A Colorful Landscape
The use of filters can be very helpful to scientists. When we use the correct filter we can enhance a particular feature and mute the others. Sometimes this makes the feature we are interested in easier to study.
When you observe an object through a filter you must remember that you are not seeing all the information. When you look at the landscape above with a red filter you are lead to believe that there is only one kind of tree on this hillside. When you use a yellow filter you also think there is only one kind of tree, but it is a differet kind. If you want to understand the entire landscape you must remember to include the information you gather from each filtered image.
Now that you understand a little bit about how filters work, let's make a filter wheel and use it to view the Crab Nebula!
