Jupiter´s unusual wide rings.A bug?

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danielj
Posts: 1477
Joined: 15.08.2003
With us: 21 years 3 months

Jupiter??s unusual wide rings.A bug?

Post #1by danielj » 29.07.2005, 13:17

In a Jupiter script,you normally see the gossamer rings.I think these are the only rings in the planet.But specially when the ambient light is set to medium,you can see a much larger and fainter ring,that I think it wasn??t to be here.
Let??s see what I mean:
http://us.f1f.yahoofs.com/bc/f4386be8_m ... CBAQWnZJ7a

http://us.f1f.yahoofs.com/bc/f4386be8_m ... CBrZQHT8Ni

If this don??t open,try http://br.f1.pg.briefcase.yahoo.com/djansenferreira and look for Jupiter ring error.jpg and Jupiter ring error closer.jpg
I know that it??s barely visible,but anyway I didn??t remember of a much fainter ring around the gossamer ring.Or does it exist?

This happened when specially when the resolution of the ring texture changed to 2048X64.Do anyone have an idea where I can find a smaller resolution ring texture?

Spaceman Spiff
Posts: 420
Joined: 21.02.2002
With us: 22 years 9 months
Location: Darmstadt, Germany.

Post #2by Spaceman Spiff » 29.07.2005, 13:53

Hi danielj,

yes, Jupiter does have an extended fainter ring apart from the brighter one. Your pictures show that you have to turn the monitor brightness right up and be in a dark room to see it.

The NASA web page gives details of two rings: Jupiter Rings fact Sheet. But this seems to show the fainter one is only on the inside of the brighter one, not on both sides. Check also Jupiter's Ring System, which shows that there are four 'rings', the two mentioned (main and halo and two more that are even fainter and come from Amalthea and Thebe. It's these last two that are called the gossamer rings.

You can check the ring PNG in Celestia with a graphics programme to see that the ring is being displayed 'correctly' and isn't a bug, even if it doesn't agree with the NASA web page.

So, not a bug I suspect, just a 'data error'.

Spiff.


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