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Astronomy Picture of the Day. April 28, 2024. Messier 57
Posted on 4/28/24 at 10:21 am
Posted on 4/28/24 at 10:21 am
Explanation: The Ring Nebula (M57) is more complicated than it appears through a small telescope. The easily visible central ring is about one light-year across, but this remarkably deep exposure - a collaborative effort combining data from three different large telescopes - explores the looping filaments of glowing gas extending much farther from the nebula's central star. This composite image includes red light emitted by hydrogen as well as visible and infrared light. The Ring Nebula is an elongated planetary nebula, a type of nebula created when a Sun-like star evolves to throw off its outer atmosphere and become a white dwarf star. The Ring Nebula is about 2,500 light-years away toward the musical constellation Lyra.
APOD
Here is an image I made of this nebula through a small (4½" reflector telescope) a few years ago.
7
Posted on 4/28/24 at 10:26 am to blueridgeTiger
Fake, just like the moon landing.
Posted on 4/28/24 at 10:33 am to blueridgeTiger
Every pixel in that photo is much larger than Earth.
Posted on 4/28/24 at 10:35 am to blueridgeTiger
quote:
the musical constellation Lyra
So Lyra is the musical constellation, and beans are the musical fruit.
Posted on 4/28/24 at 10:44 am to blueridgeTiger
Beautiful and thought provoking image.
We are a very, very small part of the Universe.
We are a very, very small part of the Universe.
Posted on 4/28/24 at 10:50 am to blueridgeTiger
Is that the nebula they call The Eye of God? Or am I thnking of another one?
Posted on 4/28/24 at 10:53 am to blueridgeTiger
Messier 11
Posted on 4/28/24 at 10:56 am to Mr Breeze
quote:It's a composite image. Meaning it is more art than photography
Beautiful and thought provoking image.
This post was edited on 4/28/24 at 12:02 pm
Posted on 4/28/24 at 10:59 am to LSUFreek
quote:
Is that the nebula they call The Eye of God? Or am I thnking of another one?
M 57 is not the Eye of God nebula, which looks very similar. The Eye of God nebula is more popularly called the Helix Nebula, or NGC-7293:
Posted on 4/28/24 at 11:05 am to blueridgeTiger
Is the red colored matter moving away and blue/green moving towards us? Or is that a different kind of light analysis?
Posted on 4/28/24 at 11:19 am to North Dallas Tiger
quote:
It's a composite image. Meaning it is more art than photography.
Depends on the wavelength being sampled, like this one from Hubble. Combining them into a composite doesn't mean it's misrepresented. That process in photography has been known and used successfully for quite a long time.
Posted on 4/28/24 at 11:26 am to GRTiger
quote:
Is the red colored matter moving away and blue/green moving towards us? Or is that a different kind of light analysis?
The colors are not the same as the red-shift/blue-shift for analyzing object speed. These colors do not indicate relative velocity but rather indicate the composition of the nebula.
Blue: The central blue region represents ionized helium. This helium is primarily close to the hot core of the white dwarf.
Cyan: The inner ring glows due to ionized hydrogen and oxygen.
Reddish: The outer ring’s reddish hue comes from ionized nitrogen and sulfur.
These colors are a result of the nebula’s chemical composition and the interaction of ultraviolet light with the surrounding gas
Posted on 4/28/24 at 11:29 am to blueridgeTiger
Thanks 
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