$4.99
Telescope Alignment Eyepiece
Brighter than any Cheshire eyepiece for 1/6-1/12 the cost!
A Must for Rich Field and Fast Newtonians & Dobsonians
Look Into Your Telescope Through an Aline and you see a bright white circle surrounding the image of your eye's pupil, making it easier to center the primary and secondary mirrors, which is especially important for aligning rich field and fast Newtonian and Dobsonian telescopes.
1000's of Alines are in use around the world (yes thousands) since Rigel Systems introduced the first retroreflector collimation eyepiece in 1995. Simple in design, Aline uses an ultra-reflective microprism retroreflector and the light gathered by your telescope to produce a brighter image than "classical" cheshires or even so called "reflective" cheshires (which are retroreflector collimation eyepieces -- not cheshires) that use less reflective microsphere retroreflectors.
We sell the Aline for $4.99, a fair price for a great product, 1/12th the price of the so called "reflective" cheshires! Use the money you save to buy one of our other fine products.
FAQ about Collimating a Newtonian telescope discusses
use of sight tubes (e.g., Aline) & laser collimators
telescope-collimation.html
LC125 for 1.25" diam
Free Aline
with every Laser Collimator!
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Laser Collimators Creator of the Teleport family of "telescoping" portable telescopes A laser collimator uses the principle of auto-collimation. From the center of the focuser, it sends a beam to the diagonal, on to the primary, back to the diagonal, then back to the focuser. When collimated, the beam hits the center of both mirrors and returns directly to its source. Teleport collimators feature nylon screws to reduce wobble in the draw tube, and an auto on/off switch which activates when the collimator is inserted into the eyepiece drawtube. Teleport collimators have a three-line and ring target face where the spot returns. It shows you which primary collimation bolt to turn, and in which direction, to center the spot reducing trial and error.
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