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Re: Astronomy C

Posted: January 6th, 2013, 2:12 pm
by Orange714
I see with the information...but yes they may be different pictures but they seem to be all take in the same wavelength or the same type of composite? (Do I make any sense, I could be completely mistaken but it seems like they're all the same reddish orange color photo) Searching on google images and I only see maybe 3 or 4 different pictures of NGC 3582 and the rest are duplicates....or should I not search on google images

Sorry I'm pretty new to the event XD Thanks for the help in advance!

Re: Astronomy C

Posted: January 6th, 2013, 3:36 pm
by EastStroudsburg13
Keep in mind that for some of these images, there are only so many images that exist. Some of them are very far away and have only been captured by a few telescopes. So while some DSO's will have a lot of variety in terms of images and wavelength, others won't have as much. You might be able to find more variety here and there if you look at several pages of Google Images or different websites, but usually you'll find the major images on tests since most test writers aren't going to choose really obscure images.

Re: Astronomy C

Posted: January 6th, 2013, 7:16 pm
by Orange714
Oh that's true XD Thanks for the help though!

Re: Astronomy C

Posted: January 14th, 2013, 1:39 pm
by Orange714
Do you need to know the light curves of the different DSOs? If you do, do you just google? For most of them I found some pretty good websites but for a couple I couldn't find any and the ones I did find were kinda sketchy...
Also, could Astro maybe have a Question Marathon??? I don't know it's just suggestion....
Thanks!

Re: Astronomy C

Posted: January 14th, 2013, 2:54 pm
by syo_astro
Orange714 wrote:Do you need to know the light curves of the different DSOs? If you do, do you just google? For most of them I found some pretty good websites but for a couple I couldn't find any and the ones I did find were kinda sketchy...
Also, could Astro maybe have a Question Marathon??? I don't know it's just suggestion....
Thanks!
I think you'll definitely need to know the light curve of certain DSOs like Delta Cephei. But things like nebulae you wouldn't have to, though, maybe there could be some other graph for it (there's always more to astro!). I just generally use google, the only times I don't is when I get my hands on random books or articles, but that's unrelated.
As for the question marathon, could a mod perhaps answer that? I think you may have to PM one anyway. That does bring up an interesting idea actually, making a question marathon for every event.

Re: Astronomy C

Posted: January 14th, 2013, 3:42 pm
by fourLoko
As we start getting back from invitationals, maybe we could post the tests on the test exchange?

Re: Astronomy C

Posted: January 15th, 2013, 5:40 pm
by Orange714
I have the test from northmont and northview...who do I contact though?

Re: Astronomy C

Posted: January 15th, 2013, 6:00 pm
by SilverNight
Orange714 wrote:I have the test from northmont and northview...who do I contact though?
Just upload the test here: http://scioly.org/wiki/index.php/Special:Upload
And I (or someone) can add a link to it in the test exchange.

EDIT: Thanks! I added the test you uploaded to the Test Exchange.

Re: Astronomy C

Posted: January 16th, 2013, 1:31 pm
by astroblue
Could someone help explain the small-angle problem on the Northview Invitational? (The one with V838 Mon)
I don't really understand how they're getting a time of 2.8E7 seconds to calculate the distance...

Re: Astronomy C

Posted: January 16th, 2013, 4:20 pm
by AlphaTauri
So, the outburst began on Jan 6 and the image was taken on Dec 17 of the same year. They're approximating a bit and saying it took 11/12 of a year (though it's really a little more than that) for the light to travel that far outwards. So for a rough estimate, I know there are around 525,600 * 60 seconds in a year, multiply by 11/12 to get 2.89E7 seconds, which is pretty close to what they have.