Lunático Astronomía

Baader Diamond Steeltrack (BDS) focuser

305,00325,00

Baader 2″ Diamond Steeltrack® Focuser. The completely new construction combines extreme durability and precision with high payload!

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Baaader Diamond Steeltrack® (BDS) focusersBaader Steeltrack Lunatico Astronomia

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 6 kg (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 motor block onto Diamond-NT-Steeltracks for Newtonian telescopes
  • The shortest possible mechanical design achieves the 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

Baader Steeltrack

  • 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 55 mm clear inner diameter, to prevent vignetting, with anti-reflection knife-edge baffles

Clamping System

  • S58 dovetail ring-clamp built into focusing tube for accepting optional T2 / 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: 12.5 mm / ?”) included as standard
  • Optionally available 2″ Baader Clicklock-clamp w. integrated S58 dovetail (added length: 16 mm / 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/correctorsA smoothly running Crayford focuser is a good addition for Schmidt-Cassegrains.

Telescope adaptation:

  • Refractor – BDS (RT)
  • Newton – BDS (NT)
  • SC / HD-BDS (SC / H): as Celestron and Meade S/C telescopes

Technical Specifications:

  • All BDS focusers could be automatized with the Seletek controllers: Armadillo, Platypus, Limpet and Tarsier.
  • Steeltrack Diamond for refractors – BDS (RT):
    • Drawtube Travel: 80mm.
    • Payload: 6kg.
    • Fine focusing: 1/10
    • Special feature: Micro-geared drive system made of diamonds
    • Bearing: Roller-Bearing, 10 mm width, adjustable
    • Clear aperture: 55 mm
    • Telescope side connection: supplied adapters for C5/C6/C8/C9.25/C11/C14
    • Focus side clamping: S58 dovetail ring-clamp for accepting of S58 direct-thread adapters
    • Focus side eyepiece clamp (icluded): 2″ eyepiece clamp with hardened bronze clamp ring (length of clamp)
    • Minimal total height (as delivered – incl. 2″ clamp): 78 mm
    • Minimal total height (with optional S58 direct-thread adapters): 65 mm
    • Total weight (incl. 2″ clamp): 1160 g
    • adaptation to the Seletek Armadillo and the Seletek Platypus available for automated focusing, and to the Seletek Tarsier for motorized focusing.*
  • Steeltrack Diamond for Newton telescopes – BDS (NT):
    • Drawtube Travel: 40mm.
    • Payload: 6kg.
    • Fine focusing: 1/10
    • Special feature: Micro-geared drive system made of diamonds
    • Bearing: Roller-Bearing, 10 mm width, adjustable
    • Clear aperture: 55 mm
    • Telescope side connection: supplied adapters for C5/C6/C8/C9.25/C11/C14
    • Focus side clamping: S58 dovetail ring-clamp for accepting of S58 direct-thread adapters
    • Focus side eyepiece clamp (icluded): 2″ eyepiece clamp with hardened bronze clamp ring (length of clamp)
    • Minimal total height (as delivered – incl. 2″ clamp): 63 mm
    • Minimal total height (with optional S58 direct-thread adapters): 50 mm
    • Total weight (incl. 2″ clamp): 1000 g
    • adaptation to the Seletek Armadillo and the Seletek Platypus available for automated focusing, and to the Seletek Tarsier for motorized focusing.*
  • Steeltrack Diamond for SCT/EHD focuser (SC / H)
    • Drawtube Travel: 30mm.
    • Payload: 6kg.
    • Fine focusing: 1/10
    • Special feature: Micro-geared drive system made of diamonds
    • Bearing: Roller-Bearing, 10 mm width, adjustable
    • Clear aperture: 55 mm
    • Telescope side connection: supplied adapters for C5/C6/C8/C9.25/C11/C14
    • Focus side clamping: S58 dovetail ring-clamp for accepting of S58 direct-thread adapters
    • Focus side eyepiece clamp (icluded): 2″ eyepiece clamp with hardened bronze clamp ring (length of clamp)
    • Minimal total height (as delivered – incl. 2″ clamp): 93 mm
    • Minimal total height (with optional S58 direct-thread adapters): 80 mm
    • Total weight (incl. 2″ clamp): 1040 g
    • adaptation to the Seletek Armadillo and the Seletek Platypus available for automated focusing, and to the Seletek Tarsier for motorized focusing.*

    Steeltrack Diamond con SeletekBaader SCT/EHD Diamond Steeltrack Focuser with motor and plate for SELETEK Armadillo, Seletek Platypus and Seletek Tarsero

Focuser model

SC/HD, Newton, Refractor