SVBONY F9123A Laser Collimator for Newtonian and SCT Telescopes (1.25″ with 2″ Adapter)

Product Overview

The SVBONY F9123A is a red-laser collimator for aligning the mirrors of Newtonian and SCT reflector telescopes. It slides into a 1.25″ focuser like an eyepiece, and a removable 2″ adapter lets it sit square in a 2″ focuser. The laser runs at 635–655 nm with an output below 5 mW, has seven brightness levels, and projects its dot through a triple-cemented lens. The body is metal and it runs on the CR2032 lithium cell that comes in the box.

Who It's For

This is a good match if you own a Newtonian or SCT reflector and want a quick, repeatable way to bring the optics back into alignment after transport, a mirror cleaning, or a change in your imaging train. It suits visual observers and astrophotographers alike, since well-collimated optics benefit both.

Key Features & Design

• Seven brightness levels: turn the dot down for night-time collimation or up to see it clearly in daylight or under a lit garage.
• Triple-cemented lens: produces a stable, well-defined red dot on the primary mirror and on the collimator's own target.
• 1.25″ body with removable 2″ adapter: fits both common focuser sizes without a separate adapter purchase.
• Metal body: durable and keeps the laser seated squarely in the focuser.
• 635–655 nm, under 5 mW: a visible red wavelength suited to collimation work.

Recommended Uses

• Routine Newtonian collimation: align the secondary to centre the beam on the primary's centre mark, then adjust the primary to return the beam to the collimator's target.
• SCT checks: a quick reference on SCT reflectors, as listed by SVBONY.
• Field realignment: a fast check after transport to a dark site, before you start observing or imaging.

Compatibility and Accessory Notes

• Telescopes: SVBONY lists Newtonian and SCT reflectors.
• Focusers: fits 1.25″ focusers directly and 2″ focusers with the included removable adapter.
• Power: one CR2032 lithium cell, included.

What's in the Box

• Laser collimator
• Removable 2″ adapter
• Step-by-step instruction manual
• CR2032 lithium cell battery

Good to Know Before You Order

• Reflectors only: it is intended for Newtonian and SCT reflectors; refractors are not collimated this way.
• Laser product: the beam is never pointed at the eye or at the sky, and the collimator is used with the telescope pointed at a safe horizontal or downward angle.
• Weight: SVBONY does not publish a weight for this item.

Frequently Asked Questions

Is it difficult to set up?

No. Insert it in the focuser like an eyepiece, switch it on, choose a brightness level, and follow the included step-by-step manual for adjusting the secondary and primary mirrors.

Does it fit a 2″ focuser?

Yes. The removable 2″ adapter is included, so it fits 1.25″ and 2″ focusers.

What battery does it use?

A CR2032 lithium cell, which is supplied.

Can I use it in daylight?

Yes. The seven brightness levels let you raise the output so the dot stays visible in daylight or a lit room, and lower it at night.

Bottom Line

In short: a metal-bodied 1.25″ red laser collimator with a 2″ adapter, seven brightness levels and a triple-cemented lens, for quick mirror alignment on Newtonian and SCT reflectors.