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Baader T-2 / 40 mm Telescope Optical Extension Tube - 1508153

Lots in Stock - Ships Today if Ordered by 2pm EDT! (Mon - Fri)
Accessory
1508153
$38 CAD
We will price-match in-stock Canadian astronomy dealer pricing


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Baader T-2 extension tubes enable you to securely add space between T-2 components. This T-2 #25B 1508153 T-thread extension (spacer tube) provides 40mm of extension. It features an internal T-2 thread (M42x0.75) at one end and an external T-2 thread at the opposite end. Full internal threading and blackening kills any stray light reflections.

  • 40mm optical path length
  • Telescope side T-2 internal thread
  • Focus side T-2 external thread
  • For eyepiece projection with shift/sliding focuser
  •  

    For over 30 years Baader have focused on the Astro T-2 thread system (M 42 x 0.75 mm); virtually every telescope manufacturer must offer this thread far ahead of the focal point of his instrument, such a universal T-ring (for DSLR cameras) can be connected.

    The only exceptions are (still) Russian equipment, there the thread diameter is the same, but the pitch is still 1mm per revolution - rather than 0.75mm! Therefore, Baader offers among other things a "Russians adapter". At only 7mm additional optical length it can allow so many Russian lenses or telescopes to be compatible with an international Astro T-2 (M 42 x 0.75mm) connector!

    For the sake of better recognition mostly are marked. See marking small 'a' or small 'i' in the respective indication! "a"; identifies an external thread (male); or, if Ø sign which a diameter, "i"; - a female is always (female) or - Ø character - an inner diameter.

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