*** IceInSpace 1st Birthday Competition! ** Answers Released ** - Page 9

slice of heaven · #**161** 27-09-2005, 08:20 PM

Thanks John.
Hewett 1 is over 2 degs, but extremely faint and probably not visible in amateur scopes visually.
http://www.rdcrisp.darkhorizons.org/Hewett1_page.htm

asimov (John) · #**162** 27-09-2005, 08:20 PM

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!

ballaratdragons (Ken) · #**163** 27-09-2005, 08:24 PM

Cheryl gave it a go but found conflicting answers in different googled sites! Work that one out.

netwolf · #**164** 27-09-2005, 08:24 PM

This was my source
"The Largest Known Planetary Nebula on the Sky"
http://www.ing.iac.es/PR/newsletter/news8/science2.html

I also mentioned SH2-216.

slice of heaven · #**165** 27-09-2005, 08:46 PM

Netwolf
So PG1034+001 is the white dwarf in Hewett1 ?
Therefore Hewett1 comes out on top as the largest ?

janoskiss (Steve H) · #**166** 27-09-2005, 09:00 PM

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.

slice of heaven · #**167** 27-09-2005, 09:09 PM

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.

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

janoskiss (Steve H) · #**168** 27-09-2005, 09:32 PM

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.

ballaratdragons (Ken) · #**169** 27-09-2005, 09:40 PM

I like simple questions like: How far is 'up'?

janoskiss (Steve H) · #**170** 27-09-2005, 09:57 PM

Simple questions are the hardest to answer.

ausastronomer (John Bambury) · #**171** 27-09-2005, 10:24 PM

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

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

cahullian · #**172** 27-09-2005, 10:48 PM

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

wavelandscott (Scott) · #**173** 27-09-2005, 10:53 PM

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...

janoskiss (Steve H) · #**174** 27-09-2005, 11:04 PM

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.

ballaratdragons (Ken) · #**175** 27-09-2005, 11:16 PM

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.

ausastronomer (John Bambury) · #**176** 27-09-2005, 11:21 PM

Quote:

Originally Posted by cahullian

Gee do we all have to be so pedantic about this?.

Gazz

Gaz,

Stirring the pot and chewing the fat is 1/2 the fun.

CS-John B

iceman (Mike) · #**177** 28-09-2005, 12:03 AM

Ken,

Next quiz we'll make the question like those raffle tickets..

Quote:

Fill in the blanks..

I_EIN_PAC_

That way, everyone will get off their butt and enter!

slice of heaven · #**178** 28-09-2005, 07:04 AM

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.

Then why quote a source with out of date information that names SH 2-216 as the largest PN?

slice of heaven · #**179** 28-09-2005, 07:07 AM

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

I agree John
I was only replying to the statement Steve made.

slice of heaven · #**180** 28-09-2005, 07:24 AM

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

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.