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Author Bará, S.; Espey, B.; Falchi, F.; Kyba, C.C.M.; Nievas, M., Pescatori, P., Ribas, S.J., Sánchez de Miguel, A.; Staubmann, P., Tapia Ayuga, C.; Wuchterl, G., Zamorano, J. url  openurl
  Title Report of the 2014 LoNNe Intercomparison Campaign Type Report
  Year 2015 Publication Abbreviated Journal  
  Volume Issue 32989 Pages  
  Keywords skyglow  
  Abstract The 2014 LoNNe (Loss of the Night Network) intercomparison campaign is the second of four campaigns planned during EU COST Action ES1204. The goal of these campaigns is to understand systematic uncertainty inherent in observations of skyglow (light pollution). An innovation of this year’s campaign was to take measurements with many of the nstruments at two sites: an urban location and a location far from artificial lights. This report summarizes the meeting, and also provides three recommendations for obtaining and analyzing handheld SQM observations.  
  Address  
  Corporate Author Thesis  
  Publisher Universidad Complutense Place of Publication Madrid Editor  
  Language English Summary Language (down) English Original Title  
  Series Editor Series Title e-prints Complutense Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1254  
Permanent link to this record
 

 
Author Rea, M.S.; Bullough, J.D.; Brons, M.S., J.A. url  doi
openurl 
  Title Parking lot lighting based upon predictions of scene brightness and personal safety Type Journal Article
  Year 2015 Publication Lighting Research and Technology Abbreviated Journal Lighting Res. & Tech.  
  Volume 49 Issue 3 Pages 293-304  
  Keywords Lightingl Security; parking lots; public perceptions; lighting levels  
  Abstract Providing subjective impressions of security is central to outdoor lighting design. Current parking lot lighting recommendations are based upon photopic illuminances, regardless of spectrum. Scene brightness perception is directly related to impressions of security, and depends upon both light level and spectrum. A provisional model was used to predict scene brightness for three parking lots, each illuminated to different levels by different light sources. Observers judged scene brightness, security and other factors for each lot. The provisional model accurately predicted both scene brightness and security judgements. The lighting associated with the best subjective ratings also had the lowest power density. A design method using ‘brightness illuminance’ is presented, which can lower system costs while maintaining a sense of security by users.  
  Address Lighting Research Center, Rensselaer Polytechnic Institute, 21 Union Street, Troy, NY 12180, USA. Email: ream(at)rpi.edu  
  Corporate Author Thesis  
  Publisher SAGE Place of Publication Editor  
  Language English Summary Language (down) English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1477-0938 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 1256  
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Author Bazell, R.J. url  openurl
  Title Star Bright, Street Light, Which Will They See Tonight? Type Magazine Article
  Year 1971 Publication Science Abbreviated Journal Science  
  Volume 171 Issue Pages 461  
  Keywords Society; light pollution; history; historical  
  Abstract Astronomers are asking that Tucson modify its outdoor lighting so that their view of the heavens will not be obstructed by the city's nighttime glare. Workers at the five observatories: in the mountains surrounding this rapidly growing city of 300,000 fear that in the future they will be unable to observe certain astronomical phenomena, if the amount of light coming from the city continues to increase.  
  Address  
  Corporate Author Thesis  
  Publisher AAAS Place of Publication Editor  
  Language English Summary Language (down) English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 1257  
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Author Ban, Y.; Cao, C.; Shao, X. url  doi
openurl 
  Title Assessment of scan-angle dependent radiometric bias of Suomi-NPP VIIRS day/night band from night light point source observations Type Journal Article
  Year 2015 Publication Proc. SPIE 9607, Earth Observing Systems XX, 2015 Abbreviated Journal  
  Volume Issue Pages 960727  
  Keywords Remote sensing; Suomi NPP; VIIRS DNB; calibration  
  Abstract The low gain stage of VIIRS Day/Night Band (DNB) on Suomi-NPP is calibrated using onboard solar diffuser. The calibration is then transferred to the high gain stage of DNB based on the gain ratio determined from data collected along solar terminator region. The calibration transfer causes increase of uncertainties and affects the accuracy of the low light radiances observed by DNB at night. Since there are 32 aggregation zones from nadir to the edge of the scan and each zone has its own calibration, the calibration versus scan angle of DNB needs to be independently assessed. This study presents preliminary analysis of the scan-angle dependence of the light intensity from bridge lights, oil platforms, power plants, and flares observed by VIIRS DNB since 2014. Effects of atmospheric path length associated with scan angle are analyzed. In addition, other effects such as light changes at the time of observation are also discussed. The methodology developed will be especially useful for JPSS J1 VIIRS due to the nonlinearity effects at high scan angles, and the modification of geolocation software code for different aggregation modes. It is known that J1 VIIRS DNB has large nonlinearity across aggregation zones, and requires new aggregation modes, as well as more comprehensive validation.  
  Address Univ. of Maryland, College Park, USA  
  Corporate Author Thesis  
  Publisher SPIE Place of Publication Editor  
  Language English Summary Language (down) English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 1259  
Permanent link to this record
 

 
Author Fulbright, J.P.; Xiong, X. url  doi
openurl 
  Title Suomi-NPP VIIRS day/night band calibration with stars Type Journal Article
  Year 2015 Publication Proc. SPIE 9607, Earth Observing Systems XX, 2015 Abbreviated Journal  
  Volume Issue Pages 96071S  
  Keywords Remote Sensing; Suomi NPP; VIIRS DNB; calibration  
  Abstract Observations of stars can be used to calibrate the radiometric performance of the Day/Night Band (DNB) of the Suomi-NPP instrument VIIRS. Bright stars are normally visible in the Space View window. In this paper, we describe several potential applications of stellar observations with preliminary results for several. These applications include routine trending of the gain of the highand mid-gain stages of the DNB and trending the gain ratio between those stages. Many of the stars observed by the VIIRS DNB have absolute flux curves available, allowing for an absolute calibration. Additionally, stars are visible during scheduled lunar roll observations. The electronic sector rotations applied during the scheduled lunar observations greatly increases the sky area recorded for a brief period, increasing the observing opportunities. Additionally, the DNB recorded data during the spacecraft pitch maneuver. This means the deep sky was viewed through the full Earth View. In this situation, thousands of stars (and the planet Mars) are recorded over a very short time period and over all aggregation zones. A possible application would be to create a gain curve by comparing the instrument response to the known apparent stellar brightness for a large number of stars of similar spectral shape. Finally, the DNB is especially affected the mirror degradation afflicting VIIRS. The degradation has shifted peak of the relative spectral response (RSR) of the DNB the blue and the effective band pass has been slightly reduced. The change in response for hot stars (effective temperatures of over 30,000 K) due to this degradation will differ by about 10 percent from the response change of cool stars (below 3500 K).  
  Address Science Systems and Applications, Inc., USA  
  Corporate Author Thesis  
  Publisher SPIE Place of Publication Editor  
  Language English Summary Language (down) English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 1260  
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