TS Optics 2" Extension tube - 35mm Thermoelectric Cooling The polar finder scope has

The polar finder scope has a variable illuminated reticle with an automatic power-off function

The base of the Telrad viewfinder is self-adhesive and can be mounted on most telescopic tubes from about 10cm diameter upwards

No IR cut filter installed

The large diffusing lens results in a very large and evenly illuminated light cone

TS Optics 2" Extension tube - 35mm Thermoelectric Cooling The polar finder scope hasExtension tube for 2" receptacles 35mm long. This extension tube is the ideal solution if the focal point is too far away from the focuser. In many cases, it also allows the use of a camera with a telescope for photography. This extension bridges 35mm optical path. So the focuser does not have to be screwed out to the hard stop and so the mechanical stability is increased. In the calculation of the optical length, the 2" barrel is not taken into