1.25" collimating eyepiece TS for newtonian telescopes

CONCENTRATOR TS 1.25": you can't adjust a newtonian more easily
The alternative to all collimation tools on the market! Now the center of the secondary is being taken into account (no mark in the center). The adjustment is done with the focuser fully illuminated. Even the Newtonian shift is considered. Now, even beginners achieve a perfect collimation of their Newtonian telescope, even for astrophotography.

The Concenter eyepiece consists of a closed cylinder, similar to a Cheshire eyepiece. The crucial difference is the inserted disk.

It does not need a center mark on the secondary mirror for collimation. The collimation is performed directly through the edge of the mirror so that an exact congruence of the optical luminous areas is achieved, even with respect to the offset. Now you collimate much more precisely than with a laser and, above all, you can be sure that not only the axis but also the field is optimally adjusted.

A manual for collimating your newtonian with the Concenter collimating eyepiece:
If you hold the adjustment eyepiece in your hand, you will notice a clear plastic disk with a central hole and concentric engraved circles inserted into the side of the telescope at the lower end. At the other end you will find a central hole, which is chosen so small that the eye has no chance to avoid focusing when looking through. After inserting the collimating eyepiece into the focuser, you will see faint translucent rings in front of the optical components of the telescope.

Collimating the secondary mirror to the focuser for optimum illumination
This step is done with primary mirror covered. Pay attention to good illumination when using the eyepiece concentrator. Now the secondary mirror, a so-called rectangular mount of the focuser, is adjusted so that it appeared between the circles of the collimation cycles and without displacement. With the focuser focus control, you can cover the outer edge of the secondary mirror and the corresponding circle. Even small deviations from the ideal position are immediately recognized. In doing so, you place the secondary mirror in the optimum position for the focuser with millimeter precision. This step is necessary only once, then you can remove the primary mirror cover.

♦ Aligning the secondary mirror to the primary mirror
While looking through the eyepiece, change the inclination by means of the secondary mirror screws until the bright reflection of the primary mirror in the secondary mirror is concentric with the circles.

♦ Aligning the primary mirror to the optical axis
Shift the center mark of the primary mirror exactly in the center of the concentric circles using the primary mirror cell adjustment screws. You will notice even the slightest deviation. After this, your Newtonian telescope will be perfectly collimated.

Type: collimating eyepiece
Barrel size: 1.25"

Concentrator collimating eyepiece
♦ Protective container