2" BDS-NT Baader Diamond Steeltrack® Focuser

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2" BDS-NT Baader Diamond Steeltrack® Focuser

# 2957230

€ 305.00 Price excl. German VAT tax (19%): € 256.30

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  • Baader Diamond Steeltrack® (BDS-NT) for Newtonian telescopes with 40 mm focus travel
  • Minimum height (as supplied – incl. 2" clamp): 63 mm
  • Minimum height (with optional S58 direct-thread adapters): 50 mm
  • Focuser weight (as supplied – incl. 2" Klemme): 1.000 g (35.25 oz)
  • Includes Baader Versabase, for perfect fit onto most tube diameters. Optional flat mounting base also available

Product Questions

Sort by ASC
Is there a unit suitable for a Celestron CPC 9.25"? the one in description says newtonian. Thanks
Question by: David Hewitt on Jan 31, 2018 10:21:00 PM | 1 Answer(s)
Can the Diamond Steeltrack NT focusser be installed on a Skywatcher MN190 without drilling holes?
Question by: Wouter on Oct 7, 2018 8:34:00 PM | 1 Answer(s)
I bought recently this focuser, but i made the hugh mistake to move the drawtube align screws and now nothing work correctly the tube is no more aligned. Do you have a trick to put the drawtube perfectly on axis ? I tried but its not okay at all.....

Thank you
Question by: Alexis on Jun 11, 2018 3:28:00 PM | 1 Answer(s)
Would it be possible to fit this to a Skywatcher 130 PDS?
Question by: Fakhri Al-Alami on Jan 15, 2019 11:49:00 PM | 1 Answer(s)
I am interested in your Diamond Steeltrack NT Focuser for replacing the original Rack & Pinion focuser (which is lacking 1:10 fine-focus) on my Sky-Watcher Explorer-PX250 telescope (Aperture 254 mm, Focal length 1200 mm, Newton reflector).
Have you a base plate for this focuser which is suited to this telescope tube? I have measured the distance for the bore holes lengtwise to the tube to be about 86 mm, and crosswise to about 81 mm. The latter distance is measured with a caliper, i.e. it is the straight distance between the holes, not the slightly longer distance measured along the circumference of the tube. The tube diameter is 285 mm.
I hope there is a suitable base plate available for my telescope.
Question by: Gunnar K. on Oct 27, 2016 10:58:00 AM | 1 Answer(s)
Hi, I would like to purchase a Baader Diamond SteelDrive System Without Hand Control, part number 2957152 plus a Baader 2 Inch Diamond Steeltrack NT Focuser, part number 2957230. Can you tell me if this set up would fit a Skywatcher Newtonian 200p and then controlled through a laptop using Sequence generator pro without the hand controller.
Hope you can help,
Kind regards,
Phil Rees
Question by: Philip Rees on Apr 7, 2018 6:06:00 PM | 1 Answer(s)
Question by: Pete Krimbel on Nov 15, 2018 9:57:00 PM | 1 Answer(s)
Does the S58 dovetail mean that the steeltrack effectively has a rotator built in? I mean, if I use an S58 dovetail to M48 adapter for example to thread into my imaging train, I could then clamp it down onto the steeltrack in any chosen orientation of the camera?
Question by: Paul B. on Mar 11, 2019 9:26:00 PM | 1 Answer(s)


Video of mounting instructions

BDS-NT Mounting instructions
on an 8" Newtonian telescope in nine simple steps

  1. Remove current Focuser
  2. Remove screws and spacers of BDS-NT Diamond Steeltrack®
  3. Loosely mount new focuser using the old holes
  4. Remove focuser from VersaBase by opening 8x hex screws
  5. Use old screws and nuts for centering VersaBase plate
  6. Drill four new 5mm holes (straight to tube center) in the middle of each elongated cutout
  7. Attach radial sliding bolts, fasten from inside out with hex tool as shown
  8. Remove old screws. VersaBase plate is now adjustable for your needs
  9. Attach Diamond Steeltrack® in prefered position, tighten 8x hex-screws
Baader Diamond Steeltrack® Adapter
BDS-NT strip shims

Using NT-strip-shims of Baader VersaBase
for different tube sizes

Our mounting instruction above was made on a 8" Newtonian – for these instruments our strip shims (adjustment spacers) are not needed. For other tube diameters, please use our strip shims between the telescope tube and the Baader VersaBase (the base of our BDS-NT Diamond Steeltrack®). You gain up to 4mm height. Please note the self-explanatory gif to the left.

Baader NT Diamond Steeltrack on Newton
Application example of BDS-NT Diamond Steeltrack®
Comparison of Classic and Diamond Steeltrack
Comparison of Classic and Diamond Steeltrack®

General Specifications for all Baader Diamond Steeltrack® (BDS) focusers:

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 flexure
  • 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 Diamond 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 Diamond Steeldrive motor block
  • 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

Baader Diamond Steeltrack Adapters
Multiple Adapters available for shortest possible connection to most cameras / eyepieces
Multiple  Telescope-Adapters
Mounting of BDS-Adapters on the example of BDS-NT Diamond Steeltrack

Clamping system

  • S58 Dovetail ring-clamp built into focusing tube for accepting optional T-2 / M48 / M68 and other S58 direct-thread 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

Baader NT Diamond Steeltrack
BDS-NT: all views
Imaging / Eyepiece projection
Imaging / eyepiece projection on the example of BDS-RT Diamond Steeltrack

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-reflection knife-edge baffles

Additional Information

Manufacturer Baader Planetarium
SKU (#) 2957230
Weight (kg) 1.04
Focuser Travel 40 mm
Payload Capacity (kg) 6 kg
Inner Diameter / Clear Aperture (mm) 55
Shortest overall height (standard) 63 mm
Shortest overall height (w. opt. adapters) 50 mm
Reduction 1:10
Rotatable Yes
Finder base No
Motorized No, but can be upgraded
Special Features True diamonds form a micro-geared high precision drive system
Included Accessories Includes Baader Versabase, for perfect fit onto most tube diameters. Optional flat mounting base also available
Outer Connection (lens sided) Dovetail ring, S88
Inner Connection (eyepiece/-camera-sided) Thread, Clamp, Dovetail ring clamp, M55, S58, 2" (50,8mm)
Optional Accessories Baader Steeldrive temperature compensating motor drive system
compatible telescopes Newton
Focuser style Crayford
Focuser size 2 inch

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3 Item(s)

Nikolaus Popa 275/10/2019 03/10/201917:44
  • Rating:
Spitzen OAZ
Ich habe den original OAZ gegen den 2“ BDS-NT ausgetauscht und bin absolut begeistert, wie geschmeidig dieser läuft und wie Bomben fest dieser sitzt. Vielen Dank an Baader!!
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Alex 290/10/2017 18/10/201702:06
  • Rating:
good value for money
looking for an alternative to others expensive focusers on the market and a good value for money?
it is time to take an interest in these Steeltrack focusers.
As always with Baader, the finishing is perfect and the telescope has a great look with it.
It was not so easy to install because you have to drill your tube. Even if it is thin, the drill bit can slip because the surface is not flat.
Do not forget to protect your secondary mirror (for NT) from the filings.
You should certainely have to redo your optical lane with the two mirrors, but this is not a hard process.
Then enjoy: very smooth, really precise with micro movements, and very rigid.
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Bernd Gooßmann 286/10/2016 13/10/201603:47
  • Rating:
Vor wenigen Tagen habe ich einen 2" Diamond Steeltrack BDS-NT incl. SteelDrive erhalten und damit meinen bisherigen 2" OAZ (hochwertiger Hersteller mit Focus-Stepper) ersetzt.
Der Umbau ging extrem leicht von der Hand und ich darf an dieser Stelle sagen: Was für eine tolle Qualität! Ich bin total begeistert von der Steifigkeit und der Stabilität! Es rutscht nichts durch (trotz 2,5kg-Kamerakopf incl. Korrektor, Filterrad usw.) und es wackelt und federt auch nichts. Die Kollimierung bleibt bei meinem 10"er nach einem Meridian-Flip einwandfrei erhalten! Auch das Positionieren des Auszuges mittels SteelDrive funktioniert wie aus dem Lehrbuch - ohne Backlash!!

Einen herzlichen Glückwunsch an das Baader-Team für dieses extrem durchdachte Produkt!
  • absolut stabil, extrem steif, federt nicht, kein Backlash, in Verbindung mit dem SteelDrive absolut positionierbar
  • noch nicht ganz fertiger ASCOM-Treiber
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