Anyone have any ideas on how to create a good absorption line spectrum? In the past I've tried a light bulb+bottle of windex (very faint absorption lines are...
... I've used a solution of Erbium Chloride that was sitting around at SCSU, works really well, but I have been unable to reproduce it since moving here. I...
There's a toy called a "Glo-Doodler" available from AreYouGame.com for a few dollars. It's made by Colorforms and is like a "magic slate" - write on the...
I have heard, but not tried, a REVEIL brand light bulb. ? ... Dennis Erickson WA9FBC Astronomy/Physics Teacher The Latin School of Chicago 312 582 6435...
Elisha, Does it have to be an atomic absorption spectra, or can it be molecular? Liam McDaid Astronomy Coordinator & Professor of Astronomy Sacramento City...
Sunlit clouds can give a nice absorption spectrum, esp. if you have handheld spectroscopes-- the aim isn't that critical. Hope this helps! Alex Storrs Dept. of...
Hi Elisha -- None of what I describe has actual atomic absorption lines, but it is possible to make narrow absorption bands that can be projected using an ...
Anne G. Young
agysps@...
Sep 5, 2007 8:58 pm
1593
I've done a few "broad band" absorption demos, like the container of Windex. But I find that when I use broad band absorption demos the students get it ...
I have gotten good results using sunlight (don't look at the sun, of course). Using a STAR spectroscope, just have the students look at the sky (or a cloud,...
I bought a bunch of little colored plastic boxes from TAP plastic (a local chain). They are comparatively cheap and dark color. I give the students their own...
I use a piece of pink plastic from a kids toy called the mini glo-doodler by Colorforms (you can find it online). It absorbs light in the yellow very well. ...
The handheld spectrometers I have are the black ones from "Science Kit & Boreal Laboratories" that are in the Edmund Scientific catalog. They do not have the...
Here's an old recipe for cheap and easy absorption line spectra that I learned from Anne Young many years ago: Take the insides out of water-soluble...
Hello, I am trying to create color images from original ccd filterd images. I am doing this with a group of high school students. Does anyone know of a...
I believe what you want is ImageJ, which you can get from http://rsb.info.nih.gov/ij/ This is a wonderful program, free, and easy to learn and use. Steve Shawl...
Milton, You might try JImage (which is an upgrade of NIH Image). It is free and can handle FITS format if I remeber correctly. Andrew Vanture Everett Community...
Hi Milton! Please give us some additional details, I'm not exactly sure what you're asking about: Do you mean you want to create "true color" images, or just ...
rkang@...
Sep 7, 2007 6:05 pm
1603
What format are your images? If they are fts, we have some in-house software that might be of use to you. Otherwise, try the Sky Image Package at Virginia...
I wonder if you put the material you wanted to create the absorption lines into solution and then allowed the vapors to be drawn up through a Meker burner. By...
Do a Google search for 'The GIMP', its like Adobe Photoshop except it 's free. I believe it only works on 8-bit digital images. smhsfyzix <smhsfyzix@...>...
NIH Image will do it. or Image J or Scion image Dennis Erickson WA9FBC ___________________ Chicago Sidewalk Astronomy Club Latin School Sidewalk Astronomy...
Thanks to everyone for all the advice. Many of you recommended ImageJ. Actually, I already have that program, but didn't know it could do this. After a...
Its also very easy to do with ds9 which is freely available for both windows and linux. See the following url about "Creating an RGB Frame in ds9"" ...
Juan, Your problem rang a bell in my memory. I have seen a very good absorption line (band really) in an alcohol solution of Chlorophyl. You simply need to...
Hi, everyone- I'm currently working on a book: "Seven Wonders of the Universe (that you probably take for granted)." At this point, it's in the larval stage,...
Renee, Something that I took for granted (until I started teaching astronomy) is the "cosmic" coincidence that our moon and our star have almost exactly the...
jfuller@...
Sep 14, 2007 2:01 pm
1612
I've always thought total solar eclipses were pretty amazing. They reflect not just a perfect geometry (the similar apparent sizes of the sun and moon) but the...
I think it's amazing that we know such an enormous amount about the Universe simply from studying the light things give off. Liam McDaid Astronomy Coordinator...
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