Kendrick Laser Collimators
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A laser collimator is by far the easiest technique and tool to collimate a telescope. Once understood (and it is easy to understand) it will take no more than a few tweaks of your telescopes collimating screws to have your telescope operating at its maximum.Kendrick makes collimators that can be used with Newtonian (Dobs too), Maksutov Newtonian and Schmidt Newtonian telescopes, Schmidt Cassegrain & Ritchey Cassegrain telescopes. Our collimators come in two sizes. 2" and 1.25". Our standard lasers (#2062 and #2063) have a 45 degree face so that they extend out from the bottom of all but the longest focusers (Newtonian). This allows the collimator face to be easily viewed, providing your Newtonian or Dob is a truss tube design, from the bottom of your scope when adjusting the collimation screws,. For SCT owners, the 45 degree face on the 2064 and 2065 collimators give you a clear view of the collimator from the supplied adaptor. Instructions are included with all the collimators we sell. Kendrick uses a class IIIA laser diode in our collimators. They are 650 nm laser diodes of less than 5 milliwatts. It is considered safe for consumer use, but you should avoid letting the beam enter your eye, directly or after reflection from a mirror. It is OKAY to look at the scattered light from the red spots where the beam hits the mirrors. The collimators take two AAA batteries (included). There is a one year warranty for defects in materials and workmanship in our collimators. Barlowed Collimation These lasers and the collimation process are based on a concept introduced by Nils Olof Carlin in an article he wrote for Sky & Telescope magazine in January 2003. Our barlowed lasers achieve the accuracy of Cheshire sight tube collimation with the ease and simplicity of a laser collimator! Standard lasers are subject to minor centering errors on the primary mirror that can be difficult to detect. These minor errors are not much of an issue with longer Focal length telescopes (F5+) but in today's fast scopes (-F5) this error can make a substantial difference in tack sharp collimation. When using a barlowed laser, it is possible to correct for .5+mm centering errors that make all the difference to achieving superb collimation in a fast scope. Be aware that to achieve truly tack sharp on any Newtonian type telescope the light path will need to be "closed" using an auto -collimator. This is discussed in the collimation instructions. Kendrick does not offer an auto-collimator at this time. LASER RECOMMENDATIONS The lasers are available in 1.25" and 2" sizes and are also available for closed and open tube designs telescopes. Although not fully necessary, those who have closed tubes should consider the 2068-A or 2069-A collimators as they come with an adapter that will put the laser outside of the focuser. The face of the laser is visible through the cut-out on the side of the included adapter, making it much easier to collimate the telescope when adjusting the primary mirror collimation screws. For those with an open tube or truss tube design telescope the 2068 (for 1.25" focusers) and 2069 (for 2" focusers) lasers will be adequate. For anyone who has more than one scope but has 1.25" and 2" focusers, we recommend the 2069 laser with the 2060 adapter. This will allow you to adapt the laser from a 1.25" format to a 2" format. If one or both of the scopes are closed tubes then you should purchase either the 2068-B or 2069-B Laser/focuser adapter, depending on which telescope has the closed tube and what size focuser it has. For those who already own a laser and a barlow, a 1.25" or 2" mask may be purchased that can be threaded onto the front of your barlow. The mask provides an exit aperture for the laser beam to exit, for collimation purposes, but provides a flat surface to collimate the reflection of the gummed paper ring from your primary mirror against. (see items #125-BLM and 2-BLM)