Focal Reducer
How does the effect of reducing the focal length lens of a telescope and hence the magnitude of power?
I have a 16 "telescope with a focal length of 4064 mm. My computer is a 6.3. Now I know that I have a F10 and the train that was pulled down to f6.3 but what happens to the focal length telescope real. Hopefully someone out there can help. Hey guys the changes in apparent focal reducer of the telescope, but the point of view in the eyepiece, no matter what the "real" focal length - is a simple matter of physics that is just almost nothing to do with your comments or photo. Increased energy and reduces the focal length by a factor 63, and its light is increased accordingly, as if the telescope is "really" have been an F-6.3. So the focal length is 4064 * 0.63. I do not know if you ask any more than that, but in case you're wondering if there is a difference between "actual length, and calculates the focal length, I'd say If you have a catadioptric scope (Schmidt or Maksutov), no "real" focal length of your telescope. It sounds like perhaps you have a Schmidt can if you have 16 F-10 and a gear coupling 63? to Schmidt, the focal length of the primary mirror is actually more likd F-2, but the secondary mirror acts as a multiplier coordination leading to F-10. So we really could not argue with you because "fact" of having an F-2, but does not make sense because when you look through the eyepiece or take a picture, you get the equivalent of an F-10. So if you take a Schmidt with an F-2 primary, secondary coordination x5 multiplier and then add a decrease 63 x lens in the front, it is useless to discuss whether its scope is "really" an F-2 and F-10 or F-6.3. All that matters is the physics of light Ultimately, and that light behaves as it comes through an F-6.3, if that's all there is to worry.
Pentax K-7 with Celestron 9.25 and F6.3 focal reducer (1480mm F6.3) in 1536×1024 *** HD video mode
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