Unihedron Sky Quality Meter - Narrow Field of View / Ethernet Connection with Housing
Sku:
PAOA-UN-SQM-LE-H
Mfg #:
SQM-LE+H
Item Can Ship:
Worldwide
$333.00
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SKU:
PAOA-UN-SQM-LE-H
Mfg #:
SQM-LE+H
Item Can Ship:
Worldwide
Description
Description
Sky Quality Meter with Lens - Narrow Field of View / Ethernet Connection
An ethernet-enabled SQM model for night-time sky brightness monitoring! The "Sky Quality Meter" measures the brightness of the night sky in magnitudes per square arcsecond. Designed by Dr. Doug Welch and Anthony Tekatch, the Unihedron Sky Quality Meter offers unprecedented sensitivity in a handheld meter.
Uses:
- Find out how good the night or site REALLY is.
- Compare the sky brightness at different sites quantitatively.
- Document the evolution of light pollution in your area.
- Set planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.
- Monitor sky brightness through the night, night-to-night, and year-to-year.
- Determine which nights show the greatest promise for finding the 'faintest fuzzies'!
- Calibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.
- Investigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.
- Help provide local ground truth for future sky brightness prediction with the Clear Sky Clock.
- CCD users can make a correlation between the SQM reading and when the background reaches some ADC level.
Features:
- Sky brightness reported in visual magnitudes per square arcsecond.
- Infrared blocking filter restricts measurement to visual bandpass.
- Sensor temperature, model number, and serial number are provided.
- Precision readings at even the darkest sites.
- Field-upgradeable firmware.
- Open protocol document.
Specifications:
- Ethernet connectivity.
- Included applications for reading data in Java, C, Perl, Python.
- The Half Width Half Maximum (HWHM) of the angular sensitivity is ~10°. The Full Width Half Maximum (FWHM) is then ~20°. The sensitivity to a point source ~19° off-axis is a factor of 10 lower than on-axis. A point source ~20° and ~40° off-axis would register 3.0 and 5.0 magnitudes fainter, respectively.
- Operates from 5-6VDC adapter (included).
- Size 3.6 x 2.6 x 1.1 in.
- Maximum light sampling time: 80 seconds.
- Minimum light sampling time: 1 seconds.
- Specifications are subject to change without notice.
What You Get:
- SQM-LE unit
- International power adapter
- USB flash drive containing the users manual, operation software (UDM), and example software. This can also be found online here.
- 6ft Ethernet cable (straight through for connection to hub/router)
- Ethernet crossover cable (for connection directly to PC)
- Calibration sheet indicates unit MAC address and calibration values
- Weatherproof Housing
Weatherproof Housing for Sky Quality Meter
This housing design is made to protect the SQM-LE/LU from normal outdoor conditions including weather and insects.
Features:
- White surfaces reflect the hot summer sunshine.
- Opening on bottom to allow moisture to escape.
- Glass top to prevent scratching when removing ice.
- Raised glass surface to prevent dirt and leaves from collecting.
- Small glass opening to minimize internal heating due to the Sun.
- Cable opening at bottom sealed with open-cell (breathable) foam prevents insects from entering.
- Marine silicone seal rated for outdoor use.
- Silicone seal around glass extends beyond glass-plastic interface to prevent ice from building in crevices.
- Hose clamps for easy mounting to pole.
- Staples for easy mounting to wood surface.
Useful Resources
- User Manual: SQM-LE Instruction Sheet (PDF format)
- Frequently Asked Questions
- SQM Comparison Chart
Other Information
- Country of Manufacture: Canada
Sky Quality Meter with Lens - Narrow Field of View / Ethernet Connection
An ethernet-enabled SQM model for night-time sky brightness monitoring! The "Sky Quality Meter" measures the brightness of the night sky in magnitudes per square arcsecond. Designed by Dr. Doug Welch and Anthony Tekatch, the Unihedron Sky Quality Meter offers unprecedented sensitivity in a handheld meter.
Uses:
- Find out how good the night or site REALLY is.
- Compare the sky brightness at different sites quantitatively.
- Document the evolution of light pollution in your area.
- Set planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.
- Monitor sky brightness through the night, night-to-night, and year-to-year.
- Determine which nights show the greatest promise for finding the 'faintest fuzzies'!
- Calibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.
- Investigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.
- Help provide local ground truth for future sky brightness prediction with the Clear Sky Clock.
- CCD users can make a correlation between the SQM reading and when the background reaches some ADC level.
Features:
- Sky brightness reported in visual magnitudes per square arcsecond.
- Infrared blocking filter restricts measurement to visual bandpass.
- Sensor temperature, model number, and serial number are provided.
- Precision readings at even the darkest sites.
- Field-upgradeable firmware.
- Open protocol document.
Specifications:
- Ethernet connectivity.
- Included applications for reading data in Java, C, Perl, Python.
- The Half Width Half Maximum (HWHM) of the angular sensitivity is ~10°. The Full Width Half Maximum (FWHM) is then ~20°. The sensitivity to a point source ~19° off-axis is a factor of 10 lower than on-axis. A point source ~20° and ~40° off-axis would register 3.0 and 5.0 magnitudes fainter, respectively.
- Operates from 5-6VDC adapter (included).
- Size 3.6 x 2.6 x 1.1 in.
- Maximum light sampling time: 80 seconds.
- Minimum light sampling time: 1 seconds.
- Specifications are subject to change without notice.
What You Get:
- SQM-LE unit
- International power adapter
- USB flash drive containing the users manual, operation software (UDM), and example software. This can also be found online here.
- 6ft Ethernet cable (straight through for connection to hub/router)
- Ethernet crossover cable (for connection directly to PC)
- Calibration sheet indicates unit MAC address and calibration values
- Weatherproof Housing
Weatherproof Housing for Sky Quality Meter
This housing design is made to protect the SQM-LE/LU from normal outdoor conditions including weather and insects.
Features:
- White surfaces reflect the hot summer sunshine.
- Opening on bottom to allow moisture to escape.
- Glass top to prevent scratching when removing ice.
- Raised glass surface to prevent dirt and leaves from collecting.
- Small glass opening to minimize internal heating due to the Sun.
- Cable opening at bottom sealed with open-cell (breathable) foam prevents insects from entering.
- Marine silicone seal rated for outdoor use.
- Silicone seal around glass extends beyond glass-plastic interface to prevent ice from building in crevices.
- Hose clamps for easy mounting to pole.
- Staples for easy mounting to wood surface.
Read Full Description
Reviews / Q&A
Reviews / Q&A
Resources
Resources
Product Guides / Manuals
Description
Reviews / Q&A
Resources
Description
Sky Quality Meter with Lens - Narrow Field of View / Ethernet Connection
An ethernet-enabled SQM model for night-time sky brightness monitoring! The "Sky Quality Meter" measures the brightness of the night sky in magnitudes per square arcsecond. Designed by Dr. Doug Welch and Anthony Tekatch, the Unihedron Sky Quality Meter offers unprecedented sensitivity in a handheld meter.
Uses:
- Find out how good the night or site REALLY is.
- Compare the sky brightness at different sites quantitatively.
- Document the evolution of light pollution in your area.
- Set planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.
- Monitor sky brightness through the night, night-to-night, and year-to-year.
- Determine which nights show the greatest promise for finding the 'faintest fuzzies'!
- Calibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.
- Investigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.
- Help provide local ground truth for future sky brightness prediction with the Clear Sky Clock.
- CCD users can make a correlation between the SQM reading and when the background reaches some ADC level.
Features:
- Sky brightness reported in visual magnitudes per square arcsecond.
- Infrared blocking filter restricts measurement to visual bandpass.
- Sensor temperature, model number, and serial number are provided.
- Precision readings at even the darkest sites.
- Field-upgradeable firmware.
- Open protocol document.
Specifications:
- Ethernet connectivity.
- Included applications for reading data in Java, C, Perl, Python.
- The Half Width Half Maximum (HWHM) of the angular sensitivity is ~10°. The Full Width Half Maximum (FWHM) is then ~20°. The sensitivity to a point source ~19° off-axis is a factor of 10 lower than on-axis. A point source ~20° and ~40° off-axis would register 3.0 and 5.0 magnitudes fainter, respectively.
- Operates from 5-6VDC adapter (included).
- Size 3.6 x 2.6 x 1.1 in.
- Maximum light sampling time: 80 seconds.
- Minimum light sampling time: 1 seconds.
- Specifications are subject to change without notice.
What You Get:
- SQM-LE unit
- International power adapter
- USB flash drive containing the users manual, operation software (UDM), and example software. This can also be found online here.
- 6ft Ethernet cable (straight through for connection to hub/router)
- Ethernet crossover cable (for connection directly to PC)
- Calibration sheet indicates unit MAC address and calibration values
- Weatherproof Housing
Weatherproof Housing for Sky Quality Meter
This housing design is made to protect the SQM-LE/LU from normal outdoor conditions including weather and insects.
Features:
- White surfaces reflect the hot summer sunshine.
- Opening on bottom to allow moisture to escape.
- Glass top to prevent scratching when removing ice.
- Raised glass surface to prevent dirt and leaves from collecting.
- Small glass opening to minimize internal heating due to the Sun.
- Cable opening at bottom sealed with open-cell (breathable) foam prevents insects from entering.
- Marine silicone seal rated for outdoor use.
- Silicone seal around glass extends beyond glass-plastic interface to prevent ice from building in crevices.
- Hose clamps for easy mounting to pole.
- Staples for easy mounting to wood surface.
Useful Resources
- User Manual: SQM-LE Instruction Sheet (PDF format)
- Frequently Asked Questions
- SQM Comparison Chart
Other Information
- Country of Manufacture: Canada
Reviews / Q&A
Resources
Product Guides / Manuals
Unihedron Sky Quality Meter - Narrow Field of View / Ethernet Connection with Housing
$333.00