Series 4000 Plössl 9mm Illuminated Reticle Eyepiece

Series 4000 Plössl 9mm illuminated reticle eyepiece is the most advanced commercially-available illuminated reticle eyepiece. This Series 4000 Plossl 9mm model includes micrometric x-y positioning controls which greatly facilitate locking onto the guide star: turn the finely-threaded controls and place the reticle's crossline pattern precisely at the desired position in the field. The sharp; high-power imaging of the 4-element; multi-coated Plossl optical system is complemented by a rubber eyecup (foldable for eyeglass wearers) that shuts out distracting stray light from the observer's eye. The upper (lens) section of the eyepiece rotates on a fine thread for precise diopter adjustment to the user's eye. Reticle pattern is a double crossline with two concentric circles.

The Series 4000 Plossl 9mm Wireless Illuminated Reticle Eyepiece includes a red LED illuminator; operated from internal batteries; with variable brightness control; batteries are included with each eyepiece.

This is a superbly engineered bit of kit ideal for many aplications: guiding long exposure astrophotography images; accurate polar alignment etc. These eyepieces retail for £149.99 at WE & £132.99 at TH.

To calculate the magnification this eyepiece will provide; simply take the focal length of the telescope  it is to be used with (in mm)and divide it by the focal length of the eyepiece; 9mm in this case.

eg. 1200mm FL telescope 133x magnification

1800mm FL telescope 200x magnification

If you need further advice on suitability; please contact us.

The eyepieces are brand new. We are UK based and this item will be shipped directly to you from our stock.  There are no additional duty or taxes to pay.