Celestron Schmidt Cassegrain Reducer / Corrector - 0.63x polar wedge such as the Ring or

such as the Ring or Orion nebula

Specs: Length: 120mm

Tripod Weight: 4

most importantly

The lens group comprises four elements and uses rare-earth elements

Celestron Schmidt Cassegrain Reducer / Corrector - 0.63x polar wedge such as the Ring orThis lens focal reducer shortens the focal length of Schmidt Cassegrain telescopes by a factor of 0. 63. The f ratio changes by the same amount, from 1: 10 to 1: 6. 3. This results in a significantly larger field of view and exposure times that are three times shorter than without the reducer. The optical correction system of this Reducer Corrector flattens the slightly curved field of view of all Schmidt Cassegrain telescopes, providing a fully