It’s not light, it’s not dark. It’s that special time called twilight, and HRPO wants to introduce you to it!
*Are all sections of the sky the same shade of blue?
*Which stars are seen first?
*Are Mercury☿ and Venus♀ or the Moon out?
*Is that moving object a plane, a satellite or space debris?
*How much actual darkness should I expect in a light-polluted city when twilight has passed?
We begin with the Sun☉ a mere seven degrees above the horizon and sinking. There is no other time like twilight. Bring it into your life!
IMPORTANT NOTE: Current Brightness of Betelgeuse
As the variable star Betelgeuse is currently experience an unprecendented dip in brightness, no one knows how bright it will be on this evening. Please assist us in staying alert for the first appearance of Betelguese, so we can estimate its magnitude!
The 17 April lecture “Wonders of the Spring Sky” is an excellent follow-up to this session.
This program pre-empts the Friday Night Lecture Series on…
*the last Friday in spring before Daylight Time begins
*the Friday during the week of Independence Day
*the first Friday in fall after Daylight Time ends
Updated by Frederick J. Barnett on Thursday, February 27, 2020, 06:08 PM.