Under the same caliber, the price is more expensive than Newtonian or Cassegrain.
Under the same caliber, refracting telescopes are heavier, longer, and larger than Newtonian or Cassegrain.
Due to the limitation of the aperture, it is not suitable for observing deep sky celestial bodies such as extragalactic galaxies, nebulae, etc.
The disadvantage of larger focal length makes it difficult to use refracting telescopes to photograph deep sky celestial bodies.
In an achromatic design, the color of the resulting image will be more or less distorted.
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