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Adapter from 2" to 1.25" with 2" Filter Thread - ZERO Optical Path

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in In stock (2)
0.25 kg
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including VAT 20.00 % ( £3.50 )

D2 A5

2" to 1.25" Eyepiece Adapter
Adapts from 2" nosepiece to 1.25" Nosepiece Holder with 2" inner thread for your specialised deepsky, colour or other filter

This is an adapter from 2" (50.8mm) to 1.25" (31.7mm) with 2" inner filter thread (external 2" / 50.8mm nosepiece) and with 1.25" barrell (nosepiece holder) with zero optical path (i.e. to accept a 1.25" eyepiece for visual observations or projection eyepiece for afocal photography).

You can use the 2" filter thread to screw on your filters or other accessories. The filter thread's metrical size is M48 x 0.75.

Theoretical optical path is 0mm
There is a 2mm collar at the top end, but depending on your 2" eyepiece holder this will or will not count as an optical path.

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Baader M68 Extension tube 100mm
Celestron Ultima Duo 13mm Eyepiece - 2" / 1.25"
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