TS Concenter VISUS 2" - Adjustment eyepiece for Newtons, suitable for glasses

The alternative to the adjustment laser, Cheshire for perfect collimation of your Newtonian - an easy, quick and precise telescope adjustment!

Fits in the 2" socket of the eyepiece extension
With high-quality protective container
You can see immediately whether the telescope is perfectly collimated or not.
The adjustment is made via the edge of the mirror and not via a center mark, which is much more precise.
The offset is also taken into account.
Suitable for people who wear glasses (with larger secondary mirrors, the edges cannot be seen)
Luminous and externally illuminated circles

TS 2" Concenter VISUS - precise adjustment despite wearing glasses
We present the most advanced development in the Concenter series: the Concenter VISUS.

Specially developed for people who wear glasses and people with presbyopia (without using glasses), the VISUS offers the perfect option of looking through the Concenter adjustment eyepiece without hitting the eyepiece with your glasses or having difficulty finding the view. This is ensured by the rubber eyecup.

The distance from the eye to the Concenter disk has been increased to the technical maximum, so that the circular disk can now be seen much more clearly.

In addition to the suitability for glasses and the well-known features of the current TS Concenter-2z, a new self-illuminating function has been added so that the concentric circles glow homogeneously in the dark. Batteries or other power sources are not required for this. The disk side of the Concenter Ray is simply held briefly under a blue or UV-containing light source (white light), e.g. car interior lighting, flashlight or similar.

The concentric rings on the disk now glow clearly for around 5 minutes, which makes adjustment in the dark much easier. External illumination with an astro lamp is also possible through a side inlet.

TS Concenter - there is no easier way to adjust a Newton
The alternative to all adjustment devices on the market! Here, the center of the secondary mirror is finally perfectly adjusted (without prior marking) to the eyepiece extension with full illumination! The Newton offset is also taken into account. This means that even beginners can achieve perfect adjustment of their Newton telescope - even for astrophotography.

The Concenter eyepiece consists of a closed cylinder, similar to a Cheshire eyepiece. The key difference to a Cheshire is the recessed circular disk.

You do not need any center markings on the secondary mirror when adjusting. The adjustment is made directly over the edge of the mirror, so that the optical light surfaces are exactly the same, even taking the offset into account. You can adjust much more precisely here than with a laser, and above all you can be sure that not only the axis but also the field is optimally adjusted.

Instructions on how to collimate your Newton with the Concenter adjustment eyepiece:
If you hold the adjustment eyepiece in your hand, you will notice a transparent plastic disc with a central hole and concentric engraved circles embedded in the lower end of the telescope. At the other end you will find a central hole that is so small that the eye has no chance of avoiding centering when looking through it later. After inserting the adjustment eyepiece into the eyepiece extension, you will see matt translucent rings in front of the optical components of the telescope.
Adjusting the secondary mirror to the eyepiece extension for optimal illumination: This step is done with the main mirror covered. When using the Concenter eyepiece, make sure that there is good illumination. Now the secondary mirror can be adjusted, assuming that the eyepiece extension is mounted at a right angle, so that it is positioned by moving or twisting it so that it appears circular and without offset between the circles of the adjustment set. The focus control on the eyepiece extension can be used to align the outer edge of the secondary mirror and the appropriate circle. Even small deviations from the ideal position are immediately recognized. This allows you to bring the secondary mirror into the optimal position for the extension, accurate to the millimeter. This step is only necessary once, after which you can remove the cover of the main mirror.

Aligning the secondary mirror to the main mirror: Look through the small opening of the concenter and adjust the secondary mirror with the adjustment screws until the bright reflection of the main mirror is concentric with the circles.

Aligning the main mirror to the optical axis: Now bring the center mark of the main mirror exactly into the middle of the concentric circles using the adjustment screws on the main mirror cell. You will immediately see the slightest deviations. Your Newtonian telescope is then perfectly adjusted.

Design: Adjustment eyepiece
Insertion sleeve: 2"
Suitable for people who wear glasses: Yes (with larger secondary mirrors, the edges cannot be seen)
Circular illumination: Phosphorescence and external illumination

Concenter adjustment eyepiece
Protective container