How do you find the focal length of a reducer?
If you have a 0.71x focal length reducer, you simply multiply the focal length of the lens by 0.71. E.g. 50 mm lens on 0.71x reducer = 35.5 mm lens.
How does a focal reducer affect focal length?
This also decreases the effective focal ratio of the instrument. The focal reducer’s power is also affected by the distance between the reducer lens and the focal plane — shorter distance results in a longer focal length, while longer distance results in a shorter focal length.
Does a field flattener reducer focal length?
Field Flatteners And Reducers Some flatteners are also reducers: this means that while they correct the field curvature, they also reduce the focal length of the telescope.
Why the Celestron reducer/corrector?
This, added to the inability to utilize longer focal ratios for certain objects, led Celestron to design the four-element, fully multicoated f/6.3 Reducer/Corrector. Results are amazing both visually and photographically.
What is the effective focal length of a Celestron SCT with reducer?
I recently purchased a 6″ SCT and a Celestron F/6.3 Focal Reducer. The focal length of the SCT is 1500mm without the reducer. The reducer obviously lowers the effective focal length, as it should, but I’ve noticed that the amount of reduction is dependent on the spacing from the reducer.
What is the focal reducer and field corrector lens accessory?
This combination focal reducer and field corrector lens accessory works with all Celestron 5″, 6″, 8″, 9 1/4″, 11″ and 14″ Schmidt-Cassegrain telescopes This clever accessory makes it possible to have a dual focal ratio instrument, without sacrificing image quality
What is the best focal reducer for a Schmidt Cassegrain telescope?
Reducer/Corrector f/6.3. This combination focal reducer and field corrector lens accessory works with all Celestron 5″, 6″, 8″, 9 1/4″, 11″ and 14″ Schmidt-Cassegrain telescopes. This clever accessory makes it possible to have a dual focal ratio instrument, without sacrificing image quality.
