Manufacturer: Baader
Product number: BA2957220

EUR 365,00


incl. 19 % VAT (DE)  
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  • On stock





rating: 5.0 of 5
  • Details..
  • Technical data..
  • In the box..
2" BDS-SC Diamond Steeltrack® Focuser
for Schmidt-Cassegrain and EdgeHD telescopes

The completely new construction combines extreme durability and precision with high payload!

This focuser for Schmidt-Cassegrain and EdgeHD telescopes has less drawtube travel, as the coarse focusing is done by the primary mirror. The reduced length saves weight, compared with the very similar version for 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 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 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 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 / ½") 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/correctors


Manual:
Baader-Planetarium provides a manual for the Diamond Steeltrack focusers, it can be found here.
Drawtube Travel:30 mm
Payload:6 kg
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 (linked):80 mm
Total weight (incl. 2" clamp):1040 g
Focuser
2" Eyepiece clamp



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Reviews

Written by Krzysztof Pawlak
on 2022-10-26

"All good! Keep it up!"

Written by samuel knott
on 2022-10-09

"Pleased with the quality and acuracy. Backspace is a bit tight and I´m struggling with ao OAG to get focus with an 8 edge but that´s not the focuser´s fault I knew it would be difficult from the dimensions, still has improved focusing particularly autofocus"

Written by Mathias Juraschek
on 2022-09-19

"Tut was es soll."

Written by Gabriel Vegh
on 2021-12-24

"Sehr Gut"

Written by Gerd Rauscher
on 2021-11-11

"Produkt hat ausgezeichnete Qualität, wie bei BAADER zu erwarten. Wird verwendet an einem CELESTRON EDGE 1100. "

Written by Olaf Kavelmacher
on 2021-09-13

Das Fokussieren ist etwas nervig und sollte bei dem Preis besser funktionieren. Sonst Optisch einwandfrei. Habe mir den Baader SC/EHD Diamond Steeltrack dazu gekauft. Zusammen eine super Teleskop.

Written by Olaf Kavelmacher
on 2021-09-13

Ein sehr gutes Teil. Fokus einstellen macht richtig Spaß. Schon das erste drehen an dem Getriebe gibt ein wertiges Gefühl. Die Untersetzung ist Spielfrei und kein kippen unter Last.

Written by Lothar Konle
on 2021-06-25

"Visual observation on a 9.25"" Schmidt-Cassegrain telescope. Highly recommended for Stargazers and Astrophotography. Superior Quality !!!"

Written by Gerald Schur
on 2020-09-02

"Zum Fotografieren eine sehr gute Unterstützung beim Fokussieren. Es war vorher ein grobes Ratespiel ob die Scharfstellung passt, wenn es überhaut gelang. Jetzt spielerisch in Sekunden und die DSLR wird bombenfest gehalten. Die serienmäßige Schraubklemmung ist etwas fummelig (verkantet) beim Einführen des Okulars, Clicklock ist eine sinnvolle Verbesserung!"

Written by Giovanni Bernasconi
on 2020-01-01

"alles ok"

Written by Martin Schär
on 2019-12-13

"Ausserordentliche Fertigungsqualität."

Written by Zenghui Jiang
on 2019-09-26

"Sehr stabiler Okularauszug"

Written by Agnes Wörne
on 2018-07-25

"Sehr praktisch, um Gäste ans Teleskop zu lassen, die technisch unbedarft sind. Einfache Handhabung, insgesamt eine prima Ergänzung zum Teleskop."

Written by Oliver Buck-Werner
on 2016-05-19

"Sehr feinfühlige Fokussierung möglich. Die Qualität des Auszuges ist ausgezeichnet und sehr massiv. Ich verwende den Auszug an einem C11, adaptiert an dem 3,25´´-SC-Anschluss. Selbst die schwere Last eines Baader-Mark-V-Großfeldbinos mit 2 Delos-Okularen wird ohne Probleme gehalten; weder Vertippen noch Schlupf sind festzustellen. Die Basis ist drehbar mit einstellbarem Widerstand. Preis-Leistungsverhältnis sehr gut."

Written by Attila Lenart
on 2016-01-09

"-high quality -solid & robust design -well prepared for a focuser motor or for a DIY driver -greatly improves focusing possibilities -its a bit expensive but its worth the price"