Secondary upgrade for 254mm Newt

[Manav]

Hi,

Will Cats Eye collimation kit identify if the secondary mirror is aligned center of the secondary holder?

Silly question but having upgraded to 70mm secondary I think my new mirror is sitting much lower than into the tube.

Regards

[Logieberra]

Do you have the Catseye sight tube? Bring your focuser in / out until you seen the annulus gap between the reflected round mirror surface of the secondary, and the inside circle of the sight tube...