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365Astronomy Collimating Eyepiece for Newtonian Telescopes, Long Collimator

365Astronomy Collimating Eyepiece for Newtonian Telescopes, Long Collimator

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in In stock (20)
Model
VSE36517
Weight
0.30 kg
RRP:
£26.80
Our price:
£22.90
15%

including VAT 20.00 % ( £3.82 )
Qty

This collimating eyepiece (collimator) is for 31.7mm, 1.25” focusers.
It comes with a rubber eyeshield that makes it more comfortable to use in comparison to those with just a flat metal top.

It is similar to the Cheshire-type, but in addition it is equipped with a crosshair.

The collimating eyepiece has a shiny metallic, angled ( under 45 deg) surface with a hole in the middle.

Through the hole you can see through to the front lense when collimating a refractor telescope.

As it is more practical to use it in daytime, please leave the lens cover on to make sure that the reflection could be seen.

When looking through the hole, the sloping, shiny surface will be seen as a shiny circle in the middle.

In the case of a well collimated refractor there will be two reflections, which lie on the top of each other, and are centred in the middle of the picture.

 

It can also be used for collimating reflector telescopes, i.e. Newtonian telescopes.

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