ICEINSPACE
Moon Phase
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27-09-2005, 08:20 PM
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Planet photographer
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Join Date: May 2005
Location: Bundaberg
Posts: 8,819
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Yeah, I must confess I did'nt bother entering the comp for the same reason Ken..Not my idea of fun.  But everyone to their own hey!
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27-09-2005, 08:24 PM
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The 'DRAGON MAN'
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Join Date: Jan 2005
Location: In the Dark at Snake Valley, Victoria
Posts: 14,412
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Cheryl gave it a go but found conflicting answers in different googled sites! Work that one out.
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27-09-2005, 08:46 PM
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Registered User
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Join Date: Mar 2005
Location: S.A.
Posts: 1,079
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Netwolf
So PG1034+001 is the white dwarf in Hewett1 ?
Therefore Hewett1 comes out on top as the largest ?
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27-09-2005, 09:00 PM
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Registered User
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Join Date: Jan 2005
Location: Sale, VIC
Posts: 6,033
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According to a very recent issue of S&T Sh 2-216 is the largest PN. But, just like galaxies, the sizes of these objects are fuzzy, because they are defined by the the ability of the instruments available to distinguish material in the object from the background sky. As the instruments get better, the measured sizes of nebulae and galaxies grow.
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27-09-2005, 09:09 PM
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Registered User
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Join Date: Mar 2005
Location: S.A.
Posts: 1,079
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Quote:
Originally Posted by janoskiss
According to a very recent issue of S&T Sh 2-216 is the largest PN. But, just like galaxies, the sizes of these objects are fuzzy, because they are defined by the the ability of the instruments available to distinguish material in the object from the background sky. As the instruments get better, the measured sizes of nebulae and galaxies grow.
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So using that assessment Steve the Helix should still be regarded as the largest as neither you nor I can see any of the others in our scopes
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27-09-2005, 09:32 PM
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Registered User
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Join Date: Jan 2005
Location: Sale, VIC
Posts: 6,033
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No, Slice, it's not what we as individuals can see. It's about what is known. And what is known is revealed by the best instruments there are here on Earth and also in space.
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27-09-2005, 09:40 PM
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The 'DRAGON MAN'
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Join Date: Jan 2005
Location: In the Dark at Snake Valley, Victoria
Posts: 14,412
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I like simple questions like: How far is 'up'?
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27-09-2005, 09:57 PM
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Registered User
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Join Date: Jan 2005
Location: Sale, VIC
Posts: 6,033
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Simple questions are the hardest to answer.
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27-09-2005, 10:24 PM
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Registered User
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Join Date: Mar 2005
Location: Shoalhaven Heads, NSW
Posts: 2,620
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Quote:
Originally Posted by slice of heaven
So using that assessment Steve the Helix should still be regarded as the largest as neither you nor I can see any of the others in our scopes 
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Not IMO
The question was:-
Quote "What is the largest (degrees of arc) planatery nebula?"
I don't see how the Helix fits this criteria in any way other than a lot of people probably gave it as their answer. I don't see the words "visible in 16 telescopes or smaller" anywhere in the wording of the question.
CS-John B
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27-09-2005, 10:48 PM
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Hapkido = Pain
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Join Date: May 2005
Location: Newcastle NSW
Posts: 1,014
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Gee do we all have to be so pedantic about this? I got all the answers Mike posted after a lot of hard research, some of it quite conflicting. But don't forget it was meant as a bit of fun and the judges decision is final. I knew something like this was going to happen, the site has been getting a bit petty lately and that was the reason I didn't enter the comp. I had a real blsst finding the answers and learnt a lot along the way. That was the real prize for me.
Gazz
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27-09-2005, 10:53 PM
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Plays well with others!
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Join Date: Nov 2004
Location: Ridgefield CT USA
Posts: 3,535
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According to Doug Snyder from the Planetary Nebulae Observers Home Page ( www.blackskies.com) in an e-mail I recieved from him when replying to the question stated that Hewitt1 was the current largest but that the answer could and would change as new observations with more sensitive equipment were made...
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27-09-2005, 11:04 PM
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Registered User
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Join Date: Jan 2005
Location: Sale, VIC
Posts: 6,033
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Gazz, judges decisions may be final, but don't let that stop us arguing about them.  It's half the fun!
I'll throw another one in for fun:
"Q 15: What percentage of sunlight is reflected from the Moon?"
What does that say? Consider how much sunlight there is (A) and how much of that light is reflected by the Moon (B). Then the answer to the question is the ratio of B to A in percentage units. And the answer is around a billionth of one percent. Not anywhere near the judges' answer.
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27-09-2005, 11:16 PM
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The 'DRAGON MAN'
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Join Date: Jan 2005
Location: In the Dark at Snake Valley, Victoria
Posts: 14,412
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I think everyone that entered should be placed in the draw coz you all tried. That's gotta be worth something. Sods like me miss out coz I was too lazy to study and that's fair too.
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27-09-2005, 11:21 PM
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Registered User
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Join Date: Mar 2005
Location: Shoalhaven Heads, NSW
Posts: 2,620
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Quote:
Originally Posted by cahullian
Gee do we all have to be so pedantic about this?.  Gazz
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Gaz,
Stirring the pot and chewing the fat is 1/2 the fun.
CS-John B
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28-09-2005, 12:03 AM
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Sir Post a Lot!
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Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
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Ken,
Next quiz we'll make the question like those raffle tickets..
Quote:
Fill in the blanks..
I_EIN_PAC_
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That way, everyone will get off their butt and enter!
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28-09-2005, 07:04 AM
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Registered User
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Join Date: Mar 2005
Location: S.A.
Posts: 1,079
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Quote:
Originally Posted by janoskiss
No, Slice, it's not what we as individuals can see. It's about what is known. And what is known is revealed by the best instruments there are here on Earth and also in space.
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Then why quote a source with out of date information that names SH 2-216 as the largest PN?
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28-09-2005, 07:07 AM
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Registered User
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Join Date: Mar 2005
Location: S.A.
Posts: 1,079
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Quote:
Originally Posted by ausastronomer
Not IMO
The question was:-
Quote "What is the largest (degrees of arc) planatery nebula?"
I don't see how the Helix fits this criteria in any way other than a lot of people probably gave it as their answer. I don't see the words "visible in 16 telescopes or smaller" anywhere in the wording of the question.
CS-John B
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I agree John
I was only replying to the statement Steve made.
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28-09-2005, 07:24 AM
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Registered User
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Join Date: Mar 2005
Location: S.A.
Posts: 1,079
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Quote:
Originally Posted by cahullian
Gee do we all have to be so pedantic about this? I got all the answers Mike posted after a lot of hard research, some of it quite conflicting. But don't forget it was meant as a bit of fun and the judges decision is final. I knew something like this was going to happen, the site has been getting a bit petty lately and that was the reason I didn't enter the comp. I had a real blsst finding the answers and learnt a lot along the way. That was the real prize for me.
Gazz
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Gazz, I only brought the subject up to see which PN rightfully should be wearing the crown,out of pure curiousity, not to doubt the validity of the answers. I Pm'd Mike before submitting the answer to that question and happily accepted his reply.
Yes it was fun doing the search, I learnt a lot more than just the answers to the questions. I cant wait for the next one.
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