ZWO Helical Focuser with T2 Thread

ZWO Helical Focuser with T2 Thread – Product description

ZWO Helical Focuser with T2 Thread belongs to the Focusers and Motorfocus range. Compact non-rotating helical focuser with T2 internal thread on the telescope side, 1.25-inch holder plus T2 external thread on the camera side and 6 mm fine-focus travel.

Key product details

• Off-axis guiders
• Guiding and planetary cameras
• Telescopes or camera lenses with coarse or missing fine focusing
• T2 M42x0.75 internal thread on telescope side
• 1.25-inch holder with T2 external thread on camera side
• Non-rotating focusing

Product overview

The ZWO helical focuser provides precise fine adjustment in a compact format. Attached equipment does not rotate while focusing, which is especially useful for cameras and guiding setups.

Suitable applications

• Off-axis guiders
• Guiding and planetary cameras
• Telescopes or camera lenses with coarse or missing fine focusing

Included equipment

• T2 M42x0.75 internal thread on telescope side
• 1.25-inch holder with T2 external thread on camera side
• Non-rotating focusing
• Minimum optical length approx. 48.5 mm
• 6 mm focus travel
• Scale for repeatable focus positions
• Locking screw

Consider backfocus

The focuser needs at least roughly 48.5 mm of optical path. With reducers, flatteners or OAG systems, include this in the backfocus calculation.

Practical note

Measure the available optical path before ordering. Precise focusing only helps if the camera can actually reach focus within the 6 mm adjustment range.

Selection note

Related products: Telescope mounts at Optikshop24 · Eyepieces at Optikshop24.