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17 votes

Why does the cloud of Orion Nebula appear more distinct when I am not directly looking at it?

This is called the Averted vision. It involves not looking directly at the object, but looking a little off to the side. How does it works? Because the retina is less sensitive at the center, and ...
Matthieu Charbonnier's user avatar
13 votes
Accepted

Are these images of the same nebula?

Yes, sort of. But the Chandra image is of just a small portion at the centre of the Spitzer image. Astronomical objects often have different appearances at different wavelengths. In the case of the ...
ProfRob's user avatar
  • 155k
8 votes

Orion stars distance from Earth

This is a real problem with star distances, and one that isn't well appreciated. We just don't know how far many large, bright, distant stars are. The values you will find on Wikipedia, which are ...
James K's user avatar
  • 125k
7 votes

Orion stars distance from Earth

I'm not sure if you can get the VERY latest measurements there, but Simbad is always good for finding stars by criteria and learning more about existing ones, though it's not the most intuitive site ...
Kazon's user avatar
  • 587
7 votes

Orion Skyquest xt8i Intelliscope Dobsonian Telescope Lens

The telescope you have is quite well regarded, and the eyepieces that come with it are of reasonable quality. If you can see the moon clearly, including craters and other features, then you should be ...
Dr Chuck's user avatar
  • 4,349
6 votes
Accepted

Is there a way to find polar star after identifying Orion's belt?

Would that help me to identify Polar star? Probably yes In the above picture, you will see that in the Orion belt, if you construct an imaginary line that passes through Saiph, Meissa (to be ...
Kavin Ishwaran's user avatar
5 votes
Accepted

Orion constellation shape

Just look at how Orion looks in the Sky. I added the lines in yellow showing the (slightly deformed rectangle) based on this image by By Mouser on Wikipedia CC-BY: while the white lines are the usual ...
planetmaker's user avatar
  • 19.9k
5 votes

Orion stars distance from Earth

The database Augmented Tycho-HYG (v1.0) from http://www.astronexus.com/hyg uses parallax records from Hipparcos and uses updated Gaia DR3 distances where available. Luckily the records show "...
DocLeonard's user avatar
4 votes

How to locate nebulas visible through AstroMaster 114 telescope without device assistance?

Those targets are good choices for beginners at the right times of year. However, in June M42 is a daytime object, and M31 rises in the wee hours, leaving only M13 and Albireo in the evening. Other ...
Mike G's user avatar
  • 18.7k
3 votes

How to locate nebulas visible through AstroMaster 114 telescope without device assistance?

If you have a Laptop or Notebook you can download one of several planetarium programs like Stellarium or Cartes du Ciel. They will display large areas of the sky that will help orient you initially. ...
L d Bonnie's user avatar
3 votes

Why does the cloud of Orion Nebula appear more distinct when I am not directly looking at it?

The effect you describe is called "averted vision". It works because the center of the retina is optimized for details. We use it for reading and anything that needs sharp vision. The other parts ...
user3150208's user avatar
1 vote

Is there a way to find polar star after identifying Orion's belt?

This is mostly to show that the image in Kavin's answer is just an artifact of the projection used. I have turned on the equitorial grid lines and placed Orion horizontally equal with Polaris, so ...
Greg Miller's user avatar
  • 5,932
1 vote

Did I see a satellite (or space station)?

Stellarium is showing SL-14 R/B rocket body passing Pollux around 19:22 hrs but it is heading east and doesn't approach Castor. Also, at 19:33 NOSS 3-3 r, the Centaur upper stage for the NOSS 3-3 ...
Dave Gremlin's user avatar
  • 1,071
1 vote
Accepted

Did I see a satellite (or space station)?

Yes, that sounds very much like a satellite. It may have been the Cosmos 2278 rocket, a rocket that was used to launch a military (spy) satellite by Russia in 1994. Satellites and particularly ...
James K's user avatar
  • 125k
1 vote

Different sizes of bow shocks

After a bit of searching in Aladin. I found that the other star is V* V2170 Ori. By comparing their respective Simbad pages one can see the following: LL Ori is actually slightly further away. V2170 ...
SpaceCore's user avatar
  • 3,441

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