Comments and questions about the
APOD on the main view screen.
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APOD Robot
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by APOD Robot » Mon Apr 25, 2022 4:08 am
The Great Nebula in Carina
Explanation: In one of the brightest parts of
Milky Way lies a nebula where some of the
oddest things occur. NGC 3372, known as the
Great Nebula in Carina, is home to massive stars and changing nebulas. The
Keyhole Nebula (NGC 3324), the bright structure just below
the image center, houses several of these massive stars. The entire
Carina Nebula,
captured here, spans over 300
light years and lies about 7,500 light-years away in the
constellation of Carina.
Eta Carinae, the
most energetic star in the nebula, was one of the brightest stars in the sky in the 1830s, but
then faded dramatically. While
Eta Carinae itself maybe on the verge of a supernova explosion,
X-ray images indicate that much of the
Great Nebula in Carina has been a veritable
supernova factory.
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Ann
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by Ann » Mon Apr 25, 2022 6:59 am
We may compare Ignacio Javier Diaz Bobillo's portrait of the great Carina Nebula with a portrait of more or less the same (but not so wide) region by Wolfgang Promper.
The Great Carina Nebula. Image: Wolfgang Promper.
The Carina Nebula is the true "Trifid Nebula" in the sky. M20, move over!
Ann
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AVAO
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by AVAO » Mon Apr 25, 2022 6:03 pm
Nice HST picture.
Credit:ESA/Hubble
...Unfortunately, the Keyhole Nebula has nothing to do with NGC 3324
https://www.eso.org/public/images/eso1207a/
"Located in the Southern Hemisphere, NGC 3324 is at the northwest corner of the Carina Nebula (NGC 3372), home of the Keyhole Nebula and the active, outbursting star Eta Carinae. The entire Carina Nebula complex is located at a distance of roughly 7,200 light-years, and lies in the constellation Carina."
https://hubblesite.org/contents/media/i ... Image.html
Unfortunately there are a lot of websites, that quote the wrong text of the NASA page...
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johnnydeep
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by johnnydeep » Mon Apr 25, 2022 8:31 pm
Another painful attempt to map text object to image objects on my part. I suspect I failed. And after AVAO's post, I have no idea where NGC 3324 is in this APOD. How wrong am I?
![eta carina and keyhole nebula.png (234.53 KiB) Viewed 3701 times Eta Carinae and Keyhole Nebula?](./download/file.php?id=44018&t=1&sid=a2cf962c1f7f4de8c3f58385ff2d5470)
- Eta Carinae and Keyhole Nebula?
PA - based on the link to NGC 3324 that AVAO posted, it sure looks a lot like the profile of that famous woman with a Spanish sounding name that I can't remember:
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"To B̬̻̋̚o̞̮̚̚l̘̲̀᷾d̫͓᷅ͩḷ̯᷁ͮȳ͙᷊͠ Go......Beyond The F͇̤i̙̖e̤̟l̡͓d͈̹s̙͚ We Know."{ʲₒʰₙNYᵈₑᵉₚ}
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Fred the Cat
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by Fred the Cat » Mon Apr 25, 2022 9:58 pm
johnnydeep wrote: ↑Mon Apr 25, 2022 8:31 pm
Another painful attempt to map text object to image objects on my part. I suspect I failed. And after AVAO's post, I have no idea where NGC 3324 is in this APOD. How wrong am I?
eta carina and keyhole nebula.png
PA - based on the link to NGC 3324 that AVAO posted, it sure looks a lot like the profile of that famous woman with a Spanish sounding name that I can't remember:
Gabriela Mistral?
Freddy's Felicity "Only ascertain as a cat box survivor"
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bystander
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by bystander » Mon Apr 25, 2022 11:19 pm
johnnydeep wrote: ↑Mon Apr 25, 2022 8:31 pm
Another painful attempt to map text object to image objects on my part. I suspect I failed. And after AVAO's post, I have no idea where NGC 3324 is in this APOD. How wrong am I?
eta carina and keyhole nebula.png
PA - based on the link to NGC 3324 that AVAO posted, it sure looks a lot like the profile of that famous woman with a Spanish sounding name that I can't remember:
https://cdn.eso.org/images/screen/eso1207a.jpg
Wikipedia wrote:
Keyhole Nebula
The Keyhole, or Keyhole Nebula, is a small dark cloud of cold molecules and dust within the Carina Nebula, containing bright filaments of hot, fluorescing gas, silhouetted against the much brighter background nebula. ...
... The Keyhole does not have its own NGC designation. It is sometimes
erroneously called
NGC 3324, but that catalogue designation refers to a reflection and emission nebula just northwest of the Carina Nebula (or to its embedded star cluster).
...
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk. — Garrison Keillor
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Ann
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by Ann » Tue Apr 26, 2022 2:48 am
johnnydeep wrote: ↑Mon Apr 25, 2022 8:31 pm
Another painful attempt to map text object to image objects on my part. I suspect I failed. And after AVAO's post, I have no idea where NGC 3324 is in this APOD. How wrong am I?
eta carina and keyhole nebula.png
PA - based on the link to NGC 3324 that AVAO posted, it sure looks a lot like the profile of that famous woman with a Spanish sounding name that I can't remember:
Here you are, Johnny. NGC 3324 is in the upper left corner of today's APOD. "She" is also known as the Gabriela Mistral Nebula.
Note that the profile of Gabriela Mistral is "looking to the right" in the image that you posted, but her nebular likeness is "looking up" in the APOD.
Ann
Color Commentator
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markb212
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by markb212 » Tue Apr 26, 2022 3:40 am
To me, the main part of the picture nebula looks like a person, a bit ghostly, with a round head and two dark eyes, head above a narrow torso, right arm outstretched, left arm tucked close in, possibly right leg bent up. And in the upper right corner I see the head of a bearded man in profile with prominent cheek bones a pug nose, and a massive head of red hair. He's looking down to the left, directly at the head of the other person (or ghost).
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johnnydeep
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by johnnydeep » Tue Apr 26, 2022 4:05 pm
Thanks guys. So I did manage to get my Eta Carinae and Keyhole Nebula labeled correctly, though I still do find it difficult to orient myself among all the various image resolutions, scales, wavelenght filters, orientations, and sometimes even right or left reflections!
![eta carinae and the keyhole nebula 2.JPG (91.4 KiB) Viewed 3570 times Eta Carinae and Keyhole Nebula](./download/file.php?id=44028&t=1&sid=a2cf962c1f7f4de8c3f58385ff2d5470)
- Eta Carinae and Keyhole Nebula
--
"To B̬̻̋̚o̞̮̚̚l̘̲̀᷾d̫͓᷅ͩḷ̯᷁ͮȳ͙᷊͠ Go......Beyond The F͇̤i̙̖e̤̟l̡͓d͈̹s̙͚ We Know."{ʲₒʰₙNYᵈₑᵉₚ}
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johnnydeep
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by johnnydeep » Tue Apr 26, 2022 4:07 pm
markb212 wrote: ↑Tue Apr 26, 2022 3:40 am
To me, the main part of the picture nebula looks like a person, a bit ghostly, with a round head and two dark eyes, head above a narrow torso, right arm outstretched, left arm tucked close in, possibly right leg bent up. And in the upper right corner I see the head of a bearded man in profile with prominent cheek bones a pug nose, and a massive head of red hair. He's looking down to the left, directly at the head of the other person (or ghost).
I'll give you the bearded man - pretty good likeness to Abraham Lincoln if you ask me!
![Abe Lincoln in Carinae.JPG (79.34 KiB) Viewed 3563 times Abe Lincoln in Carinae](./download/file.php?id=44029&t=1&sid=a2cf962c1f7f4de8c3f58385ff2d5470)
- Abe Lincoln in Carinae
...but your ghostly man is less convincing. Perhaps a "grayling" alien of some sort.
--
"To B̬̻̋̚o̞̮̚̚l̘̲̀᷾d̫͓᷅ͩḷ̯᷁ͮȳ͙᷊͠ Go......Beyond The F͇̤i̙̖e̤̟l̡͓d͈̹s̙͚ We Know."{ʲₒʰₙNYᵈₑᵉₚ}
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AVAO
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Post
by AVAO » Tue Apr 26, 2022 7:20 pm
Ann wrote: ↑Tue Apr 26, 2022 2:48 am
Here you are, Johnny. NGC 3324 is in the upper left corner of today's APOD.
Ann
Thank's Ann. Now it is clear to me how NGC 3324 is located spatially.
AVAO wrote: ↑Mon Apr 25, 2022 6:03 pm
"Located in the Southern Hemisphere, NGC 3324 is at the northwest corner of the Carina Nebula (NGC 3372), home of the Keyhole Nebula and the active, outbursting star Eta Carinae."
Unfortunately there are a lot of websites, that quote the wrong text of the NASA page...[/size]
In this case, the text on the NASA website is not wrong, but simply misleading. NGC 3372 is the home of the Keyhole Nebula and the active, outbursting star Eta Carinae, not NGC 3324. However, the text in the APOD should be adjusted in the future...