Oh my god!!!! The Kraken! Markus Maximus, I love it!!!!!
Ann
Search found 13106 matches
- Tue Jun 01, 2010 5:17 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Bloop: A Mysterious Sound from... (2010 Apr 27)
- Replies: 35
- Views: 6288
- Tue Jun 01, 2010 5:10 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
But hah! Art! You have almost convinced me! Who would be the greatest ever authority on the color of the Sun, if not Shakespeare? I bow to your erudition and insight, if not to your sense of color, oh grand master of wisdom and blank verse! :owl: I think I do believe in you and Will, so the Sun must...
- Tue Jun 01, 2010 4:43 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
It isn't the intent of most scientific astronomical imagers to produce results that show some sort of actual color. The intent is to ascertain what makes up objects, and to see structure. Yes, it is obvious that that is the kind of astronomy that the Hubble telescope usually does. And I don't consi...
- Tue Jun 01, 2010 11:42 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
As blue as you think it should. What you see is not necessarily what other people see. What you term "true color" is true... to you. Point taken. But do you think, all things considered, that it is a good idea to show the overall stellar populations of NGC 3310 and M 104 as having the sam...
- Tue Jun 01, 2010 9:19 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: WISE: Heart and Soul Nebulas in Infrared (2010 Jun 01)
- Replies: 9
- Views: 2251
Re: APOD: WISE: Heart and Soul Nebulas in Infrared (2010 Jun
I've just been going on about how I need astro-images to show objects in "true color" for me to appreciate them. And, yeah, yeah, I know that infrared images just can't ever be "true color" (because they depict objects and structures that are colorless in themselves, stupid). Wel...
- Tue Jun 01, 2010 9:01 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
Maybe your "absolute color sense" makes it difficult for you to separate the two; perhaps this is analogous to someone's with perfect (or absolute) pitch being bothered when singing or playing (early music) at A415 Hz rather than the modern tuning of A440 Hz. Interesting. I think you are ...
- Tue Jun 01, 2010 5:37 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
Good question, Owlice. To be honest, I'm frustrated about the way that everything is "shifted to the red" in astronomy, and now I'm not talking about what we know as redshift! No, my problem is that blue stars like Vega are described as white (that's a shift to the red), white stars like t...
- Tue Jun 01, 2010 4:42 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
But as directly viewed from the ground, the Sun is perceptually yellow! You mean, when you stare at the Sun to ascertain its color? :shock: So all these images are actually correct, other than being too saturated. "Too saturated" is only their middle name. I, too, admit that the light of ...
- Tue Jun 01, 2010 4:02 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
Note, however, that Vegans can only see GREEN. Belatedly: :lol: :lol: :lol: Chris wrote: Sometimes G stars are called yellow stars. In terms of visual appearance, the Sun is white. In terms of stellar classification, it is yellow. Again, I don't see the problem. What's the problem, Chris? Well, the...
- Tue Jun 01, 2010 3:01 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Moons and Rings Before Saturn (2010 May 31)
- Replies: 22
- Views: 3876
Re: APOD: Moons and Rings Before Saturn (2010 May 31)
Pluto is a planet. Uh-uh, Chris! Are you one of those Harvard guys who get their news in a bottle? http://static-p3.fotolia.com/jpg/00/01/23/78/400_F_1237869_UEbL05TzDNFGnfXY4RyqDjFue18NO3.jpg These are the only ones of which The news has come to Ha'vard And there may be many others But they haven'...
- Tue Jun 01, 2010 2:41 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
So our plants would do even better with the violet-blue light of blue (not white) Vega, then?For example, in green plants, the action spectrum resembles the absorption spectrum for chlorophylls and carotenoids with peaks for violet-blue and red light.
Ann
- Mon May 31, 2010 5:35 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
As for Albireo, let me say that when I see that star I don't compare the color of the two components with each other, I compare the yellow component with other yellow stars that I see "in my mind's eye", and the blue component with other blue stars whose color I remember. That is why I was...
- Mon May 31, 2010 5:23 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
By the way, thank you for your Don Quixote and Seinfeld references. I'm not absolutely sure what they meant, but I always appreciate a chance to feel cuturally sophisticated. It so happens that I like Superman too, at least when he spends his days with Lois Lane. (Get that Tom Welling boy away from ...
- Mon May 31, 2010 4:59 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
And yet, I see the pair as strikingly colorful; I'd describe the yellow component as far more saturated than Arcturus, and the blue component as the most blue of any stars I observe. Yes, I realize that most people respond to Albireo the way you do, but I think I have a bit of an "absolute&quo...
- Mon May 31, 2010 3:47 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: Bystander's Finds #3: Which image would make the best APOD?
- Replies: 2
- Views: 878
PS: The most amazing image of Enceladus
Well, there was no way I could not vote for the galaxy group with that little blue rascal bursting with hot new stars and nebulae. I love that stuff, and it gets even better when those starburst galaxies are seen close to an old yellow elliptical. What a contrast. Wow. Okay, but even I have to admit...
- Mon May 31, 2010 3:18 pm
- Forum: The Communications Center: Breaking Science News
- Topic: Space: Why We Exist: Matter Wins Battle Over Antimatter
- Replies: 2
- Views: 654
Re: Space: Why We Exist: Matter Wins Battle Over Antimatter
I have read a bit of this before, but it is really interesting. Thanks for posting.
Ann
Ann
- Mon May 31, 2010 3:13 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
Chris wrote: But the apparent color of a star also depends heavily on the colors of reference stars around it. I don't agree. When I checked out the colors of stars, one of my biggest disappointments was Albireo. I had expected a vividly colorful binary made up of one brashly golden-orange primary a...
- Mon May 31, 2010 2:51 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
Well, hmmm. That "sex days" thing was a little funny, I'll grant you that. :oops: On the other hand: http://www.wikihow.com/Count-in-Swedish As for the colorful graph you posted, it could be that I'm all wrong, but it sure looks to me that even the graph admits that a star whose temperatur...
- Mon May 31, 2010 5:57 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
Again, the important point is that stellar colors are a measure of the emission peak, and not of the apparent color to the eye. Visually the Sun is white; spectrally it is yellow. There is no contradiction here. Are you sure that the Sun isn't green as defined from its spectral peak? I, at least, h...
- Mon May 31, 2010 5:16 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
And I still can't accept the claim that the color of the Sun is "yellowish white". I think it's a pure white, and there is a very simple explanation for its color. It's because our eyes are naturally adapted to seeing the brightest source of light as white, and the brightest source of ligh...
- Mon May 31, 2010 5:03 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
brown (color=#770000) actually is really pretty much purely red (color=#FF0000) with the intensity turned down. But brown color can also be a purely yellow color with the intensity turned down. http://upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Color_icon_brown.svg/300px-Color_icon_brown.svg....
- Mon May 31, 2010 4:48 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
You got me there, neufer. I'm a Swede, and in Sweden "six" (6) is written and pronounced "sex". No kidding. And I was in a hurry when I wrote that post, so I had no time to check it too closely.Sex days?
Ann
- Mon May 31, 2010 2:43 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
Yes, Bystander, I understand that. The point I have been trying to make the whole time is that the traditional Harvard color classification of spectral classes are really misclassifications. I was trying to see if I could get either of you to admit that. :wink: The way I see it, there is no way that...
- Mon May 31, 2010 2:22 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
I found a spectrum of Vega which clearly suggests that the peak output of light from Vega is square in the middle of the blue part of the spectrum, near 480 nm: http://zimmer.csufresno.edu/~fringwal/spectrum-vega-01s-plot.jpg The spectrum of the Sun peaks in the yellow-green part of the spectrum, no...
- Mon May 31, 2010 1:27 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Is the Sun yellow?
- Replies: 104
- Views: 31313
Re: Is the Sun yellow?
One more thing about the color of Vega. I think that people very often "see what they expect to see". If they are told by other people that stars are either white, yellow, orange or red, then those are the colors they are going to see when they look at the stars. That's why they may "...