AstroSystems - LightPipe/Sight Tube Combination - 2 inch

w/instructions

This unique and innovative collimator combines the LightPipe with the SightTube into one easier to use, lower-cost tool.  The
LightPipe functions just like a Cheshire collimator, but with two important differences.  First, the acrylic lightpipe will not
darken or corrode with time, like the aluminum reflector used on a Cheshire.  Second, the lightpipe is non-directional to
illuminate.  When using a flashlight at night to illuminate the tool, any angle works, unlike the temperamental Cheshire.  The
2-in-1 collimator accurately aligns optics in Newtonian telescopes (LightPipe) as well as accurately aligning the secondary mirror
under the focuser (SightTube).  The 2" version is easier to use in telescopes having a long focal length of  (70"+) and larger
proportional secondary mirrors such as those in short f/ratio telescopes (f/3.5-f/4.5) or imaging telescopes. Save time and money
with this 2 in 1 tool.  Precision-made anodized aluminum, acrylic insert and stainless steel crosshair wires.  Includes 14 page
instruction booklet.