Astronomy and telescope making. Have made at least seven telescopes, both refractors and reflectors, and have spent 30 years looking at the nighttime sky.
|James||03/26/17||10||10||10||That's depressing. I wish anything I owned .....|
|Prashant S Akerkar||09/01/16||10||10||10||Dear Paul Thanks. Prashant|
Hi James It was Sir Isaac Newton who first came up with this idea. Instead of using a lens, he used a concave mirror that collected light and brought it to a focus---like a shaving mirror. Just about
Hi James Most amateur telescope makers choose to make reflecting telescopes, using mirrors rather than lenses. The process is the same: you grind the glass to shape using varying sizes of grit, then
Hi James This is not an easy question to answer. You are correct, that there are few moving parts and little wear and tear on most telescopes--so you'd think they would have a high resale value. But
Hi James The views you get from a telescope depend on two things:. Light gathering (how big the lens or mirror is) and magnification. If you want to see details on the planets, the best ones to look
Hi Prashant There certainly is! Astronomers suggest that there are frequent rainstorms on Venus (albeit with sulfuric acid laced liquid, rather than water) and there is clear evidence of rain in ages