What are some of the disadvantages of refractor telescopes?

The first telescopes built were refractors. ... After the initial alignment, their optical system is more resistant to misalignment than the reflector telescopes. ... read more

The biggest disadvantage is cost. A good refractor of a given aperture is about 10X of what a catadioptric cost. For a 150mm OTA APO refractor is about $6,500, a 150mm Catadioptric OTA about $450. Above 150mm the discrepancy is more pronounced. Personally I would take a 150mm refractor over a 300mm Cat. read more

The telescope is an instrument used to see the objects that are far away ,They are used to view the planets and the stars, Some of the same optical technology that is used in the telescopes is also used to make the binoculars and the cameras. read more

Refracting Telescopes. A refracting telescope is the simplest type of telescope and probably the most recognizable. It’s design is so simple, that it is essentially a tube with a lens at each end. How Refracting Telescopes Work. How refracting telescopes work, is actually very simple. Light enters through a main objective lens at one end (1). read more