using the philip's and firefly planisphere Published 12 years ago • 94K plays • Length 23:16 Download video MP4 Download video MP3 Similar videos 10:06 astronomy classes: using your planisphere 17:48 why did the colour of hot objects puzzle the greatest minds? 9:10 how to use a planisphere 5:03 using a planisphere for night sky exploration 10:52 learning the stars & constellations with a planisphere 5:08 planisphere demonstration