<< Previous Next >>

M 42:Orion Nebula

M 42:Orion Nebula
Photo Information
Copyright: Hernan Tolosa (saguzar) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1095 W: 72 N: 1394] (7202)
Genre: Landscapes
Medium: Color
Date Taken: 2001-04
Categories: Sky
Camera: Zenith 12 XP, Tair 300mm
Exposure: f/2, 3 seconds
Photo Version: Original Version
Theme(s): Heavens Above [view contributor(s)]
Date Submitted: 2006-05-15 16:03
Viewed: 4491
Points: 20
[Note Guidelines] Photographer's Note [Spanish]
The Orion Nebula is one of the most interesting objects in the sky. To the naked eye, it looks like a star in the sword of the constellation Orion, but with binoculars or a telescope, you can see that it is actually a large glowing cloud of material. This is believed to be a huge star formation region about 1630 light years away. The bright part of the nebula is the glow of many luminous, newborn stars shining on the surrounding gas cloud that they collapsed from. The most important part of the Orion Nebula is the part we can't see: the opaque Orion Molecular Cloud. This is a huge clump of very cold gas that has a total mass of about 2000 times the mass of the Sun. The gas from this cloud slowly collapses due to gravity to form stars. Whenever a bright, new star is formed, its light evaporates the opaque gaseous "womb" it formed from, allowing us to see it.

The stars that are being born in the Orion Nebula are part of what astronomers call an "open cluster." When all of the stars are done being born, what will remain is a clump of a few hundred to a thousand stars which are all roughly the same age (give or take a few tens of millions of years!). These stellar siblings are dominated by a few very massive, very very bright stars called the Trapezium. The Trapezium is made up of just a few stars, but it outshines all the rest of them combined. Astronomers believe that the majority of the glow from the gas in the nebula comes from light from the stars of the Trapezium. Maybe in a few hundred million years, there will be planets like the Earth forming around some of the new stars in the cluster.

Data from an interesting site:

annagrace, Fisher, Signal-Womb, marhowie, scottevers7, Robbrown, loot, hekcik, zeca, aido has marked this note useful
Only registered TrekNature members may rate photo notes.
Add Critique [Critiquing Guidelines] 
Only registered TrekNature members may write critiques.
ThreadThread Starter Messages Updated
To aido: Orionsaguzar 2 05-24 17:24
To red45: orion nebulasaguzar 1 05-22 17:42
You must be logged in to start a discussion.

Critiques [Translate]

Wonderful note and a cool image too. Thanks for sharing.


  • Great 
  • Fisher Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1540 W: 309 N: 2234] (8915)
  • [2006-05-15 17:33]

Hi Herman,

Excellent work!!! Well done on the composition and presentation.
We just completed a Tourism Board full of images which I donated and info of our township.
Tehkummah, meaning, "Ray of light in the sky." An astronomer captured the orion nebula with the gases as you mentioned. He had a huge telescope to capture this. Anyhow, it is used on our board. TFS.


Great post Hernan, many a night I have sat into the small hours in my observatory looking into that Nebula were stars are born. Well done.

Hi Hernan,
Excellent job on this astronomy shot. Very interesting notes to detail all this. Well done!

Hi Hernan,
Great job on this. Interesting notes with this one. Orion's Nebula is very well seen. Excellent work, Thank You!

  • Great 
  • loot Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5524 W: 722 N: 4163] (11276)
  • [2006-05-17 2:50]

Hi Hernan
This is an excellent and very interesting photo. However, at f/2 aperture I think you were just a little bit shallow on your DOF. Maybe you should have tried f/2.1 for better details. Ha-ha-ha just a little joke my friend. I think you have done great with this shot and your notes are very informative. I'm not sure if this is a first time shot for TN, but congratulations on a very original posting and TFS.
Friendly Regards

Hi Herman,
Curious idea on photo :-)
It pleases :-)
TFS Malgosia

  • zeca Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 373 W: 14 N: 539] (2887)
  • [2006-05-18 0:31]

Very interesting capture, Hernan! Nice note also!
(green face tomorrow!)

Hi Herman,

Interesting shot and notes.
Well done on the composition and presentation.

TFS :-)

  • Great 
  • red45 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2636 W: 74 N: 9091] (31094)
  • [2006-05-21 13:29]
  • [+]

Hello Hernan!
Surprisingly good results as for only 3 seconds. Stars are well visible, but best of all is Great Nebula - red colour looks great. Your descriptions help to understand what we see. One of my favourite space regions very well taken my friend!

  • Great 
  • aido Gold Star Critiquer/Gold Star Workshop Editor [C: 1044 W: 156 N: 1218] (4046)
  • [2006-05-24 15:50]
  • [+]

Hi Hernan,
Very informative. I'm amazed by the picture, I'm guessing it was taken through a telescope. I wish I could get that close, but as I can't I'm more than happy to sit and see your images and read your notes. Excellent post.

Calibration Check