Ouch. That GIF moves way too fast, at least on my browser, and makes me
dizzy. I prefer the one in Wikipedia at Libration.
https://en.wikipedia.org/wiki/Libration
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx <az-observing-bounce@xxxxxxxxxxxxx>
On Behalf Of Ketelsen, Dean A - (ketelsen)
Sent: Saturday, March 10, 2018 6:33 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: Today's APOD
All-
Much as I like the recent effort, it is still tough to spot effects of
libration and moon's orbit eccentricity. For that, I much prefer the much
older gif that was made:
https://apod.nasa.gov/apod/ap051113.html
W/the much better recent data, could a similar gif or repeating clip be
made? Congrats again on the APOD!
-Dean
________________________________________
From: az-observing-bounce@xxxxxxxxxxxxx <az-observing-bounce@xxxxxxxxxxxxx>
on behalf of Tom Polakis <tpolakis@xxxxxxx>
Sent: Saturday, March 10, 2018 6:38:51 AM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Today's APOD
Congratulations to Jean-François Gout, who has the Astronomy Picture of the
Day for March 10.
https://apod.nasa.gov/apod/ap180310.html
It was clear enough in Arizona to take images of the moon on 25 consecutive
nights. My entire contribution was the second to last image of the waning
crescent, and JF was gracious enough to include me as a co-author.
His GIF that nicely shows the change in angular size and libration is worth
a look as well.
https://photos.smugmug.com/Astronomy-Misc/i-fzq8bW2/0/5086ccc2/XL/lunation-v
3-XL.gif
Tom
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