For guider scope or finder scope interface; solution for telescopes or telephoto lenses with sluggish focusing; fixed orientation so no rotation of mounted cameras or eyepieces or field of view with guide star when focusing
Upgrade your R and P focuser by adding it to the end of the R and P focuser by using "Astromania M42X0.75 Female to M42X0.75 Female Thread Telescope Adapter - 9mm"; note: please make sure that there is M42X0.75 male thread on your R and P focuser
Interface: 1.25 inch with M42X0.75 male thread; primary Mirror Interfaces: M31X0.5/M42X0.75; accuracy 0.05mm; Focusing stroke: 10mm; Minimum length: 46mm; Longest length: 56mm
ED Element High-contrast Optics: The first time you observe an object through one of these eyepieces; you will almost certainly be struck by the brilliance clarity and depth of colour in the image
Long Eye Relief Comfortable Observing: The very generous 20 mm of eye relief means your observing is always completely comfortable for all the focal lengths available in this eyepiece series