Hotech SCA Laser Collimator 1.25 inch - with aiming screen

Hotech SCA Laser Collimator 1.25 inch with target screen: collimating from a reliable starting point

If stars remain blurry while the sky is clear, then collimation is the first suspect. The Hotech SCA laser collimator aligns the mirrors of your Newtonian telescope quickly and reliably, with a principal advantage over standard laser collimators: the patented SCA system (Self-Centering Adapter).

This version combines the point laser with a target screen on the collimator itself: the returned laser lands on the screen, allowing you to see the return of the beam without having to look under the telescope.

Why SCA Makes a Difference

A standard laser collimator is secured with a set screw, causing it to tilt minimally in the focuser. This means the laser itself is already misaligned, and you are collating to an incorrect starting point. The SCA adapter secures the collimator with an expanding rubber ring, centering it precisely and perpendicularly. What you align afterward is truly accurate.

That's how it works

Place the collimator in the focuser, point the laser dot via the secondary mirror to the center of the primary mirror, and then adjust the primary mirror until the beam returns onto itself. The entire process takes a few minutes after some practice and can be repeated each session.

Solidly executed

The laser is calibrated, the housing is made of metal and the bright red dot is also clearly visible on the mirror marking in the dark.

Featured accessories

A laser collimator is the first accessory for every Newtonian: collimation directly determines sharpness. Combine with stronger mirror springs for an adjustment that also stays put.

For whom yes and for whom no

• ✓ Newton and Dobson owners who want to collimate quickly and repeatably
• ✓ As before, I had a cheap laser collimator that hung crookedly in the focuser itself
• ✗ Refractor and Maksutov owners: those telescopes rarely, if ever, need to be collimated

Specifications

You can find more accessories for this merk at the Hotech merk Page.