Recent content by sravet

It's a science report, not really a science fair, so lighter weight. I didn't know the above were prerequisites for the questions I posted, but to answer them, the thesis is to design and build a telescope that equals or betters what Galileo used to observe the solar system. Together we are...

Hey that's a great idea, explaining why it doesn't focus as well and using the colored foil. We aren't planning on any zoom, just two fixed lenses. The experiment in his book showed two convex lenses mounted with clay to a yardstick, with the smaller eyepiece lens placed just behind the focal...

I am helping my son design and build a refractor telescope for a science fair project (8th grade). He has read some on lens types and focal lengths. We also read that Galileo's most powerful telescope was 33x, and was able to view Saturn's rings and Jupiter's planets. We want to be able to do...