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Focal Length of Eyepiece 1 (mm): 40 mm
allowing you to start observing sooner
Whether you're a beginner
with worked examples from three popular software packages - Nebulosity
From there
Skywatcher Cheshire Collimator PRO SynScan Focal Length of Eyepiece 1For the alignment of newtonian telescope mirrors. With the help of this Cheshire type collimator you can easily align the optics of your reflector telescope. Just slide the collimator into the focus tube of your telescope and find out whether the mirrors are adjusted properly or not.
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