APOD: The Sky from Mauna Kea (2015 May 11)

Comments and questions about the APOD on the main view screen.
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APOD: The Sky from Mauna Kea (2015 May 11)

Post by APOD Robot » Mon May 11, 2015 4:11 am

Image The Sky from Mauna Kea

Explanation: What if you could stand at the top of a volcano and peer out across the universe? It the timing is right, you might see an amazing panorama like the one featured here. In this case, the volcano is the Hawaii's Mauna Kea, and the time was a clear night last summer In the foreground of this south-facing panorama lies a rugged landscape dotted with rocks and hardy plants. Slightly above and further out, a white blanket of clouds spreads horizontally to the horizon, seemingly dividing heaven and Earth. City lights illuminate the clouds and sky on the far left, while orange lava in the volcanic caldera of Kilauea lights up the clouds just left of center. The summit of an even more distant Hawaiian volcano, Mauna Loa, is visible in dark silhouette near the central horizon. Green airglow is visible above the clouds, caused by air molecules excited by the Sun during the day. The Moon is the bright orb on the right. A diffuse band of light-colored zodiacal light extends up from the far right. Most distant, the dramatic central band of our Milky Way Galaxy appears to rise vertically from Mauna Loa. The person who witnessed and captured this breathtaking panorama stands before you in the image center.

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DL MARTIN

Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by DL MARTIN » Mon May 11, 2015 8:19 am

IS THAT A GALAXY JUST TO THE LEFT AND SLIGHTLY DOWN FROM MARS?

MadMan

Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by MadMan » Mon May 11, 2015 12:10 pm

If you click on the image to download the hi-res image, you will see that is a meteor.

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by starsurfer » Mon May 11, 2015 12:28 pm

I think Hilo is full of astronomers!

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Jarod997 » Mon May 11, 2015 1:05 pm

You have got better at Photography! (249)

Very nice job incorporating many different light sources.

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Craine » Mon May 11, 2015 2:08 pm

MadMan wrote:If you click on the image to download the hi-res image, you will see that is a meteor.
There is another one in the middle of the Milky Way's dust lanes.

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by neufer » Mon May 11, 2015 2:28 pm

Richard Childers wrote:
Would you please quit covering up your perfectly nice astronomical images with those stupid cartoons explaining what we are seeing?

I'm ready to begin cursing at you.
Rather than cursing you might try moving your cursor off of the astronomical images.
http://en.wikipedia.org/wiki/Cursor_%28computing%29 wrote:
Cursor is Latin for 'runner.' A cursor is the name given to the transparent slide engraved with a hairline that is used for marking a point on a slide rule. The term was then transferred to computers through analogy.
Curse, v. t. [AS. cursian, corsian, perh. of Scand. origin; cf. Dan. korse to make the sign of the cross]
Last edited by geckzilla on Mon May 11, 2015 6:16 pm, edited 1 time in total.
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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Boomer12k » Mon May 11, 2015 3:27 pm

Looks like we are going to need to rename The Pipe Nebula region to..... The Battle Axe....

Really a great shot!!!! Top o the world, Ma....

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Joe Stieber » Mon May 11, 2015 3:50 pm

Based primarily on the position of the moon, this picture was taken on August 28, 2014. The moon was about 3.7 days old and 12% illuminated (i.e., a moderately thin crescent as shown in the mouseover inset).

Some of the labeled astronomical features are...

Humu = Altair
Nai'a = Delphinus
Ka Maka = Shaula & Lesath, the stinger of Scorpius
Lehuakona = Antares
Hikianalia = Spica
Hokule'a = Arcturus

Ceres could also have been added, about 4.5 degrees below-right of Vesta (for comparison, Mars and Saturn are about 4 degrees apart).

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Ron-Astro Pharmacist » Mon May 11, 2015 3:57 pm

Some of the Hawaiian names for the celestial objects also made me curious the find their origins.

http://pvs.kcc.hawaii.edu/ike/hookele/h ... lines.html

I like the annotations and "The Sky from Mauna Kea!" Nani Wakea :D
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Doink

Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Doink » Mon May 11, 2015 4:03 pm

Richard Childers wrote:Would you please quit covering up your perfectly nice astronomical images with those stupid cartoons explaining what we are seeing?
Some of us completely unprofessional beginners need help with what we're looking at. The mouse-overs are quite helpful. Please continue to add them where feasible. Thanks, APOD kicks a**es in the butt.

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by neufer » Mon May 11, 2015 4:19 pm

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Boomer12k » Mon May 11, 2015 7:27 pm

Actually, I LIKE the annotations....makes it easier to know the other things you are looking at...

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by neufer » Mon May 11, 2015 8:57 pm

Click to play embedded YouTube video.
Boomer12k wrote:
Actually, I LIKE the annotations....makes it easier to know the other things you are looking at... :---[===] *
You can know the name of a bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird... So let's look at the bird and see what it's doing -- that's what counts. I learned very early the difference between knowing the name of something and knowing something.

―Richard Feynman
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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Chris Peterson » Mon May 11, 2015 10:15 pm

neufer wrote:
Click to play embedded YouTube video.
Boomer12k wrote:
Actually, I LIKE the annotations....makes it easier to know the other things you are looking at... :---[===] *
You can know the name of a bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird... So let's look at the bird and see what it's doing -- that's what counts. I learned very early the difference between knowing the name of something and knowing something.

―Richard Feynman
Of course, if you don't also know the name of the bird, your ability to communicate your knowledge of what it's doing is very limited.
Chris

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by neufer » Mon May 11, 2015 11:05 pm

Chris Peterson wrote:
Of course, if you don't also know the name of the bird,
your ability to communicate your knowledge of what it's doing is very limited.
My ability to communicate my knowledge of Hawaiian named stars with no information on even how to pronounce them (much less what interesting mythological stories might be involved) is also limited.
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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by geckzilla » Mon May 11, 2015 11:14 pm

I can't help with pronunciation but information regarding Polynesian sky culture can be found here. This web page was used to help annotate the image along with Stellarium, which has the ability to display numerous sky cultures built in. http://pvs.kcc.hawaii.edu/ike/hookele/h ... lines.html
Just call me "geck" because "zilla" is like a last name.

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Chris Peterson » Mon May 11, 2015 11:23 pm

neufer wrote:
Chris Peterson wrote:Of course, if you don't also know the name of the bird,
your ability to communicate your knowledge of what it's doing is very limited.
My ability to communicate my knowledge of Hawaiian named stars with no information on even how to pronounce them (much less what interesting mythological stories might be involved) is also limited.
Perhaps, but it need not be. If you chose to study any of the objects identified in today's image, you would only be limited in your ability to communicate that knowledge to people embedded in Polynesian culture if you could not connect your knowledge with the correct cultural labels.
Chris

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Trelfani

Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Trelfani » Fri May 15, 2015 9:00 pm

This is a montage photo. Kilauea is on the other side of Mauna Loa, which is in between Mauna Kea and Kilauea. Hilo is South of Mauna Kea, not north. You cannot see the south end of Mauna Loa from Mauna Kea, because the Northwest Rift Zone of Mauna Loa is in the way. Mauna Loa is only about 30 feet lower than Mauna Kea.

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Chris Peterson » Fri May 15, 2015 9:32 pm

Trelfani wrote:This is a montage photo. Kilauea is on the other side of Mauna Loa, which is in between Mauna Kea and Kilauea. Hilo is South of Mauna Kea, not north. You cannot see the south end of Mauna Loa from Mauna Kea, because the Northwest Rift Zone of Mauna Loa is in the way. Mauna Loa is only about 30 feet lower than Mauna Kea.
The image is not a "montage" (whatever that means). It is a single image made on a full-frame sensor with a 24 mm lens. Whether or not Kilauea is blocked by the lower eastern slope of Mauna Loa isn't really at issue, since we're seeing the glow of Kilauea on the clouds over it, not the volcano itself (although it's close... we're looking towards a 3,500 foot caldera from a 13,500 foot peak with an intervening 6,000 foot ridge approximately midway). Hilo is mainly east of Mauna Kea, which is why we see its light on the left (east) side of this image.
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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by geckzilla » Fri May 15, 2015 10:07 pm

It is disorientingly wide. It's almost a full 180° across so straight in the middle is approximately south and at the left and right edges are east and west, respectively. Per the photographer, the image is a 20 shot panorama and not a single image. (This info came from an email exchange that was made available to me to make it easier to annotate.)
Just call me "geck" because "zilla" is like a last name.

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by Chris Peterson » Fri May 15, 2015 10:40 pm

geckzilla wrote:It is disorientingly wide. It's almost a full 180° across so straight in the middle is approximately south and at the left and right edges are east and west, respectively. Per the photographer, the image is a 20 shot panorama and not a single image. (This info came from an email exchange that was made available to me to make it easier to annotate.)
Interesting. It looked too wide for a 24mm lens, but with composited images the processing software usually removes the focal length and exposure time from the EXIF header.

I should point out (not to you) that the correct term for this type of image is "mosaic", not "montage". It is certainly a panorama, but a panorama need not be a mosaic, of course.
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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by geckzilla » Fri May 15, 2015 10:59 pm

I usually let people get away with saying montage if they aren't imagers. I'd chide a fellow artist. ;)
Just call me "geck" because "zilla" is like a last name.

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by 2stepbay » Sun Jun 21, 2015 5:44 am

Lovely pano image. At first I had difficulty understanding exactly which scene I was viewing vis-a-vis the visual I'm accustomed to seeing from this location. The extra wide angle perspective makes Mauna Loa seem far in the distance to the right of Kilauea. Actually, Mauna Loa looms quite large across the saddle area of Big Island, an area which bisects Mauna Loa and Mauna Kea, with Kilauea more in the distance. Also, the glow from Kilauea is coming from a lava lake within Halema'uma'u Crater. That crater is within Kilauea Crater at the summit of Mauna Kilauea, approx 4,000 ft elevation.

The bright surface glows from Hilo and the area directly in front of the observer are exaggerated by the long exposure. I'd imagine the glow in front of the observer comes from the Visitor Centre area at the 9,000 ft elevation. It's here workers manning the telescopes at the summit find lodging, food etc. Of course, the light there is fully shielded.

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Re: APOD: The Sky from Mauna Kea (2015 May 11)

Post by neufer » Fri Sep 23, 2016 12:20 pm

Chris Peterson wrote:
neufer wrote:
Boomer12k wrote:
Actually, I LIKE the annotations....makes it easier to know the other things you are looking at... :---[===] *
You can know the name of a bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird... So let's look at the bird and see what it's doing -- that's what counts. I learned very early the difference between knowing the name of something and knowing something.

―Richard Feynman
Of course, if you don't also know the name of the bird, your ability to communicate your knowledge of what it's doing is very limited.
Click to play embedded YouTube video.
Click to play embedded YouTube video.
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