{"product_id":"sky-quality-meter-sqm-l-with-lens","title":"Sky Quality Meter (SQM-L) with Lens","description":"\u003cp\u003eFinally, an affordable meter for measuring sky brightness for astronomers!  The \"Sky Quality Meter\" measures the brightness of the night sky in magnitudes per square arcsecond.  Unprecedented sensitivity in a handheld meter!  Designed by Dr. Doug Welch and Anthony Tekatch.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eUses:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e \u003cli\u003eFind out how good the night or site REALLY is.\u003c\/li\u003e \u003cli\u003eCompare the sky brightness at different sites quantitatively.\u003c\/li\u003e \u003cli\u003eDocument the evolution of light pollution in your area.\u003c\/li\u003e \u003cli\u003eSet planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.\u003c\/li\u003e \u003cli\u003eMonitor sky brightness through the night, night-to-night, and year-to-year.\u003c\/li\u003e \u003cli\u003eDetermine which nights show the greatest promise for finding the 'faintest fuzzies'!\u003c\/li\u003e \u003cli\u003eCalibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.\u003c\/li\u003e \u003cli\u003eInvestigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.\u003c\/li\u003e \u003cli\u003eHelp provide local ground truth for future sky brightness prediction with the Clear Sky Clock.\u003c\/li\u003e \u003cli\u003eCCD users can make a correlation between the SQM reading and when the background reaches some ADC level.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e \u003cli\u003eAudible signal while measurement is in progress.\u003c\/li\u003e \u003cli\u003eSky brightness displayed in visual magnitudes per square arcsecond.\u003c\/li\u003e \u003cli\u003eInfrared blocking filter restricts measurement to visual bandpass.\u003c\/li\u003e \u003cli\u003eTemperature in both Celsius and Fahrenheit as well as model number and serial number can be displayed with different button press sequence.\u003c\/li\u003e \u003cli\u003ePrecision readings at even the darkest sites.\u003c\/li\u003e \u003cli\u003ePower-saving features designed in for maximum battery life.\u003c\/li\u003e \u003cli\u003eReverse battery protection.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e \u003cli\u003eOperates from 9V battery (included).\u003c\/li\u003e \u003cli\u003eSize 3.8 x 2.4 x 1 in.\u003c\/li\u003e \u003cli\u003eMaximum light sampling time: 8 0 seconds.\u003c\/li\u003e \u003cli\u003eSpecifications are subject to change without notice.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Unihedron","offers":[{"title":"Default Title","offer_id":45644409208901,"sku":"ceg1787927903735","price":102.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/0777\/8885\/files\/sky-quality-meter-sqm-l-with-lens_1.jpg?v=1787927908","url":"https:\/\/www.fernwicka.com\/products\/sky-quality-meter-sqm-l-with-lens","provider":"My Store","version":"1.0","type":"link"}