Altair 60mm Straight Through Finder Scope with an indexed non-rotating, helical micro-focuser.
Focal length is 225mm (F3.75) which is perfect for autoguiding with small / medium refractors.
The focuser has a 1.25" ID push-fit adapter with brass compression ring, allowing use of auto-guiding cameras or 1.25" eyepieces.
The indexed focuser can be locked, enabling the eyepiece or camera to set at the correct focus-point.
Because the focuser does not rotate, the guide camera is easier to focus and maintain alignment on-target.
The rear of the focuser also includes a T2 thread to allow the addition of extensions.
Note: This is the optical tube-only for use with existing guide scope rings.
Fits guide scope rings product codes: SWGSR-110-200, SWGSR-110-MINI-LOS-CLAMP, GSR-LW100.