Celestron C14 (non-EDGE version) and focal reducer for DSO imaging

[jambouk]

The standard Celestron 0.63x reducer screws inside the Moonlite Crayford focuser, near the visual back. But has anyone used the reducer the other side of the Crayford, away from the telescope, but still still preserving the 105-110mm spacing to the sensor?

Reason being is to be able to switch between visual and imaging without having to remove the Crayford.

Thanks

James

[michael8554]

Between the Moonlite and the camera is the only correct position for the FR, so that the Back Focus doesn't change when you alter the Moonlite focus.

Leave the Moonlite on the scope to focus your visual setup.

Michael

[jambouk]

Thanks Michael. The FR screws inside the Moonlite at the visual back side, but screws onto the focus tube which moves, so it preserves the distance between the FR and the camera; as you use the Moonlite the camera moves away from the telescope but so does the FR inside the Moonlite to the same proportion. 
 

I’d like to know if others have used the FR much further away from the visual back. Have you achieved this as you describe?

James

[michael8554]

A clever design.

Reminds me of the mod to Meade/Celestron FRs, that allowed them to be mounted inside the focuser, which shortened the rear overhang.

Michael