Description
2" BDS-NT Baader Diamond Steeltrack® Focuser
Upgrade practically any Newtonian, small or large, with all of the smoothness, precision, and features of Baader Planetarium's 2" Newtonian Low-Profile Diamond Steeltrack Focuser.
- Low Profile. Overall height of only 50mm
- Fully Baffled and blackened drawtube kills off-axis stray light. Tube hole size of 2.4" Diameter required for drawtube clearance.
- Focuser travel of 40mm.
- Versa-Base, fits tubes 8" Dia and larger.
- Optional NT Flat Base available.
- Optional low-profile (1mm) 2"/1¼” Pushfix Reducer.
All Baader Diamond Steeltrack (BDS) Focusers have the following specifications:
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 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-reflection knife-edge baffles
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
Read our full product information about the Baader Diamond Steeltrack® Focuser
Specifications
| MANUFACTURER |
Baader Planetarium |
| SKU (#) |
2957230 |
| WEIGHT (NETTO) |
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 |
Downloads
Instruction manual for all Baader Diamond Steeltrack (BDS)
BDS-NT Dimensions (technical drawing)
BDS-NT VersaBase Dimensions (technical drawing)
