The original instrument to occupy the 25-foot diameter dome was the 10.5-inch Bausch refracting telescope (f/15.5) installed in the brand new observatory in 1953. Bausch & Lomb Company gave the ...

How much color should I be able to see in sky objects through a 10-inch telescope? Dennis Holt Concordia, Kansas Unfortunately, when you look at distant galaxies and nebulae, you won't see much ...

"Medium" telescopes have apertures from 4 to 10 inches. This category is the size most amateur astronomers use. One of the ...