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| 1 | 2 | 3 | 4 | 5 |  » Stats |
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23-11-2008, 10:36 AM
|  | Member of the Wild Empire | | Join Date: Oct 2008
Posts: 397
| | | planet Eris far,far away
Been pushing my telescope to the limit by recording dwarf planet Eris - the remotest body in the solar system in this 15 min exposure.
Eris [disc 2003] is larger than Pluto [disc 1930] but twice as far away eg 100-times further from the sun than earth so it's very cold out there!
The picture is shown as a negative for clarity with a comparison shot of the same region of the sky Eris currently occupies taken at Mt Palomar in the States before discovery. Eris is a tiny faint dot moving extremely slowly against the background stars and takes 560yrs to orbit the sun 
Eris, in Greek mythology, was a spiteful godess who caused wars  With so many new dwarf planets in the outer solar system astrologers must be confused  
Last edited by nytecam; 23-11-2008 at 10:48 AM.
Reason: spelling
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23-11-2008, 10:54 AM
|  | Commander of the Wild Empire | | Join Date: Aug 2008
Posts: 4,323
| | | Re: planet Eris far,far away
That's very interesting - I've learnt something new today. That is such a small "dot". I don't know how you managed to find it  |
23-11-2008, 11:16 AM
| | Member of the Wild Empire | | Join Date: Oct 2008
Posts: 397
| | | Re: planet Eris far,far away
Quote:
Originally Posted by Hedge Witch  That's very interesting - I've learnt something new today. That is such a small "dot". I don't know how you managed to find it | Hi HW - I Googled JPL-Horizon website that precisely computes planet positions in real-time but then you have to aim your scope at a tiny region of sky and track accurately ['cos the earth rotates!], in this case for 15 minutes of the exposure. 
Did a 2nd pic last night but slightly out of focus [blurred] so not much use to see if Eris had 'moved'.  but will try again.
As a result of posting my pic on another forum got news that French amateur astronomers had recently recorded Eris and my picture matches perfectly with theirs showing Eris' regular but slow motion against the stars |
23-11-2008, 03:36 PM
|  | Commander of the Wild Empire | | Join Date: Oct 2005 Location: N.Cheshire
Posts: 1,390
| | | Re: planet Eris far,far away
Impressive stuff nytecam.....I'd never heard of planet Eris till today! 
Do keep posting.....I'm learning loads here! |
23-11-2008, 07:25 PM
|  | Commander of the Wild Empire | | Join Date: Aug 2008 Location: Preston in NW
Posts: 3,626
| | | Re: planet Eris far,far away
great job Nytecam. I didn't even know this planet existed. Is it part of the Kuiper Belt or further out in the Oort Cloud? |
23-11-2008, 07:59 PM
|  | Commander of the Wild Empire | | Join Date: Sep 2008 Location: Red Rose County
Posts: 2,925
| | | Re: planet Eris far,far away
Quote:
Originally Posted by KeenTeen17 Is it part of the Kuiper Belt or further out in the Oort Cloud? | It is in eccentric orbit extending beyond the Kuiper Belt - what is known as a trans-Neptunian scattered disc object. (Or, as some prefer, a scattered Kuiper belt object).
Regards
Mike.
__________________
Common sense is not so common. - Emotion is a blind dog to the bone of reason. |
24-11-2008, 08:36 AM
| | Member of the Wild Empire | | Join Date: Oct 2008
Posts: 397
| | | Re: planet Eris far,far away
Last edited by nytecam; 24-11-2008 at 08:41 AM.
Reason: correction
|
29-11-2008, 10:10 AM
| | New Member | | Join Date: Nov 2008 Location: Newcastle
Posts: 10
| | | Re: planet Eris far,far away
Wow. I never even knew this existed untill today! Thanks
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