Jupiter Facts

[morse86]

I would like to here those explanations and why astronomers are mistaken in telling us that it is the fifth planet from our Sun.

The planetary system can be mapped according to a globe, flat, concave, or convex earth. That doesn't prove anything. It works BOTH in the globe and flat earth. Just because something orbits faster, doesn't mean anything.

 

[Kylie]

I'm sorry, have you been to Jupiter? If you had a analog telescope, all you saw was a 2D image. Anything more is trusting "NASA" by faith.

Please don't use a digital telescope and say you saw Jupiter. You didn't see Jupiter, you saw CGI.

lol, that's awesome, where did you hear this?

 

[Radrook]

The planetary system can be mapped according to a globe, flat, concave, or convex earth. That doesn't prove anything. It works BOTH in the globe and flat earth. Just because something orbits faster, doesn't mean anything.

Jupiter is actually orbiting slower than the Earth is because it is farther from the Sun and supposedly requires less speed to prevent it from being pulled in. We orbit the Sun 11 times for every one orbit of Jupiter.

Jupiter - Wikipedia

BTW
The base of Jupiter's atmosphere is considered to be where it is 1 bar or the equivalent of one earth atmosphere. From that level it extends upward for approx. 3000 miles.

 

[Aldebaran]

I'm sorry, have you been to Jupiter? If you had a analog telescope, all you saw was a 2D image. Anything more is trusting "NASA" by faith.

Please don't use a digital telescope and say you saw Jupiter. You didn't see Jupiter, you saw CGI.

I used to have an 8" reflector telescope and saw Jupiter many times. I now have a pair of 7x35mm binoculars and can still see the moons. With my eyes alone, I can still see Jupiter.

 

[Radrook]

I used to have an 8" reflector telescope and saw Jupiter many times. I now have a pair of 7x35mm binoculars and can still see the moons. With my eyes alone, I can still see Jupiter.

You say you can see the bands on Jupiter actually moving across its surface?

Atmosphere of Jupiter - Wikipedia

I thought that was only possible with a huge telescope and waiting for many days!

 

[Aldebaran]

You say you can see the bands on Jupiter actually moving across its surface?

Atmosphere of Jupiter - Wikipedia

I thought that was only possible with a huge telescope and waiting for many days!

I couldn't see them actually moving. Almost nothing in the sky can be seen moving except over a period of time--usually a long period of time. But the image isn't like what you see in most pictures. Those pictures that have all the glorious details are usually from space probes that have actually been there. But here's a very accurate idea of what you can see in an 8" telescope: http://soggyastronomer.com/wp-content/uploads/2013/02/CombinedJupiter21.jpg You can see a few cloud bands on the planet, and the 4 largest moons around it.

 

[Radrook]

I couldn't see them actually moving. Almost nothing in the sky can be seen moving except over a period of time--usually a long period of time. But the image isn't like what you see in most pictures. Those pictures that have all the glorious details are usually from space probes that have actually been there. But here's a very accurate idea of what you can see in an 8" telescope: http://soggyastronomer.com/wp-content/uploads/2013/02/CombinedJupiter21.jpg You can see a few cloud bands on the planet, and the largest moons around it.

It is a real shame that Jupiter's extremely fascinating moons, especially Europa with its extensive fields of ice are bathed by Jupiter's intense radiation and make an approach and personal human exploration on the surface extremely hazardous.
Juno Radiation Vault - Wikipedia



The Galilean moons Io, Europa, Ganymede, Callisto (in order of increasing distance from Jupiter)

 

[Radrook]

I believe one easy way of doing it safely would be to put a sheet of paper with a small hole in it over the objective lens before pointing it at the sun. That would cut down on how much light would get it and prevent damage. I never actually did that, so I don't know if that would actually work. Another idea is to simply use a tinted sheet of plastic or glass over the objective to cut down on the intensity. Sort of like sunglasses for your telescope. But before anyone takes issue with this, keep in mind that I'm still referring to using the telescope as a solar projector--NOT for looking at the sun directly through the telescope.

Care also has to be taken when attempting to watch a total eclipse since one might miscalculate and not catch it precisely at its safest moment.

Since looking directly at the Sun can lead to permanent eye damage or blindness, special eye protection or indirect viewing techniques are used when viewing a solar eclipse. It is technically safe to view only the total phase of a total solar eclipse with the unaided eye and without protection; however, this is a dangerous practice, as most people are not trained to recognize the phases of an eclipse, which can span over two hours while the total phase can only last up to 7.5 minutes for any one location.
Solar eclipse - Wikipedia

BTW
why would the light at the rims not harm the eye during a total eclipse?

 

[Kylie]

BTW
why would the light at the rims not harm the eye during a total eclipse?

It doesn't harm the eye because the disk of the sun is blocked, so only a little light is getting into the eye. It's also why it gets dark. But because it's dark, your pupil will expand, and when the moon moves and the sun is suddenly visible again, that's a sudden burst of very bright light, and that is what does the damage.

 

[Radrook]

It doesn't harm the eye because the disk of the sun is blocked, so only a little light is getting into the eye. It's also why it gets dark. But because it's dark, your pupil will expand, and when the moon moves and the sun is suddenly visible again, that's a sudden burst of very bright light, and that is what does the damage.

Imagine all the people throughout history who were unaware of the Sun's damage to the eyes and tried to force themselves to look at it in order to get a better view. As a kid I recall breiefly doing so several times. Maybe kids should be warned early about the danger of attempting it.

 

[Aldebaran]

It is a real shame that Jupiter's extremely fascinating moons, especially Europa with its extensive fields of ice are bathed by Jupiter's intense radiation and make an approach and personal human exploration on the surface extremely hazardous.
Juno Radiation Vault - Wikipedia



The Galilean moons Io, Europa, Ganymede, Callisto (in order of increasing distance from Jupiter)

I think it's possible to create a shield against the radiation. The Juno probe that recently arrived at Jupiter has extensive shielding for this reason. Juno is going to be orbiting Jupiter closer than any other probe has so far.
BTW, there are quite a few pictures from Juno available to see: JunoCam : Processing | Mission Juno

 

[Radrook]

I think it's possible to create a shield against the radiation. The Juno probe that recently arrived at Jupiter has extensive shielding for this reason. Juno is going to be orbiting Jupiter closer than any other probe has so far.
BTW, there are quite a few pictures from Juno available to see: JunoCam : Processing | Mission Juno

If a machine needs that musch protection the we will need far more than it does because we are flimsier. Thanks for the links. Will check out the photos!

For some reason, these new photos don't harmonize with the previous neat looking photos that were provided by other missions. What gives?

 

[Shemjaza]

If a machine needs that musch protection the we will need far more than it does because we are flimsier. Thanks for the links. Will check out the photos!

For some reason, these new photos don't harmonize with the previous neat looking photos that were provided by other missions. What gives?

I imagine it's just a matter of higher detail pictures.

The same way a mountain looks like a smooth grey or blue shape from a distance, but has much more detail in a higher resolution picture.

 

[Radrook]

I imagine it's just a matter of higher detail pictures.

The same way a mountain looks like a smooth grey or blue shape from a distance, but has much more detail in a higher resolution picture.

For a brief moment I remembered all the accusations made by flat Earthers that NASA is just making up all these images. LOL!
Thanks for the explanation. Makes sense.

 

[Aldebaran]

For some reason, these new photos don't harmonize with the previous neat looking photos that were provided by other missions. What gives?

One reason I believe they look so different is because the viewing angle is different. Juno is using a polar orbit around the planet, and the images are of the polar regions rather than the views we've seen in the past.

 

[Radrook]

One reason I believe they look so different is because the viewing angle is different. Juno is using a polar orbit around the planet, and the images are of the polar regions rather than the views we've seen in the past.

Aha! That explains the weird unusual configurations of the clouds. Thanks! Was beginning to worry we had somehow been duped in the past.

 

[Kylie]

Imagine all the people throughout history who were unaware of the Sun's damage to the eyes and tried to force themselves to look at it in order to get a better view. As a kid I recall breiefly doing so several times. Maybe kids should be warned early about the danger of attempting it.

It's actually more dangerous doing it during an eclipse. If you just do it on a non-eclipse, then the sun is already bright and your iris constricts to reduce the amount of light. But during an eclipse it is dark, so your iris opens up wide, so when the sun reappears, you are getting a much bigger hit of light. That's what causes the damage.

 

[Radrook]

It's actually more dangerous doing it during an eclipse. If you just do it on a non-eclipse, then the sun is already bright and your iris constricts to reduce the amount of light. But during an eclipse it is dark, so your iris opens up wide, so when the sun reappears, you are getting a much bigger hit of light. That's what causes the damage.

That is very useful information. Thanks for posting it. It could very well prevent people reading it from actually doing permanent damage to their eyes by staring at an eclipse for too long in a false sense of security that it is just an eclipse.

 

[timewerx]

I actually have a telescope at home and was able to see Jupiter when it was closer to Earth in its orbit, really cool.

I built myself a small telescope from a projector lens and it can make out some of its features and some of its brightest moons.

Yes, Jupiter is very cool and is one of the easiest to spot in the sky and also Saturn!

 

[timewerx]

That is very useful information. Thanks for posting it. It could very well prevent people reading it from actually doing permanent damage to their eyes by staring at an eclipse for too long in a false sense of security that it is just an eclipse.

You can actually use an ordinary telescope to ***indirectly**** observe the Sun

If you manage to point the telescope towards the Sun without looking through the telescope(and without looking at the Sun for your safety), set the focus to infinity and get a piece of paper at some distance from the eyepiece lens. It will project an enlarged image of the sun at the paper!

Best results if the lower part of the telescope is obscured from outside light like in a dark room. The projected image would be much clearer and you might make out some features like sunspots. If you can't see the sunspots, you'll need to place a tinted glass at the objective lens (the main big lens) to reduce the light getting into the telescope.