Supermoon!

Our closest neighbor.
Christopher K.
Posts: 5766
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

2020 Supermoon

Post by Christopher K. »

Full Moon is at 9:35pm on Tuesday 7 April; at this time it will be rising in the east, in the constellation Virgo (beautiful B-class Spica will be to its lower right). Perigee will have taken place about nine hours earlier and so this is a fantastic Supermoon on its way--the biggest and brightest of 2020!
Christopher K.
Posts: 5766
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Supermoon!

Post by Christopher K. »

Here is NOAA's forecast for 9:30pm CDT tomorrow...
precipitation potential, 2%
sky cover, 46%
relative humidity, 75%
temperature, 23˚C
surface wind, S 9 km/h

Danko's Clear Dark Sky states that during HRPO's viewing time the transparency rating will be "poor" (1 out of 5) and the seeing rating will be "poor" (2 out of 5). This is a good forecast, the poor ratings from Danko notwithstanding.

The best time to view the Supermoon will be ~8:30pm to 10:30pm. You will notice the two-tone quality of the moon—the white-grey cratered areas full of dust, and the relatively smooth blue-purple expanses (which are actually solidified lava basins).

Here is a map labelling those major old lava seas...
https://skyandtelescope.org/wp-content/ ... px_lbl.jpg

Atilla Danko's Clear Dark Sky forecast for HRPO:
https://www.cleardarksky.com/c/HghLndRdObLAkey.html

Don't forget your sketching form...
http://hrpo.lsu.edu/
Christopher K.
Posts: 5766
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Supermoon!

Post by Christopher K. »

Here we go! There's elevated humidity is NOAA's 9:30pm CDT forecast but the forecast is still good...
precipitation potential, 1%
sky cover, 39%
relative humidity, 86%
temperature, 24˚C
surface wind, SW 10 km/h

Danko's Clear Dark Sky states that during HRPO's viewing time the transparency rating will be "below average" (2 out of 5) and the seeing rating will be "poor" (2 out of 5). The humidity will, however, hit an all-surfaces-covered-in-moisture level at around 10:15pm.

More information:
https://solarsystem.nasa.gov/news/922/w ... supermoon/
Christopher K.
Posts: 5766
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Supermoon!

Post by Christopher K. »

This Supermoon was the first Full Moon of Spring, and it was amazing! I spied all unaided-eye maria except for the Sea of Cold (always difficult for me) then used my Orion 10x50 Explorer WA binocular to view some lunar rays. Meanwhile, Jeff Dai got this beautiful shot...
https://apod.nasa.gov/apod/ap200410.html
Christopher K.
Posts: 5766
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Supermoon!

Post by Christopher K. »

For the first time, HRPO will be open for patrons to view a Supermoon rising above the eastern horizon!

The following restrictions apply to HRPO patrons at this time...
*Only thirty-six (36) patrons are allowed inside the main floor at any one time.
*Only three (3) patrons will be allowed upstairs in the main dome at any one time.

Sunset is at 7:57pm CDT. The front gate will open at 8pm and the main building will open at 8:15pm. Below is the NOAA forecast for HRPO's planned viewing time of 8:45pm to 10:15pm...
precipitation potential, 21%
sky cover, 22%
relative humidity, 84%
temperature, 24˚C
surface wind, S 5 km/h

Danko's Clear Dark Sky states that during HRPO's viewing time the transparency rating will be "below average" (2 out of 5) and the seeing rating will be "good" (4 out of 5).

Twilight ends at 9:32pm CDT. There is one predicted visible pass of a Chang Zheng 2C rocket body beginning at 10:02pm (magnitude 1.5). HRPO will close at 10:15pm CDT.

The 25 May 2021 rating is...
EXCELLENT
VERY GOOD
GOOD
FAIR
POOR
BAD
Post Reply