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APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 4:05 am
by APOD Robot
Observatory Aligned with Moon Occulting Jupiter
Explanation: Sometimes we witness the
Moon moving directly in front of -- called occulting -- one of the planets in our
Solar System.
Earlier this month that planet was Jupiter.
Captured here was the moment when
Jupiter re-appeared from
behind the surface of our Moon. The Moon was in its
third quarter, two days before the dark
New Moon. Now, our
Moon is continuously half lit by the Sun, but when in its third quarter, relatively little of that half can be seen from the
Earth. Pictured, the Moon itself was aligned behind the famous
Lick Observatory in
California,
USA, on the summit of
Mount Hamilton.
Coincidentally, Lick enabled the discovery of a moon of Jupiter:
Amalthea, the last visually detected moon of Jupiter after
Galileo's
observations.
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 7:39 am
by Rauf
If my eyes aren't deceiving me, there's a faint dot on the top right of Jupiter, my guess is it's Ganymede.. There's another even fainter dot on top right of the first dot, and I think it must be Callisto.
Or is it just my eyes tricking me???
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 10:17 am
by rickwhitacre
You are correct! Both Ganymede and Callisto are visible in the image
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 1:01 pm
by Rauf
rickwhitacre wrote: ↑Wed May 24, 2023 10:17 am
You are correct! Both Ganymede and Callisto are visible in the image
You must be the photographer! Thanks for this beautiful picture, and for the answer
![:) :ssmile:](./images/smilies/smile.gif)
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 1:31 pm
by orin stepanek
What a lovely blue hour shot this is!
![Cool 8-)](./images/smilies/icon_cool.gif)
Kudos Rick Whitacre!
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 3:13 pm
by rickwhitacre
Rauf wrote: ↑Wed May 24, 2023 1:01 pm
rickwhitacre wrote: ↑Wed May 24, 2023 10:17 am
You are correct! Both Ganymede and Callisto are visible in the image
You must be the photographer! Thanks for this beautiful picture, and for the answer
I am! Thanks for the nice comment!
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 3:14 pm
by rickwhitacre
orin stepanek wrote: ↑Wed May 24, 2023 1:31 pm
MoonJupiter_Whitacre_960.jpg
What a lovely blue hour shot this is!
![Cool 8-)](./images/smilies/icon_cool.gif)
Kudos Rick Whitacre!
Thanks, Orin!
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 4:59 pm
by Ann
Rauf wrote: ↑Wed May 24, 2023 7:39 am
If my eyes aren't deceiving me, there's a faint dot on the top right of Jupiter, my guess is it's Ganymede.. There's another even fainter dot on top right of the first dot, and I think it must be Callisto.
Or is it just my eyes tricking me???
Well spotted, Rauf!
And beautiful image, rickwhitacre!
Ann
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 8:21 pm
by rickwhitacre
Thanks, Ann!
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 8:54 pm
by johnnydeep
From the description: "Now, our Moon is continuously half lit by the Sun"
Is that accurate? Doesn't the Earth block some Sunlight from hitting the moon during a lunar eclipse? Or is my 3D sense kaput once again?
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Wed May 24, 2023 10:52 pm
by j_isles
Small correction. The Moon is well past Third Quarter in the photo. The Third Quarter is when the visible hemisphere of the waning Moon is half illuminated.
Re: APOD: Observatory Aligned with Moon... (2023 May 24)
Posted: Thu May 25, 2023 6:35 am
by Rauf
johnnydeep wrote: ↑Wed May 24, 2023 8:54 pm
From the description: "Now, our Moon is continuously half lit by the Sun"
Is that accurate? Doesn't the Earth block some Sunlight from hitting the moon during a lunar eclipse? Or is my 3D sense kaput once again?
I guess no one wanted to take lunar eclipses into account
![Confused :?](./images/smilies/icon_confused.gif)