Dark time zenith night sky brightness
{"Image DocumentName": "Dark time zenith night sky brightness", "Image ImageDescription": "measured at various observatories. Site. Year. S10.7cm. U. B. V. R. I. MJy. La Silla Kitt Peak CTIO Calar Alto La Palma Mauna Kea Paranal mag arcsec-2. Mattila et al. 1996; Pilachowski et al. 1989; Walker 1987, 1988; Leinert et al. 1998; Krisciunas 1997.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}