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Focusers


 

          HOME | Product Listing | Order Info

 

 


 

 >  2" Newtonian Low-Profile Steeltrack

 

 >  2" SC Steeltrack (for Schmidt Cassegrains)

 

 >  2" Refractor Steeltrack

 

 >  3" Refractor Steeltrack

 

     >  3" RT Steeltrack Accessories 

 


 

 

 

Baader Steeltrack Premium Focusers

 

In recent years the Crayford style of ball-bearing guided  focuser has become popular due to its smooth motions, absence of pinion backlash, and rigid drawtube support.  Baader's new Steeltrack Premium Focusers incorporate a number of  innovative features that further enhance the smoothness and robustness of the Crayford focuser.  Steetrack focusers are available to fit practically every telescope, from Refractors (2" and 3" sizes) to Newtonians, and SCTs.

 

All Baader Steeltrack focusers incorporate the following features:

  • The precision ball bearings ride on hardened and polished stainless steel ways that are  inset into the thick-walled aluminum drawtube.  The large diameter pinion drive also rides on a precision laser cut  hardened and polished steel way.  This important feature delivers an ultra-smooth motion that is superior to to the rougher motions of an aluminum bearing system, and guarantees that the buttery-smooth motions will remain that way over the life of the focuser.  Crayford focusers that rely on machined and anodized aluminum bearing ways can become worn and pitted with use, which results in loss of smoothness and accuracy. 

  • The extra-large focusing knobs and Precision 1:10 reduction gearing permits ultra-fine motion control without backlash. 

  • Precision Pinion Drive and Bearing Assembly delivers an exceedingly smooth slipless motion and avoids the drawtube flexure present in other crayford focusers.

  • Each Steeltrack incorporates a drawtube locking screw that supports even extremely heavy cameras and eyepieces without flexure or slippage.  The knurled lock screw incorporates a swivelling anti-marring brass insert that allows firm clamping of the drawtube without marring or damage to the focusing mechanism. 

  • Future-proof.  Steeltrack focusers incorporate mounting features to permit addition of a motorized focussing accessory (availability 2010)

  • Internal drawtube surfaces are knife edge baffled to eliminate stray light reflections.

  • Bronze compression rings permit secure clamping of eyepieces and accessories without marring.

  • Baader Precision and Quality.  All parts are precisely machined and their high surface quality make the Baader Steeltrack an attractive compliment to any telescope.

  • Graduated markings on the drawtube aid in measuring and repeating focus positions.

  • A complete set of adapters and extensions permit adaptation onto practically any telescope.

 

 

2" Newtonian Low-Profile Steeltrack

 

2" Newtonian Steeltrack

(shown with optional Pushfix 2"/1 low-profile Reducer)

2" Newtonian Steeltrack

(as supplied, with universal base)

 

 

Upgrade practically any Newtonian, small or large, with all of the smoothness, precision, and features of Baader Planetarium's 2" Newtonian Low-Profile 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 30mm.

  • Universal Base, fits tubes 8" Dia and larger.  Designed especially to fit Synta/Celestron Reflectors.  54 x 90mm hole pattern (7mm diameter holes drilled at a 30degree angle from vertical to work with curved tubes ).

  • Optional low-profile (1mm) 2"/1 Pushfix Reducer.

  • Weighs 29oz  (811g).

 

- 2" Newtonian Steeltrack Crayford Focuser  (#FOC-NT)

  PRICING   |   ORDERING


2"/1 Pushfix Low-Profile Reducer

Baader's Pushfix Reducer is the perfect low-profile 2"/1 reducer for the Newtonian and SCT Steeltrack focusers.  The 'pushfix' reducer incorporates unique features not found in any other reducer.

  • When mated to the Newtonian and SCT Steeltrack Focusers, the Pushfix uses up only 1mm of height, saving precious back-focus.

  • Captive Bronze compression ring protects eyepieces from damage.

  • Threaded to accept 2" filters.

  • Unique 3-Way clamping:

  • Standard Knurled thumbscrew. Nests inside the mating Steeltrack focuser recess to preserve the ultra-low 1mm profile.

  • Semi-Permanent attachment to eyepieces.  Recessed setscrews can be tightened onto the compression ring to semi-permanently 'fix' the reducer to a 1.25" eyepiece, converting it to a 2" eyepiece.

  • The three recessed round-head nylon set screws can be adjusted to lightly bear on 1.25" eyepiece barrels, enabling them to be simply 'pushed' into the reducer and held by friction.

 

- 2"/1 Pushfix Low-Profile Reducer  (#T2-15A)

PRICING   |   ORDERING

 

2" SC Steeltrack

 

The Baader 2" SC Steeltrack Focuser enables Schmidt Cassegrains to deliver ultra-smooth focusing with zero image shift.

  • Fits Schmidt Cassegrains from 6" to 14".  The included adapters fit both the SCT 2" thread used on 8" and smaller scopes, and the 3.3" thread used on larger SCTs.

  • 30mm Focus travel

  • Fully Baffled and blackened drawtube kills off-axis stray light.

  • Optional low-profile (1mm) 2"/1 Pushfix Reducer.

  • Overall Length of 93mm, weighs 33oz (930g)

- 2" SC Steeltrack Crayford Focuser  (#FOC-SC)

PRICING   |   ORDERING

 

  2" Refractor Steeltrack

 

Baader Planetarium's 2" Refractor 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.

  • Includes 2"/1 Reducer, with internal Bronze compression ring. Optical Path Length 10mm.

  • 72mm dovetail receiver permits 360degree rotation of focuser with single-screw locking.

  • Optional RT Adapterset permits easy attachment to Celestron/Skywatcher/Zeiss refractors, and is easily adaptable to other refractors.

- 2" RT Steeltrack Crayford Focuser  (#FOC-RT2)  weight 1060g (2.33lb)

PRICING   |   ORDERING


RT Steeltrack Adapterset

The RT Steeltrack Adapterset consists of 4 parts:
  • Large Lock-Ring (M90 Internal Thread).  3 chrome grip 'spokes' permit easy rotation and locking of the focuser.
  • 72mm Dovetail Ring for attachement to focuser.  Also has M68 External Thread, fits directly onto Zeiss.
  • Expanding Ring, M80 External Thread, fits directly onto Zeiss.
  • Base Ring, Slip-fit OD 96mm.  Slips inside of tubes with approximate ID of 96mm.

When all 4 parts are combined, the RT Adapterset slips into 96mm ID tubes (used on Celestron/Skywatcher telescopes, or any other similar sized tube).  The adapter is then attached using (3) M3 screws around the periphery.

- Steeltrack RT Adapterset  (#FOC-RTAD)

PRICING   |   ORDERING

 

3" Refractor Steeltrack

 

Baader Planetarium's Giant 3" Refractor Steeltrack Focuser gives large refractor owners the same ultra-smooth focusing and robustness as their 2" focusers, but in an oversized 3" format.  There is no smoother and finer made large format focuser on the planet.

  • Overall length fully retracted 88mm (backfocus length), measured to face of 2" Eyepiece Holder.

  • Focuser Travel of 115mm.

  • Drawtube ID of 3" (76mm), OD 3.4" (87mm).  Fully internally baffled and blackened to eliminate off-axis stray light.  Threaded Internal M82. 

  • Includes Baader M82/M68 Reducer Ring for attachment of 2" Eyepiece Holder and M68 Extension Tubes.

  • Includes Deluxe 2" Eyepiece Holder, with internal Bronze compression ring and dual lock screws. Optical Path Length 12mm.  Also has M68 external thread for attachment of Baader M68 accessories.

  • 4" dovetail receiver permits 360degree rotation of focuser with single-screw locking.

  • Optional adapters and spacers permit easy attachment to large refractors.

  • Focuser Weight: 3lb 13oz (1740gm)

- 3" RT Steeltrack Crayford Focuser  (#FOC-RT3)

 

PRICING   |   ORDERING

 

 

3" RT Steeltrack shown with Optional Adapters

and Baader Quick Release Dovetail Finder Bracket

 

 

3" Refractor Steeltrack Accessories  

 

Adapter M100

 

The Adapter M100 enables attachment of the 3" RT Steeltrack Focuser into telescope backplates with an opening of 100mm

  • 4"Dovetail on one side for attachment of 3" RT Steeltrack Focuser.

  • M100 external thread on other side.

  • M100 Counternut for locking onto telescope backplates.

  • Fully Baffled and blackened internal surface kills off-axis stray light.

- MT100 Adapter  (#FOC-AD100)

  PRICING   |   ORDERING


 

Adapter M116

The Adapter M116 enables attachment of the 3" RT Steeltrack Focuser into telescope backplates with an M116 thread.

  • 4"Dovetail on one side for attachment of 3" RT Steeltrack Focuser.

  • M116 internal thread on other side.

  • 48mm Overall Length

  • Baffled and blackened internal surface kills off-axis stray light.

- MT116 Adapter  (#FOC-AD116)

  PRICING   |   ORDERING

 


 

RT Spacer

RT 3" Steeltrack Focuser

Shown with RT Spacer and

Baader Quick Release Dovetail Base

The 3" RT Spacer allows changing back-focus by providing quick connect/disconnect spacing of the 3" RT Steeltrack Focuser (39mm spacing length). 

  • 4"External Dovetail on one side for attachment of 3" RT Steeltrack Focuser.

  • 4"Internal Dovetail Receiver on opposite side, with 3 lock screws.

  • 39mm Spacing Length

  • Baffled and blackened internal surface kills off-axis stray light.

- RT Spacer  (#FOC-SPCR)

  PRICING   |   ORDERING

 

 


Last Update 12/31/09

 

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