Takahashi Collimating Telescope for RC, Cassegrain, Dall-Kirkham Telescopes
With this adjustment telescope, you can collimate your telescope perfectly within a few minutes. Collimation is made using several circles which are consecutively centered. In this process, secondary and primary mirror can easily be identified, so you turn the right screws from the beginning.
The collimating telescope is suitable for all Cassegrain telescopes and their derivatives. Prerequisite is a central mark on the secondary mirror.
- Ritchey-Chrétien (RC) telescopes
- Dall-Kirkham telescopes
- Cassegrain telescopes
- Schmidt-Cassegrain telescopes (after putting a central mark on the secondary mirror)
The principle of the Takahashi collimating telescope:
The principle is simple, but ingenious. It is a small telescope with 6x magnification. By using a sliding eyepiece, the single elements in the telescope are consecutively focused. Due to 6x magnification, you can achieve the accuracy which is necessary for a good final result.
The reflex itself is generated by lateral incidence of light and a pierced tilted mirror, similar to a Cheshire. With the diffusing screen, an even illumination is achived, so you can see the rings much easier.
A good achromatic 30 mm objective is placed behind the mirror. Objective and eyepiece provide a good view and ensure quick results.
The telescope has an M36.4 thread at the telescope side. With the two optional adapters (see recommended accessories) you can adapt to 2" and thus attach the collimating telescope directly to the 2" receptacle of your focuser.
