Baader 2" Diamond Steeltrack Focuser for Newtonians (BDS-NT)

Baader 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

Technical 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

In the Box

• 2" Diamond Steeltrack Focuser for Newtonians

Warranty & Manuals

2-Year Warranty