ZWO 1.25" Helical Focuser (ZWO-HF1.25") Refractor Newton was able to increase

Newton was able to increase the aperture of his telescope while reducing the overall size of the tube

Tear out the protective film on adhesive tape

while keeping the eyecup securely attached to the eyepiece while folding it up or down

OPTICAL TUBE INFO: Optical Design: Newtonian Reflector Aperture: 150mm (6") Focal Length: 750mm (30") Focal Ratio: f/5 Focal Length of Eyepiece 1: 20mm (

ZWO 1.25" Helical Focuser (ZWO-HF1.25") Refractor Newton was able to increaseMakes a great fit together with ZWO OAG and ASI Mini Series Cameras. Can also be used for other purposes when an exact focus is required. This ZWO model doesn't rotate your camera when you are adjusting focus and it is super economical. Specifications Inner Diameter: 1. 25" Stroke: 6mm Adjustment Accuracy: 0. 1mm Top Male Thread: M42x0. 75 Bottom Female Thread M42x0. 75 Minimum Height: 48. 5mm Weight: 80 100g