It is the best way to buy and sell used astronomy stuff around with 7, to 8, hits a week on the web pages. A few people have reported using University Optics, and all report receiving good service. Patterns in the sky: Any good pair of 7-power binoculars, when held steadily or mounted on a tripod will give you a glimpse of the craters of the moon, the crescent of Venus and the moons of Jupiter. This is the size of the lens or mirror that focuses the light from distant objects. It is a 70mm f6. Of course, there are good telescopes which cost less, but for the best mechanical quality and optimal performance, you should expect to pay a little more.
Similar to the Muksutov, but instead of the correction lens there's a Schmidt corrector plate to correct the aberration.
Web Wisdom: Telescope Buying Guides and Reviews
They are so bad they make Tasco junk look good! Lots of money into accesories, collimation tools, etc 10 times what the scope was worth. I want to take astrophotos — what do I need? We built a sun funnel for it and show all the kids in the neighborhood the sunspots. Takahashi makes some of the finest APO refractors in the world.