ZWO 1.25" Helical Focuser (ZWO-HF1.25") Refractor Fits all standard filter threads

Fits all standard filter threads and can be combined with other filters – e

synthetic rubber-armored

Tear out the protective film on adhesive tape

Nagler Type 6

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 Fits all standard filter threadsMakes 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