![]() Your nice ground-based data refutes that. Richard- Thank you! Nice work! I’m looking at suppression of melatonin by light and have been told by 1 researcher that we don’t need to worry about moonlight because it contains little to no radiation in the 460nm-480nm range. Richard, it seems to me the absorption effect of O2, see also this image from Wiki. It’s very much appreciated.ĭo you have any ideas about what might be causing the notch in the lunar light spectrum at about 760 nm? That is an interesting spot on the wavelength line because many IR filters have that as a pass band. This is very well done, original observation. You can use the data, my info is found here: #DARK MOONLIGHT MIDIR FULL#It was already hard enough to get a nice measurement with the full moon (I had to point it very precisely as the spectrometer had to be in radiance mode and has then only an acceptance window of 1.8 degrees). I did not redo the measurement at other moon cycles. In the measurement file you can find the time and date. Have you run the experiment on a new moon (Black No Moon) in order to compare the results between the two?Ĭan I use your information in my dissertation and if so, please send me your titles.ĭear George. If I understand correctly, the experiment was done on a full moon. ![]() Great work, I’m thinking of doing my PhD on the cooling effects of the moonlight.ĭo you have the Latitude and Longitude of the experiment location? An illuminance value of 0.14 lux is what would be expected. ![]() Lastly an csv-file with the measurement data, which is an average of 24 measurements.Īnd here the file extended with a column for Ee (in W/m^2/nm) and the approximated illuminance value (in lux). Here the spectrum and derived parameters. I mounted the spectrometer on a tripod and kept on aligning and measuring until I had an output with a high signal. However the expected illuminance is only 1 lux and that results in a very faint spectrum with signals for each wavelength too close to the noise limit to have a nice signal.Ģ) measurement of luminance (in Cd/mˆ2), and that requires a very well alignment of the measurement device in the direction of the moon, as the sensitivity area of the device in this mode is only two degrees wide. Taking measurements with the spectrometer SpecBos 1211 can then be done in two ways.ġ) measurement of the illuminance (in lux). It was an evening with few clouds and we had a full moon, well visible. ![]() The measurement has been done on 14th of April 2014. As I do a lot of lamp measurements myself (see the category lamp measurements), I decided to measure the moon spectrum myself and put that info available on the internet.
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