BDS-NT Mounting instructions
on an 8" Newtonian telescope in nine simple steps
- Remove current Focuser
- Remove screws and spacers of BDS-NT Diamond Steeltrack®
- Loosely mount new focuser using the old holes
- Remove focuser from VersaBase by opening 8x hex screws
- Use old screws and nuts for centering VersaBase plate
- Drill four new 5mm holes (straight to tube center) in the middle of each elongated cutout
- Attach radial sliding bolts, fasten from inside out with hex tool as shown
- Remove old screws. VersaBase plate is now adjustable for your needs
- Attach Diamond Steeltrack® in prefered position, tighten 8x hex-screws
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.
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
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
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
2" BDS-NT Diamond Steeltrack® Focuser for Newton-telescopes, 40mm focus-travel
- SKU2957230
- compatible telescopesNewton
- EAN Code4047825031990
- Finder baseNo
- Focuser size2 inch
- Focuser styleCrayford
- Focuser Travel40 mm
- Included AccessoriesIncludes Baader Versabase, for perfect fit onto most tube diameters. Optional flat mounting base also available
- Inner Connection (eyepiece/-camera-sided)ø 2" (50.8mm)M55S58
- Inner Diameter / Clear Aperture (mm)55
- ManufacturerBaader Planetarium
- MotorizedNo, but can be upgraded
- Net weight (kg)1.01
- Optional AccessoriesBaader Steeldrive temperature compensating motor drive system
- Outer Connection (lens sided)S88
- Payload Capacity (kg)6 kg
- Reduction1:10
- RotatableYes
- Shortest overall height (standard)63 mm
- Shortest overall height (w. opt. adapters)50 mm
- Special FeaturesTrue diamonds form a micro-geared high precision drive system
Customer Reviews
Top customer reviews
Thanks for your overall positive review and constructive feedback. Our development department has commented the following:
The Focuser knobs position is a function of the position of the driving mechanism and the aim of the shortest possible body with the highest strength. Therefore, if we move the focuser knobs further away from the front plate, the strength of the System is reduced because the center of the pressure is not in the right orientation towards the needle bearing. So in essence, in order to generate more place in between the Frontplate and the knobs, we would have to allow for more physical length of the focuser, or for less loading capazity. Both of which is not desirable. Therefore we decided to leave it like this. One more option would be smaller focusing knobs as an upgrade to the existing once. If this might be of interest.
Your suggestion of offering a direct bundle with ClickLock clamp will be considered.




