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Farpoint 2" Autocollimator for Newtonian Telescopes

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in In stock (2)
0.30 kg
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including VAT 20.00 % ( £12.67 )

Farpoint 2" Autocollimator for Newtonian Telescopes for accurate collimation of Newtonian telescopes - fits directly into the 2" focuser.

Made from sturdy machined, anodized aluminium, includes a rubber dust cap.

What is it?

It is a tool used for high precision collimation of Newtonian telescopes as a final step of alignment once the telescope has been collimated with other tools like a laser collimator or Cheshire. Although it looks simple, it can do a better job than a cheap Cheshire Collimator or even a laser collimator, but it is a requirement for the use of this tool that the telescope has been already collimated with one of those those tools and methods that provide less accurate result.

How it works?

On the inside of it there is a very high quality mirror. It will reflect the light back to the primary mirror, but because these are both mirror surfaces there will be multiple reflections, so any misalignment of the mirror will be visible, therfore with the help of this mirror the telescope can be collimated with higher precision than with simpler cheshire collimation tools. 

Why is it called Autocollimator?

No idea. It cannot do the job automatically, so it will still have to be done by yourself... ;o)

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