2006-11-18 12:12:08 · 5 answers · asked by MARTHA A 1 in Science & Mathematics ➔ Astronomy & Space
Newtonian reflectors are difficult to use for terrestrial observation because the image is inverted. Cassegrain-type reflectors (Schmidt-Cassegrain, Maksutov-Cassegrain, etc.) can be used with erecting prisms, or with a star diagonal if you're willing to put up with a mirror image view. The main problem with the Cassegranian reflectors is that their focal lengths are usually so long that you can't go lower than 40 or 50 power with them. Terrestrial spotting scopes are most often used in the 20x to 40x range.
2006-11-18 14:25:53 · answer #1 · answered by injanier 7 · 0⤊ 1⤋
They are excellent for this purpose. Meade and other manufacturers sell several models of "terrestrial" reflectors, and their quality is just as good as any refractor. usually ther are "Mak's", but Schmitt-Cass's work just as well. I have a $5000
SC that I use for astronomy, but I can easily read a newspaper at
400 yards with crystal clarity
2006-11-18 13:23:05 · answer #2 · answered by lampoilman 5 · 0⤊ 0⤋
Yes but the focal length on many of them would make it like viewing small portions of them unless they were far away.
2006-11-18 12:17:18 · answer #3 · answered by Frust Parent 3 · 0⤊ 0⤋
You can but the clarity wont be as good as a refractor.
2006-11-18 12:16:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Sure
2006-11-18 12:40:19 · answer #5 · answered by Qyn 5 · 0⤊ 0⤋