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EBTOOLS

Machined adapters and one eyepiece camera

Fittings, not optics

Two of the three EBTOOLS products on this site are machined couplings: a 2 inch nosepiece with an M42 thread, a T-ring and coupling for a Canon body. Neither contains a lens, and the pages say so in their first line — one of them sits on the focal reducer shelf because of how it was catalogued, not because it reduces anything.

Why that matters

A reducer changes the focal length; an adapter joins two threads. Filing one as the other is a cataloguing accident, and on this site the page corrects the impression rather than inheriting it.

The camera

An electronic eyepiece camera, judged on sensor and frame rate like the rest of its shelf.

Reading an EBTOOLS page here

Check whether the part has glass in it. The shelf it sits on does not always tell you.

EBTOOLS in this catalogue

Everything EBTOOLS puts on these shelves

  • EBTOOLS 2 inch to T2 telescope camera adapter

    EBTOOLS 2 in to T2 adapter

    A 2 in nosepiece adapter carrying a T2 male thread for the camera and an M48 internal thread for a filter, with a fully matted bore.

    Reduction factor
    Not published by the maker.
    Required back focus
    Not published by the maker.
    Image circle
    Not published by the maker.
    Corrector function
    Not published by the maker.
    Thread standards
    2 in nosepiece for a 2 in focuser · M42 × 0.75 male — the T2 thread · M48 × 0.75 internal, at the front
    Vignetting
    “Full frame with 2 inch, no dark corners”, as the maker states it
    Housing
    Fully matted internal thread; black hard-anodised outside
    Amazon reference
    B07MCH2CVN (same reference on 5 Amazon marketplaces)
    EAN
    0719527383403
    • Carries an M48 filter thread at the front, so a 2 in filter fits in the same part
    • Fully matted bore, which matters immediately in front of a sensor
    • The no-dark-corners claim is made without naming a sensor size

    Best for: Putting a T2-threaded camera into a 2 in focuser with a filter in the path

    ≈ £15 / €15
    Check price on Amazon
  • EBTOOLS Canon EOS T-ring with 1.25 inch telescope coupling

    EBTOOLS T-ring and 1.25 in coupling for Canon EOS

    A set containing a Canon EOS T-ring and a 1.25 in to M42 coupling, with an inner ring that rotates to orient the camera.

    Camera mount
    A long list of Canon EOS and Rebel models is given in the first bullet
    T2 thread
    Not published by the maker.
    Flange distance
    Not published by the maker.
    Prime focus or projection design
    A T-ring for Canon EOS and a 1.25 in to M42 coupling, per the maker · 1.25 in (31.7 mm)
    Blackening
    Not published by the maker.
    Material
    Anodised aluminium
    Amazon reference
    B07JNSHWX7 (same reference on 5 Amazon marketplaces)
    EAN
    0757686467206
    • Both halves of the chain are supplied together, which is rarer than it should be
    • A rotating inner ring lets the camera be squared to the subject without unthreading
    • The compatibility list contains model names that do not resolve, such as “T4ki” and “Rebeliii1”

    Best for: A Canon EOS owner who wants both halves of the coupling in one purchase

    ≈ £15 / €16
    Check price on Amazon

Any figure written into the body of this page was true on the day it was written. The amount shown next to each instrument is requested from the retailer as the page loads, and it is that amount, not the text, that stands.