2.5x Televue Powermate
In superb condition, no markings on body or glass.
It is a 1.25" barrel and has a brass compression ring to prevent marking eyepieces. It is supplied with the original caps and box, there is even the paperwork. The Powermate is made in Japan and is of very solid, all metal construction in the body.
The Powermate does not act like an ordinary Barlow lens, there is no loss of field of view, no vignetting and the views are crystal clear. The Powermate is not a Barlow, it is far superior.
Search the web and you will find numerous positive reviews for the Powermate.
If you are an astrophotographer, the Powermate effectively increases the focal length of your scope by a factor of 2.5, an f/5 becomes f/12.5, f/8 becomes f/20 and f/10 becomes f/25.
The reason I am selling is that I no longer take photographs, I am a visual observer and I have the range of eyepieces in my case that is what I need.