Explanation: These three bright nebulae are often featured on telescopic tours of the constellation Sagittarius and the crowded starfields of the central Milky Way. In fact, 18th century cosmic tourist Charles Messier cataloged two of them; M8, the large nebula just left of center, and colorful M20 on the top left. The third emission region includes NGC 6559 and can be found to the right of M8. All three are stellar nurseries about five thousand light-years or so distant. Over a hundred light-years across, the expansive M8 is also known as the Lagoon Nebula. M20's popular moniker is the Trifid. Glowing hydrogen gas creates the dominant red color of the emission nebulae. In striking contrast, blue hues in the Trifid are due to dust reflected starlight. Recently formed bright blue stars are visible nearby. The colorful composite skyscape was recorded in 2018 in Teide National Park in the Canary Islands, Spain.
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Tue May 21, 2019 4:50 am
by Ann
That is a beautiful image, but I think it is inverted?
Ann
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Tue May 21, 2019 5:10 am
by Nitpicker
Yes, it is north up, east right. Flip!
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Tue May 21, 2019 11:30 am
by orin stepanek
I like it anyway!
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Tue May 21, 2019 1:20 pm
by neufer
. "You are old, Father William," the young man said,
"And your hair has become very white;
And yet you incessantly stand on your head—
Do you think, at your age, it is right?"
"In my youth," Father William replied to his son,
"I feared it might injure the brain;
But now that I'm perfectly sure I have none,
Why, I do it again and again."
Ann wrote: ↑Tue May 21, 2019 4:50 am
That is a beautiful image, but I think it is inverted?
Yes, it is north up, east right. Flip!
I like it anyway!
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Tue May 21, 2019 4:44 pm
by varadinagypal
These oversaturated overprocessed clickbait whatevers -- I am fairly sure this is not the direction astrophotography should head to.
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Tue May 21, 2019 7:18 pm
by Fred the Cat
The colors of wispy wisteria.
Maybe a little sagi'
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Tue May 21, 2019 7:22 pm
by RCompassi
varadinagypal wrote: ↑Tue May 21, 2019 4:44 pm
These oversaturated overprocessed clickbait whatevers -- I am fairly sure this is not the direction astrophotography should head to.
I agree 100%
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Tue May 21, 2019 8:44 pm
by JohnD
Once again, looks just like a stomach ulcer!
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Tue May 21, 2019 9:08 pm
by neufer
JohnD wrote: ↑Tue May 21, 2019 8:44 pm
Once again, looks just like a stomach ulcer!
Thanks for sharing, John.
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Wed May 22, 2019 12:24 am
by BjoernH
Please explain to me why this (bad) image was chosen, even though it shows an inverted and false look at this beautiful region! One can argue about the processing, but modified image orientations are a curse!
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Wed May 22, 2019 2:13 am
by Nitpicker
BjoernH wrote: ↑Wed May 22, 2019 12:24 am
Please explain to me why this (bad) image was chosen, even though it shows an inverted and false look at this beautiful region! One can argue about the processing, but modified image orientations are a curse!
I also don't like mirror images as much, but they are more often unmodified image orientations, created with an odd number of mirrors in the light path, between the object and the camera sensor. It seems some astrophotographers don't feel the same urge to modify their mirror images as a final step.
(Even the stars on the Brazilian flag are mirrored. And I think it was done deliberately. So some people must actually prefer mirror images.)
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
BjoernH wrote: ↑Wed May 22, 2019 12:24 am
One can argue about the processing,
but modified image orientations are a curse!
I also don't like mirror images as much, but they are more often unmodified image orientations, created with an odd number of mirrors in the light path, between the object and the camera sensor. It seems some astrophotographers don't feel the same urge to modify their mirror images as a final step.
(Even the stars on the Brazilian flag are mirrored.
And I think it was done deliberately.)
One must preserve parroty.
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Wed May 22, 2019 3:15 am
by Boomer12k
I like the detail, and the expanse...I don't always THINK to flip my images...but my new software for the ZWO camera can do it while imaging.
My old M20 from my 10" Meade from 2013...with my old DSI 2 color camera... processed to bring out the vibrancy of colors. Central close up view...
:---[===] *
Re: APOD: Deep Field: Nebulae of Sagittarius (2019 May 21)
Posted: Wed May 22, 2019 3:57 am
by Nitpicker
It occurs to me now, that pretty much all flags bearing stars from our sky, will have the stars appearing mirrored on their reverse sides.
But the Brazilian flag is one of those rare flags that is identical on both sides, so the stars are mirrored on both sides.
Deep Field: Nebulae of Sagittarius
