Sky Radiance Spectrometer – METAS, Bern, Switzerland ● live

Time L_ph L_sc L_mel Az° El° t_m t_i SZA N

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Basler HDR JPEGs live under …/captures/<YYYY-MM-DD>/hammer/ or …/frame/ (same tree as hdr_capture_basler.py). Legacy captures/timelapse/ is still used if present.

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Trend – photopic luminance per PTU position

One line per PTU pointing; dashed lines are the SQM sky-brightness luminance. Scotopic and melanopic values are in the tooltip and the table. Drag or pinch to zoom; double-click or double-tap to reset; tap a point to add its spectrum.

Spectrum – spectral radiance vs wavelength