A simple mechanical element for spectacle shooting with Celestron telescopes of the SCT system equipped with a typical visual back 1.25 " .The spectacle projection method is based on the use of a telescope with an installed eyepiece The image formed behind the eyepiece is projected onto the camera sensor b ? CCD camera The method allows you to obtain a huge scale of the image which is useful when photographing the details of the surface of the moon, planets and using the appropriate filter in the photograph of the solar disk.
The extender is very easy to use. All you need to do is dismount the angle cap, put the eyepiece straight in the tube and put the teleextender on the visual back with the eyepiece. At the other end of this element there is a standard T-2 thread allowing to connect the T-Ring and DSLR. When using Teleextender, two things should be remembered: firstly, the scale obtained with this projection method is very large. Often the best results are achieved by using a long focal length eyepiece, such as a 25 mm eyepiece. Secondly, glasses with a relatively small diameter fit into the extender. It's best to use typical Plossl glasses or orthoscopic glasses. It should be remembered about the best possible balance of the telescope, limiting possible vibrations and about photographing in good looking conditions.
SEE ALSO: T2 rings