Baader Diamond Steeltrack (BDS) 2″ Focuser for Newtonian Telescopes (NT)
£275.00
- 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
Availability: Please check our dealer locator to find your nearest stockist.
Description
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 utilises 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 anodising or stainless steel
- Oversized 55mm inner clear diameter, to prevent vignetting, with anti-reflection knife-edge baffles
Specifications
| MANUFACTURER | Baader Planetarium |
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| SKU (#) | 2957230 |
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| WEIGHT (KG) | 1.04 |
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| FOCUSER TRAVEL | 40 mm |
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| PAYLOAD CAPACITY (KG) | 6 kg |
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| INNER DIAMETER / CLEAR APERTURE (MM) | 55 |
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| SHORTEST OVERALL HEIGHT (STANDARD) | 63 mm |
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| SHORTEST OVERALL HEIGHT (W. OPT. ADAPTERS) | 50 mm |
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| REDUCTION | 1:10 |
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| ROTATABLE | Yes |
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| FINDER BASE | No |
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| MOTORIZED | No, but can be upgraded |
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| SPECIAL FEATURES | True diamonds form a micro-geared high precision drive system |
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| INCLUDED ACCESSORIES | Includes Baader Versabase, for perfect fit onto most tube diameters. Optional flat mounting base also available |
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| OUTER CONNECTION (LENS SIDED) | Dovetail ring, S88 |
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| INNER CONNECTION (EYEPIECE/-CAMERA-SIDED) | Thread, Clamp, Dovetail ring clamp, M55, S58, 2″ (50,8mm) |
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| OPTIONAL ACCESSORIES | Baader Steeldrive temperature compensating motor drive system |
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| COMPATIBLE TELESCOPES | Newton |
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| FOCUSER STYLE | Crayford |
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| FOCUSER SIZE | 2 inch |
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