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Baader 2" BDS-RT Diamond Steeltrack RT Focuser for Refractor Telescopes

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1.10 kg
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including VAT 20.00 % ( £40.83 )


The new, highly anticipated Baader Diamond Steeltrack is here now! Available from UK stock!

The Baader Diamond Steeltrack range of focusers offer a complete, high quality and high load manual or motorised focusing solution for refractor telscopes, Newtonian reflector telescopes and SCT (Schmidt-Cassegrain) telescopes.

See details below

Drive System:

  • True diamonds form a micro-geared high precision drive system never accomplished before
  • In comparison to conventional crayford or rack & pinion drives, this micro-geared movement has zero backlash, zero cogging, and zero flxure
  • Diamond Steeltrack 2" focusers lift a payload of 6kg (13 lbs) straight up, without slipping, without excessive
    bearing preload (bearing preload can be increased further if necessary)
  • Bearing system utilizes unbreakable Instrument Grade Roller-Bearings instead of simpler Ball Bearings handles higher loads with greater rigidity and accuracy. No Teflon-pads anywhere
  • 1:10 Stainless Steel fine-focus mechanism, ready for attachment of the optional Steeldrive temperature compensating motor drive system
  • Detachable drive block assembly is reversible for right hand or left hand fine-focus operation and for attaching the Steeldrive motorblock onto Diamond-NT-Steeltracks for newtonian telescopes
  • Shortest possible mechanical design achieves optimum balance between focuser height (backfocus) and
    rigidity requirements
  • Zero shift locking knob to precisely stop any movement without affecting optical axis adjustment

Focusing Drawtube:

  • Each bearing individually adjustable for precise alignment of mechanical vs. optical axis
  • Ultra-hard subzero coated bearing races – precision milled and much harder than anodizing or stainless steel
  • Oversized 55mm inner clear diameter, to prevent vignetting, with anti-reflction knife-edge baffles

Clamping System:

  • S58 Dovetail ring-clamp built into focusing tube for accepting optional T-2 / M48 / M68 and other S58 directthread adapters to enable direct thread connection of accessories and cameras without 2" clamp
  • 2" eyepiece clamp with hardened bronze clamp ring (length of clamp: 12.5mm / ½") included as standard
  • Optionally available 2" Baader Clicklock-clamp w. integrated S58 dovetail (added length: 16mm / 5/8")
  • Two auxiliary threads (M60x1 and M55x0,75) cut into the RT & NT focusing-tube for attachment of dedicated
    field flatteners or focal reducers/correctors

Telescope Adapters:

  • Refractor-BDS (RT): Adapters available or under development to fit a wide variety of refractor telescopes (i.e. can be used even with a GSO Ritchey-Chretien. One of our customers used the (now discontinued) 2957085 adapter with this 2957210 2" RT Diamond Steeltrack focuser on his GSO RC telescope. Another customer used a current adapter 2957283 to connect it to his 8" GSO RC telescope.)
  • Newtonian-BDS (NT): Includes Baader Versabase, for perfect fi onto most tube diameters.
     Optional flt mounting base available soon
  • SC/HD-BDS (SC/HD): Includes adapter to fi all C14/C11/C9¼/C8/C6/C5 OTA’s

Click on the above image for a high resolution version!

Above: BDS RT version shown with optional finderscope bracket and optional finderscope shoe.

Images for demonstration purposes only!


Baader Diamond Steeltrack Schematics / Measurements

Baader Diamond Steeltrack Information Scheet


Click on the Customer Feedback tab and read Graham Wilcock's review about this product and how he installed it onto a GSO8" RC. His pictures can be seen below.

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Baader made Takahashi Adapter M72/M68 (Zeiss) CLEARANCE
ZWO EAF - Electronic Automatic Focusmotor
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(1 reviews)  

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1 Most recent customer reviews (see all reviews):
Oct 26, 2019
This customer purchased the item at our site.
Fitting a 2-inch BDS-RT Baader Diamond Steeltrack Focuser to a Teleskop-Service GSO 8-inch Ritchey-Chretien


The TS 8-inch RC has M90x1mm connections at the focuser end of the scope. My setup has a TS
50mm extension adapter with for 6- & 8-inch RC connected to the scope (TS part no: GSRCV50),
to accommodate the long back-focus.
Attached to this is a TS M90 tilting adapter flange (TS part no: GSRCJ90). This is an aid to
collimation and allows the long axis of the focuser to be aligned with the optical axis of the scope.
I then have a standard TS monorail focuser for the RC, again with an M90x1 connection.
Image 1 shows the 50mm extension and tilting flange, with the old focuser removed. Note the M90
male thread at the end of the flange, to which the focuser connects.
Fitting the Baader Diamond Steeltrack RT
It is assumed that the reader has access to the Steeltrack manual and has purchased the necessary
RT-Adapter M90x1 Diamond Steeltrack (Baader part number 2957283).

1. The Steeltrack RT is supplied with an M68 adapter as standard. Remove this by loosening
the M5 screws around its outer edge. An M88 dovetail is exposed. See Image 2.

2. Connect the new RT-adapter to the Steeltrack, tightening the M5 screws sufficiently to hold
it in place, but still just rotates. Note that the thumbscrew from the M68 adapter can be
transferred. See Image 3.

3. Connect the Steeltrack to the tilting flange, rotate the focuser to the desired orientation, then
tighten the thumbscrew to lock it in place. If desired, the M5 screws around the edge of the
M90 adapter can be tightened for a firmer grip. See Image 4.

After fitting the Steeltrack, I can confirm that the focuser has the full 80mm inward travel.

This above method should still be applicable, even if a tilting flange is not present, as M90x1mm
connections are standard on this size of RC. However, with only the 50mm extension in place, it
may be that the focuser will not move the final 5mm of inward travel, depending upon the size of
any baffle at the junction of the extension and the scope.
Note that an alternative method is not to transfer the thumbscrew from the M68 to M90 adapters,
but to use the all the standard screws.

October 2019
(see customer's images under the product description; Zoltan, 365Astronomy)
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