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Baader Diamond Steeltrack (BDS) 2" Focuser for Refractors (RT)

£285.00
SKU 2957210

Availability: Immediate Dispatch

  • Baader Diamond Steeltrack (BDS-RT) for Refractors with 80 mm focus travel
  • Minimum height (as supplied – incl. 2" clamp): 78 mm
  • Minimum height (with optional S58 direct-thread adapters): 65 mm
  • Focuser weight (as supplied – incl. 2" Klemme): 1.160 g (40.9 oz)
  • Adaptors available or under development to fit a wide variety of refractor telescopes
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
SKU (#) 2957210
WEIGHT (KG) 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. ADAPTORS) 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