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"you can buy a Canon T-ring which threads into your EOS lens opening, just like the base of a lens. Then you attach a T-adapter or the like(there are options) to the T-ring. The Camera and the adapters then attach to the back of the scope. Focus is achieved with the scope focuser. The scope becomes the lens so the focal ratio and focal length of the scope are what you have to work with. The slower ratio scopes have focal reducers available to help reduce the ratio to a more effecgtive speed. The refractor seen below uses a reducer that shortens the FL to 407mm and the ratio to f/4.5 which is relatively fast for night shooting. Scopes that r in the f/2 range are considered to be astrographs and get very pricey.
This is my Takahashi Sky 90 II with my DSLR attached. This is not the scope I used for the above images but it illustrates camera attachment."
Writen & picture by Nighthound
"you can buy a Canon T-ring which threads into your EOS lens opening, just like the base of a lens. Then you attach a T-adapter or the like(there are options) to the T-ring. The Camera and the adapters then attach to the back of the scope. Focus is achieved with the scope focuser. The scope becomes the lens so the focal ratio and focal length of the scope are what you have to work with. The slower ratio scopes have focal reducers available to help reduce the ratio to a more effecgtive speed. The refractor seen below uses a reducer that shortens the FL to 407mm and the ratio to f/4.5 which is relatively fast for night shooting. Scopes that r in the f/2 range are considered to be astrographs and get very pricey.
This is my Takahashi Sky 90 II with my DSLR attached. This is not the scope I used for the above images but it illustrates camera attachment."
Writen & picture by Nighthound
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