A web search on +lux +magnitude at www.evreka.com gave this: En comparant les éclats du soleil et d'un étalon de laboratoire, puis ceux du soleil et d'une étoile, on peut ramener toute magnitude visuelle à un éclairement E exprimé en lux au moyen de la relation suivante: log E(lux) = -0,4×(m + 14,2). I believe the Sun is -26.7; this gives exactly 100000 lux. ----- Original Message ----- From: "Tom Wagner" <sciteach1950@home.com> To: "Astronomy-eGroup" <astronomer@yahoogroups.com> Cc: <Shoot-for-the-Stars@yahoogroups.com>; "SeeSat" <SeeSat-L@blackadder.lmsal.com> Sent: Monday, January 28, 2002 1:53 AM Subject: Lux > Anybody know of a way of mathematically comparing visible magnitude with the > lux, a unit that is used to describe the minimum amount light that video > cameras are sensitive to? > > Always looking up, > > Iowa Tom > USA > > ----------------------------------------------------------------- > Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' > in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org > http://www.satellite.eu.org/seesat/seesatindex.html > >
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