TS-Optics Concenter VISUS – collimate precisely despite wearing glasses

The TS-Optics Concenter VISUS has been specially designed for spectacle wearers and people with presbyopia (when not wearing glasses). The distance from the eye to the Concenter disk has been extended to the technical maximum, so that the circular disk can be perceived much more sharply. In addition, a rubber eyecup has been added. The eyecup can be raised when not wearing glasses or collapsed preventing your glasses from bumping into the eyepiece.

In addition to the features of the basic TS Concenter-2z and its suitability for eyeglasses, the TS-Optics Concenter VISUS includes a novel self-luminous function that makes the concentric circles glow in the dark. No batteries or other power sources are required. The lens side of the Concenter is simply held briefly under a blue or UV light source (white light), e.g. car interior lighting, flashlight or similar. The concentric rings on the disk will now be clearly visible for about 5 min, which greatly facilitates adjustment in the dark. External illumination with an astro lamp is also possible through a side opening.

Easy Newtonian collimation

The Concenter eyepiece consists of a closed cylinder, similar to a Cheshire eyepiece. The crucial difference is the inserted disk with concentric circles. With the Concenter VISUS the center of the primary and secondary mirrors is taken into account (without the need for a centre mark). Even the Newtonian offset is concidered. Also the adjustments are done with a fully illuminated focuser.

Collimation is acheived by aligning the edge of the mirrors so that an exact congruence of the optical light path is met. Now you can collimate more precisely than with a laser, above all you can be sure that not only the axis, but also the field is optimally adjusted.

With the TS-Optics Concenter VISUS, even beginners can achieve perfect collimation of their Newtonian telescope for visual observing and astrophotography.

Features include

Easy, quick and precise telescope adjustment
Fits into the 2″ receptacle of the focuser
With high-quality protective container
You 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, this is much more precise.
The offset is also taken into account.
Suitable for eyeglass wearers
Phosphorescent and also externally illuminable circles

Type:	Collimation eyepiece
Barrel size:	2″
Suitable for eyeglass wearers:	Yes
Circle illumination:	Phosphorescence and also external illumination

Concenter collimation eyepiece
Protective container

How to collimate your Newtonian with the Concenter collimation eyepiece:

If you hold the adjustment eyepiece in your hand, you will notice a transparent plastic disc with a central bore and concentric engraved circles inset on the telescope side at the lower end. At the other end you will find a central hole, which is chosen so small that the eye has no opportunity to avoid centering when looking through. After inserting the collimation eyepiece into the focuser you will see faint translucent rings in front of the optical components of the telescope.

Collimation of the secondary mirror to the focuser for optimum illumination

This step is made with covered primary mirror. Pay attention to a good illuimination when using the concenter eyepiece. Now the secondary mirror, a rectangular mounting of the focuser supposed, is adjusted so that it appears between the circles of the collimation circles and without offset. With the focus control of the focuser you can bring the outer edge of the secondary mirror and the matching circle to cover. Even small deviations from the ideal position are recognized immediately. By doing this, you place the secondary mirror in the optimal position to the focuser to millimetre accuracy. This step is necessary only once, you can remove the cover of the primary mirror afterwards.

Alignment of the secondary mirror to the main mirror

While looking into the eyepiece, the tilting is changed by means of the screws of the secondary mirror until the bright reflection of the primary mirror in the secondary mirror is concentric with the circles.

Alignment of the primary mirror to the optical axis

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

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TS-Optics Concenter VISUS Newtonian Collimation Eyepiece

SKU: TS-CONCENTER-VISUS

$255.00

2 in stock

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✅ Stocked in Melbourne, Australia

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