Abstract: A telescope made up of mutually connectable modules, which telescope comprises at least a lens module and an eyepiece module, and the lens module and eyepiece module each have a connection interface for connecting the modules, and at least one adjusting means for focusing and at least one adjusting means for changing the image magnification are provided, and one of the adjusting means is disposed on the lens module in the region of the connection interface of the lens module and the other one of the adjusting means is disposed on the eyepiece module in the region of the connection interface (5) of the eyepiece module.

Abstract: Tie invention relates to a telescope (1) comprising an objective lens (2), an eye-piece (3) and a prism reversing system (4) and having projection optics (21) with an optical path for reproducing an image of a reticle in a focal plane of the eye-piece (3), the optical path of the projection optics (21) being coupled into the observation beam path by means of a beam splitter, and the projection optics (21) comprise a mask (22) and a light source (23) disposed so as to illuminate the mask (22) from behind.

Abstract: The invention relates to an adapter sleeve for fastening an accessory, such as a fixture for an optical recording or measuring device, to an eyepiece portion of an observation telescope. The adapter sleeve has a basic body that centers the adapter sleeve on the eyepiece portion, an attachment portion that fastens the accessory to the adapter sleeve, and a fixing device that locks the adapter sleeve at the eyepiece portion. Likewise, the present invention relates to different fixtures for attaching an optical recording or measuring device to the eyepiece portion of an observation telescope. This provides both an adapter sleeve and a fixture that meets increased positioning accuracy requirements, while being adjustable to fit the needs of different observation telescopes and optical recording or measuring devices.

Abstract: A telescope made up of mutually connectable modules, which telescope comprises at least a lens module and an eyepiece module, and the lens module and eyepiece module each have a connection interface for connecting the modules, and at least one adjusting means for focusing and at least one adjusting means for changing the image magnification are provided, and one of the adjusting means is disposed on the lens module in the region of the connection interface of the lens module and the other one of the adjusting means is disposed on the eyepiece module in the region of the connection interface (5) of the eyepiece module.