ECLIPSING DOUBLE STAR

Orbiting white main sequence star is eclipsed by a red giant. Noticeable fall-off of light when the white star is eclipsed, demonstrating the variability of an eclipsing pair. Approximately 2 cycles per minute.`

2 projectors, 600 watt total; 110V/60Hz or 220V/50Hz

SS 222
SS 222 E - int'l. version