprobeschematicweb.jpg\"\n\t\t\ttitle=\"&lt;h5&gt;Schematic of submersible integrating sphere&lt;\/h5&gt;This is a schematic diagram of the OL 470WP submersible integrating sphere. It can be used both in air and underwater -- an accurate immersion correction factor for this probe has been established empirically.\"\n\t\t\tdata-src=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/uwprobeschematicweb.jpg\"\n\t\t\tdata-thumbnail=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/thumbs\/thumbs_uwprobeschematicweb.jpg\"\n\t\t\tdata-image-id=\"363\"\n\t\t\tdata-title=\"uwprobeschematicweb\"\n\t\t\tdata-description=\"&lt;h5&gt;Schematic of submersible integrating sphere&lt;\/h5&gt;This is a schematic diagram of the OL 470WP submersible integrating sphere. It can be used both in air and underwater -- an accurate immersion correction factor for this probe has been established empirically.\"\n\t\t\tclass=\"ngg-fancybox\" rel=\"f5cb86ff35ce972548f7f947525cdf93\">\n\n\t\t\t<img data-image-id='363'\n\t\t\t\ttitle=\"&lt;h5&gt;Schematic of submersible integrating sphere&lt;\/h5&gt;This is a schematic diagram of the OL 470WP submersible integrating sphere. It can be used both in air and underwater -- an accurate immersion correction factor for this probe has been established empirically.\"\n\t\t\t\talt=\"uwprobeschematicweb\"\n\t\t\t\tsrc=\"https:\/\/fishlarvae.org\/wp-content\/gallery\/equip-measurement-of-light\/uwprobeschematicweb.jpg\"\n\t\t\t\tstyle=\"max-height: 480px;\"\/>\n\t\t<\/a>\n\n\t\t<\/div>\n\n\n[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/3&#8243;][vc_column_text]We use an International Light IL-1400A radiometer\/photometer(outfitted with a waterproof irradiance detector) to measure total visible (400-800 nm) irradiance and an Optronic Laboratories OL-754-PMT to measure spectral irradiance (280-800 nm) with high accuracy and sensitivity, in the air and underwater. We also have a Yankee Environmental Systems UVMFR-7 field instrument to monitor solar ultraviolet radiation.<\/p>\n<p>Please click on the images to obtain further details about this equipment.[\/vc_column_text][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column width=&#8221;2\/3&#8243;][\/vc_column][vc_column width=&#8221;1\/3&#8243;][vc_button title=&#8221;Back&#8221; color=&#8221;blue&#8221; align=&#8221;right&#8221; href=&#8221;\/facilities-equipment\/&#8221;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;2\/3&#8243;][vc_column_text][\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/3&#8243;][vc_column_text]We use an International Light IL-1400A radiometer\/photometer(outfitted with a waterproof irradiance detector) to measure total visible (400-800 nm) irradiance and an Optronic Laboratories OL-754-PMT to measure spectral irradiance (280-800 nm) with high accuracy and sensitivity, in the air and underwater. We also have a Yankee Environmental Systems UVMFR-7 field instrument to monitor &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-full-woo.php","meta":{"ngg_post_thumbnail":0,"footnotes":""},"_links":{"self":[{"href":"https:\/\/fishlarvae.org\/wp-json\/wp\/v2\/pages\/1355"}],"collection":[{"href":"https:\/\/fishlarvae.org\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/fishlarvae.org\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/fishlarvae.org\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fishlarvae.org\/wp-json\/wp\/v2\/comments?post=1355"}],"version-history":[{"count":3,"href":"https:\/\/fishlarvae.org\/wp-json\/wp\/v2\/pages\/1355\/revisions"}],"predecessor-version":[{"id":2755,"href":"https:\/\/fishlarvae.org\/wp-json\/wp\/v2\/pages\/1355\/revisions\/2755"}],"wp:attachment":[{"href":"https:\/\/fishlarvae.org\/wp-json\/wp\/v2\/media?parent=1355"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}