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Baader Diamond Steeltrack 2" Focuser for SC/HD Telescopes

SKU BAA-2957220
Original price CA$532.00 - Original price CA$532.00
Original price
CA$532.00
CA$532.00 - CA$532.00
Current price CA$532.00
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  • Precision focuser for Schmidt-Cassegrain & EdgeHD telescopes
  • Eliminates mirror shift for critical focusing
  • Diamond Steeltrack drive system prevents slippage under load
  • Includes adapters for both 2" and 3.3" SCT rear threads
  • Features a 2" eyepiece holder with brass clamp ring
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty
  • Baader Diamond Steeltrack 2" Focuser for SC/HD Telescopes

    The Baader Diamond Steeltrack 2" Focuser is a fundamental upgrade for any Schmidt-Cassegrain or EdgeHD telescope, replacing the often-problematic stock focuser with a high-precision, zero-slip mechanism. It connects directly to both standard 2" and large-format 3.3" rear cell threads, providing a robust platform that completely eliminates mirror shift during critical focusing operations.

    Native Fit for 2" and 3.3" SC/HD Threads

    This Diamond Steeltrack focuser is engineered specifically for the Schmidt-Cassegrain ecosystem. It includes the necessary adapters to thread directly onto the rear cell of virtually any modern SCT, from smaller 6" and 8" models with 2" threads to larger 9.25", 11", and 14" instruments that use the larger 3.3" thread standard.

    The benefit of this external focuser is the immediate elimination of mirror shift—the slight image movement caused by the primary mirror tilting on its baffle during focusing. By locking the primary mirror and using the Diamond Steeltrack for fine adjustments, you ensure your target remains perfectly centered, a requirement for high-magnification planetary imaging and autoguiding.

    The 2" Diamond Steeltrack Drive: Zero-Slip Load Bearing

    At the heart of the focuser is the Diamond Steeltrack drive system. Unlike friction-based Crayford focusers, this design uses a hardened stainless steel drive shaft that meshes with ball bearings running on a polished steel track. This positive, non-slip engagement ensures the 2" drawtube holds its position perfectly, even when loaded with heavy imaging trains.

    Whether you're using a heavy 2" eyepiece, a large diagonal, or a full imaging setup with a camera, filter wheel, and off-axis guider, the Steeltrack drive will not flex or slip. This stability is critical for maintaining focus throughout a long imaging session, especially when the telescope is pointed near the zenith where gravity exerts maximum pull on the drawtube.

    Steeltrack vs. Crayford: Solving Focuser Slip in SC/HD Imaging

    While a standard Crayford focuser offers smooth motion, its reliance on friction is a known weak point for serious imaging with an SCT. Under heavy loads, a Crayford can slip, causing a sudden focus shift that can ruin an exposure. This is a problem the Diamond Steeltrack design was built to solve.

    • Crayford Focuser: A smooth, round shaft presses against a flat plate on the drawtube. It relies entirely on friction and can slip under heavy or off-balance loads.
    • Diamond Steeltrack Focuser: A geared drive meshes with roller bearings. This is a positive mechanical engagement that physically cannot slip, regardless of the load or telescope orientation. For SCT imagers, this reliability is the primary reason to choose the Steeltrack system.
  • How does the Baader Diamond Steeltrack improve focusing on my SCT?

    The Diamond Steeltrack provides a high-precision, external focusing mechanism that bypasses the telescope's primary mirror focusing system. This completely eliminates image shift (or "mirror flop"), which is the slight movement of the view when using the stock focuser knob. It allows for extremely fine and repeatable focus adjustments essential for high-resolution imaging and visual observation.

    Which Celestron and Meade telescopes will the Diamond Steeltrack fit out of the box?

    This model is designed for broad compatibility. It includes adapters for both the small 2"-24TPI thread found on Celestron C5, C6, C8, and C9.25 telescopes (and older Meade models), and the large 3.3"-16TPI thread found on Celestron C11 and C14 models. It will fit most modern Schmidt-Cassegrain and EdgeHD telescopes without requiring additional adapters.

    Do I still use my SCT's original focus knob with the Diamond Steeltrack?

    No, the workflow changes for the better. You first use the original SCT knob to achieve a rough focus, and then you lock the primary mirror in place (if your scope has mirror locks). From that point on, all fine focusing is done exclusively with the Baader Diamond Steeltrack, which ensures stability and prevents any further mirror movement.

    Can I motorize the Baader Diamond Steeltrack focuser?

    Yes, the Diamond Steeltrack is designed for easy motorization. Baader Planetarium offers the SteelDrive II motor system, which attaches directly to the focuser for precise, computer-controlled focusing. This is a popular upgrade for remote and automated imaging setups.

    Will the Baader Diamond Steeltrack handle my heavy camera setup for imaging Jupiter with a Celestron C11 EdgeHD?

    Absolutely. This is exactly the scenario the Diamond Steeltrack is built for. The C11 EdgeHD has the large 3.3" rear thread, which this focuser fits natively. Its zero-slip drive system can easily support a heavy planetary imaging camera, filter wheel, and Barlow lens without flexing or slipping, ensuring you maintain critical focus on Jupiter's cloud bands throughout your capture session.

    I have a Meade 8" LX200. Will the Diamond Steeltrack prevent mirror shift when imaging the Hercules Cluster (M13)?

    Yes. The Meade 8" scope typically uses the 2" rear thread, so the included adapter will provide a secure connection. When imaging a bright target like the Hercules Cluster (M13), achieving perfect focus on the dense core is critical. By locking the primary mirror and using the Diamond Steeltrack, you eliminate mirror shift, ensuring your guide star doesn't move and your long exposures remain sharp across the field.

  • Focuser Type Diamond Steeltrack Rack & Pinion
    Format 2"
    Telescope Compatibility Schmidt-Cassegrain & EdgeHD
    Included Thread Adapters 2"-24TPI and 3.3"-16TPI
    Net weight (kg) 1.07
    Included Accessories Includes adapter to fit all C14/C11/C9¼/C8/C6/C5 OTA’s
    Special Features True diamonds form a micro-geared high precision drive system
    Optional Accessories Baader Steeldrive temperature compensating motor drive system
    Inner Diameter / Clear Aperture (mm) 55
    Focuser style Crayford
    Focuser Travel 30 mm
    Shortest overall height (standard) 93 mm
    Shortest overall height (w. opt. adapters) 80 mm
    Motorized No, but can be upgraded
    Reduction 1:10
    Payload Capacity (kg) 6 kg
    Finder base No
    Rotatable Yes
    Inner Connection (eyepiece/-camera-sided) ø 2" (50.8mm), M55, S58
    Inner Connection (lens sided) 2"/SCT Thread (50.8mm), 3.3"/SCT Thread (84.2 mm)
  • Baader Planetarium Warranty