SVBONY SV197 Collimating Cheshire Eyepiece for Newtonian Reflector Telescope Bundle with SV121 Red Laser Collimator Adjustable 1.25 inch Collimation Eyepiece with 2 inches Adapter

SV197 cheshire collimating eyepiece can be inserted into 1.25 inch focusers or diagonals. How To Collimate Telescope With Cheshire Eyepiece: The view through the Cheshire eyepiece during the collimation will differ between telescopes. For fast telescopes (f5 and below), it will be little off-center, and for the slow telescopes (f5 and above), the view will be more centered and easier to collimate. 1.The goal here is to center the primary mirror reflection in the secondary mirror and reflection from the Cheshire with the secondary mirror. 2.To achieve that, you have to use the adjustment screws on the secondary and primary mirrors while looking through the Cheshire eyepiece collimator tool. Steel Crosshairs. The cross-hair adopts strong and durable steel wire instead of easily broken copper wire or aluminum wire. EVA lined packaging. Ensure transportation safety and easy storage. SV121 develops a new generation of adjustable module function technology, which can effectively solve the pain points of previous calibration eyepieces: solves different axis problems of calibration eyepieces. SV121 collimation eyepiece can be used for precisely collimating the Newtonian and Schmidt-Cassegrain reflector telescopes for crisp image quality. Aligning the mirrors seems easy enough, in theory, but in practice it can be difficult without the proper tools. Allows you to calibrate your telescope more conveniently. SV121 sturdy laser unit allows you to swiftly and precisely collimate your Newtonian telescope. Only when the optics have been accurately collimated can the telescope offer you its full performance. Note: If the product can be used normally, there is no need to calibrate by yourself.

• SV197 cheshire collimating eyepiece fits for Newtonian and SCT reflector telescopes; also useful for aligning refractor optics very accurately
• Peephole in top; The SV197 cheshire collimating eyepiece can directly see the result of the calibration
• Adjustable SV121 collimator; External effects of the product during transportation and use may cause off-axis problems;You can calibrate the coaxial problem yourself by giving away the standard hexagonal wrench
• High-end module design;The module adopts high-end spherical module, high sensitivity and easy adjustment; Adopts 3-piece glued optical glass lens for stable spotting better focusing effect and less halo; Make the spot shape is a dot instead of a grainy elliptical point
• Full metal structure;High-end atmosphere; CNC precision lathe machining of the laser unit has a front opening from which the laser beam can be emitted