2020 "What's Up" Videos

About the B.R.A.S. itself, or any topics that don't fit in the other forums.
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Christopher K.
Posts: 5480
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

2020 "What's Up" Videos

Post by Christopher K. »

What's Up for April 2020
Preston Dyches narrates the first "What's Up" video mentioned on the Forum in a while. The videos used to be part of the regular NASA Videos lineup but aren't any more, which means if one doesn't go straight to the JPL video listing...well, out of sight out of mind.

This video clocks in at 3:18. Highlights include the Venus-Pleaides conjuction; and the interplay of the Moon, Mars, Jupiter and Saturn during the early morning hours this month. However, a majority of the video concerns the so-called Moon Illusion. This is a well-known effect; the Moon seems huge when viewed near the horizon, and much smaller when high up in the sky. The Moon indeed does gets smaller and larger in the sky over a single cycle (apogee and perigee), but not during a single night--that would be the Moon Illusion!

The video closes with the April dates of the major lunar phases. Bill Dunford, Rod Garan, Bill Ingalls, Sylvia Müller, Anita Ritenour, Stephan Rahn and Kim Shiflett contributed the images for this month's video...
https://www.jpl.nasa.gov/video/details.php?id=1612

More information:
https://skyandtelescope.org/observing/m ... n11252015/

Christopher K.
Posts: 5480
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: 2020 "What's Up" Videos

Post by Christopher K. »

What's Up for May 2020
Preston Dyches narrates the this 3:20 video for May. He reminds us mandatory homebodies that there's still good stuff to see--like Venus, Sirius and Betegeuse in the hour or so after sunset. There's also, right before sunrise, the planets Mars and Jupiter and Saturn, and the stars Antares, Altair and Fomalhaut (though that last might be difficult in the twilight).

A quote: "Now, we often tend to look at the sky as a curved dome above our heads - a sort of real-life version of a planetarium dome, covered in a carpet of stars. But remember, in reality, it's anything but flat. The night sky is the deepest, most open expanse of space you could possibly look into."

The video closes with the May dates of the major lunar phases...
7 May = Full Moon
14 May = Last Quarter Moon
22 May = New Moon
29 May = First Quarter Moon

Images were contributed by Sebastien Beaucourt, Domenico DiCola, Bull Dunford, Preston Dyches, Akira Fujii, Dylan O'Donnell, Stephen Rahn, Matt Scobel and Kelly Sikkema.

"What's Up for May 2020":
https://www.jpl.nasa.gov/video/details.php?id=1612

The Concept of the Celestial Sphere:
http://astro.wsu.edu/worthey/astro/html ... l-sph.html
http://abyss.uoregon.edu/~js/ast122/lectures/lec02.html
https://users.astro.ufl.edu/~freyes/cla ... R_CH_2.pdf

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