Description

2" BDS-RT Baader Diamond Steeltrack® Focuser

Baader Planetarium's 2" Refractor Diamond Steeltrack Focuser gives refractors a full 3" (76mm) of velvety smooth focusing travel. Easily adaptable to popular refractors.

Overall length fully retracted 80mm (backfocus length).
Drawtube is fully internally baffled and blackened to eliminate off-axis stray light.
72mm dovetail receiver permits 360degree rotation of focuser with single-screw locking.
Optional adapters available to fit a variety of other refractors.

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 (#)	2957210
WEIGHT (NETTO)	1.04
FOCUSER TRAVEL	80 mm
PAYLOAD CAPACITY (KG)	6 kg
INNER DIAMETER / CLEAR APERTURE (MM)	55
SHORTEST OVERALL HEIGHT (STANDARD)	78 mm
SHORTEST OVERALL HEIGHT (W. OPT. ADAPTERS)	65 mm
REDUCTION	1:10
ROTATABLE	Yes
FINDER BASE	Yes
MOTORIZED	No, but can be upgraded
SPECIAL FEATURES	True diamonds form a micro-geared high precision drive system
INCLUDED ACCESSORIES	Adapters available or under development to fit a wide variety of refractor telescopes
INNER CONNECTION (LENS SIDED)	Thread, M60
OUTER CONNECTION (LENS SIDED)	Thread, Dovetail ring, M68 x 1, 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	Refractors
FOCUSER STYLE	Crayford
FOCUSER SIZE	2 inch

Downloads

Instruction manual for all Baader Diamond Steeltrack (BDS)

Baader Diamond Steeltrack Advertisement

The perfect combination: Diamond Steeltrack, BBHS and Morpheus

BDS-RT Dimensions (technical drawing)

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