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Baader Adapter NT Steeltrack - 2"/1.25"

Baader Adapter NT Steeltrack - 2"/1.25"

by Baader Planetarium
SKU BAA-2408152
CA$40.00 - CA$40.00
CA$40.00
CA$40.00 - CA$40.00
CA$40.00
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  • Reduces 2" focusers to accept 1.25" eyepieces and accessories
  • Adds only 4.5mm of optical height, preserving critical back focus
  • Engineered specifically for Baader BDS NT Diamond Steeltrack focusers
  • Essential for Newtonians with limited back focus travel
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Baader Adapter NT Steeltrack - 2"/1.25"

    Designed specifically for Baader's BDS NT Diamond Steeltrack focusers, the Baader NT Steeltrack Adapter reduces the 2" barrel to accept 1.25" eyepieces while adding only 4.5mm of optical height to the light path. This ultra-low-profile design is critical for achieving focus in optical systems with limited back focus, particularly Newtonian reflectors equipped with coma correctors or imaging trains.

    The 4.5mm Low-Profile Design for NT Focusers

    The defining feature of this adapter is its minimal 4.5mm optical height. For Newtonian ("NT") telescopes, which are often starved for back focus, every millimeter is crucial. This adapter replaces taller, generic reducers to reclaim precious focus travel, enabling the use of accessories that would otherwise be impossible to bring to a sharp focus.

    Baader NT Adapter vs. Standard Reducers: Gaining Back Focus

    Standard 2" to 1.25" reducers can add a centimeter or more to the optical path, consuming valuable back focus. The Baader NT Steeltrack adapter is engineered to be as short as physically possible. This makes it the definitive solution when a coma corrector, off-axis guider, or filter wheel leaves no room to spare in your imaging setup.

  • What is the primary purpose of the Baader Adapter NT Steeltrack?

    Its primary purpose is to allow the use of 1.25" eyepieces and accessories in a 2" Baader BDS NT Diamond Steeltrack focuser with the absolute minimum increase in optical path length. Its ultra-low 4.5mm profile is designed to solve back focus problems common in Newtonian telescopes.

    I can't reach focus with my 1.25" eyepiece in my Newtonian with a Baader MPCC. Will the NT Steeltrack Adapter help?

    Yes, this is precisely the scenario the adapter is designed for. A standard reducer is often too tall to allow an eyepiece to reach focus after a coma corrector is installed. By adding only 4.5mm of height, this adapter frequently provides the critical millimeter savings needed to achieve a sharp image.

    If I'm imaging with a fast f/4 Newtonian, why would I choose this Baader NT adapter over a standard reducer?

    Fast Newtonians (f/4-f/5) typically have very little back focus, a problem compounded by the addition of a coma corrector. The 4.5mm optical height of the Baader NT adapter is essential in these systems to ensure your camera's sensor can reach the focal plane without modification to the telescope.

    Why is '4.5mm Optical Height' the most important specification for this adapter?

    Optical height directly subtracts from your telescope's available back focus. Back focus is a finite resource required to accommodate any component in the light path, from cameras to filter wheels. A low optical height of 4.5mm maximizes the available back focus for other, more critical accessories.

    Is the Baader NT adapter compatible with focusers other than the Baader Diamond Steeltrack?

    While it may physically fit into other 2" focusers, it is specifically machined for the thread and seating of the Baader BDS NT Diamond Steeltrack. Use with other focusers is not guaranteed to provide the same low-profile benefit or secure fit.

    What does 'NT' signify in the Baader Diamond Steeltrack product line?

    The 'NT' designation typically stands for Newtonian Telescope. Baader uses this to label focusers and accessories that are specifically optimized for the unique mechanical and back-focus requirements of Newtonian reflector telescopes.

  • Adapter Type 2" to 1.25" Reducer
    Compatibility Baader BDS NT Diamond Steeltrack Focusers
    Optical Height 4.5mm
    Net weight (kg) 0.09
    Clamping System Screw clamps
    Inner Diameter / Clear Aperture (mm) 31.6
    Outer Diameter 55
    Inner Connection (eyepiece/-camera-sided) ø 1¼" (31.75 mm)
    Inner Connection (lens sided) M48
    Outer Connection (lens sided) ø 2" (50.8mm)
    Adaptable to Newton-Teleskope

    • Baader Adapter NT Steeltrack - 2"/1.25"

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  • Baader Planetarium Warranty Policy