Zeiss telescope eyepiece 15mm focal lenght For Sale
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Zeiss telescope eyepiece 15mm focal lenght:
For sale a Zeiss eyepiece core mounted in 1.25" form.It is a 15mm focal lenght. No dust, no fugus, no scrathes on glass. There were used in pairs for stereo-view and this allowed fine adjustments for each eye. The small focusing mechanism is very heavy, being made from steel. Since you already have a focuser on the telescope there is no point in using it. So, I removed the core of the eyepiece and mounted in an aluminium barrel. The base have a standard 1.25" and is threaded for standard filters or barlow. It is multicoated. It was built in Germany in around 1980.
It is very well corrected optical because it was designed for measurements. I intentionally made the picture with computer screen so you can see the parallel pixel lines and columns, also colors.Both front and end lenses are concave.
If you need more info please ask.