This high quality 9mm Plossl Illuminated Reticule Eyepiece is
ideal for use for guiding and aligning the telescope mount via the ‘drifting’
method that ensures accurate alignment. The Plossl eyepiece includes a
4-element, multi-coated optical system, dioptre adjustment, and double
cross-line/bull’s-eye type reticule.
The four thumb screws on the eyepiece allow you to relocate the cross-hair
in the field of view thus enabling you to drift-align on other stars within
the field of view without the need to re-align the mount itself when selecting
another star, something that is not desirable.
In addition two of the thumbscrews are spring loaded to facilitate quick and
accurate cross-hair adjustment, not found on cheaper alternative products.
Non-centrally obstructed double cross-line. Recommenced for astrophotography of