In the case that this article currently is not available from the warehouse, please note the following: we order from this supplier in regular intervals. Please place your order now, so that we may take into account your order and deliver the article to you by the above-mentioned date. If you need the article earlier, we can rush it for you for an additional price. In this case, please contact our customer service department.
The SWAN 2", 33mm eyepiece from William Optics is a very high quality wide angle eyepiece. With a 72° field of view, it offers a vast panorama for observing extended deep sky objects for example.
The lens surfaces are all multi-coated (FMC coating), offering high light transmission. The eyepiece gives high image quality with equally good contrast. The anti-reflective black coating is an additional plus.
The eyepiece has no problems when used with fast telescopes and is excellent from f5 up. The rubber eyecups can be folded down and the specially roughened surface of the eyepiece provides a secure grip.
It has a very comfortable-to-use 25mm of eye relief.
According to the manufacturer's specifications, the five elements in the eyepiece are arranged in four groups.
These Williams eyepieces are built to be parfocal with each other. That means they do not have to be refocused when switching from one eyepiece to another.