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Rack-n-Pinion Focuser
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PRECISION 1.25"OD RACK-AND-PINION for NEWTONIAN
Rs 660 + 18% GST
RECISSION 1.25" OD RACK-AND-PINION for REFRACTOR
Rs 660 + 18% GST
FOCUSER that most telescope users will ever need. Durable corrosion-proof plastic base and draw tube with eyepiece holder for 1.25”OD. Dual knurled focus knobs turns easily, ensures precise focusing, no back lash and has a 70mm focus travel.

Fits on Newtonian reflectors for tube diameter 110mm, 140mm, 180, 200mm, 225 and 250mm at ease (Specify tube diameter at the time of ordering). It also makes a fine upgrade for an older STARTRACKER SYSTEM telescope. A worthy component for a home-built reflector / refractor too.

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GSO Precision Crayford style 1.25" Focuser for Newtonian Telescope
Rs 5700 + 18% GST
This high quality, single-speed 1.25" Crayford focuser for reflector telescopes from Guan Sheng Optical (GSO) is a joy to use. You will wonder how you ever lived without it once you install it!  It will greatly aid in achieving precise focus for visual observations and astrophotography and you will experience very smooth and precisely controlled focuser motion with zero backlash and zero image shift. 

CNC machined from aluminum and anodized black, this focuser comes with a base plate to attach to your reflector telescope.  The inner drawtube glides on 4 precision bearings and a roller shaft and provides 47mm of focus travel. The inner barrel is baffled and painted a flat black to minimize reflections for maximum contrast.

The features: 
  • Ultra smooth focus motion
  • Constant movement
  • 1.25" compression ring

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GSO Precision Crayford style 2" Focuser for Newtonian Telescope
Rs 7500 + 18% GST
This advantage of the Newtonian Crayford design focuser, constructed of strong aluminum with a black anodized finish, the drawtube glides on 4 bearing wheels with 40mm travel, a built-in tension knob for adjusting the "feel" to match your preference to gives zero image shift and zero backlash, offer ultra smooth and finely adjustable.

The friction can be adjusted with a large thumbscrew, a second thumbscrew can lock the focuser tightly in position. Feature 2" brass compression ring, adaptor from 2" to 1.25" with brass compression ring and 2" filter thread.

The features: 
  • Load capacity up to 2.7kgs 
  • Ultra smooth focus motion
  • Constant movement
  • 2" compression ring
  • 2" to 1.25" adaptor with compression ring and 2" filter thread

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GSO ultra 10:1 Micro Edge
2 inch Crayford Style focuser for Newtonian Telescope 303mm
Rs 8400 + 18% GST

This very high quality, dual-speed Crayford focuser for reflector telescopes from Guan Sheng Optical (GSO) is a joy to use. You will wonder how you ever lived without it once you install it! It will make achieving precise focus for visual observations and astrophotography a breeze and you will experience very smooth and precisely controlled focuser motion with zero backlash and zero image shift.

Focuser Specifications (With Curved Base Plate):

  • Minimum focuser height (with 1.25" adapter) = 3.27" (83mm)
  • Maximum focuser height (with 1.25" adapter) = 4.84" (123mm)
  • Minimum focuser height (without 1.25" adapter) = 2.87" (73mm)
  • Maximum focuser height (without 1.25" adapter) = 4.45" (113mm)
  • Tube travel = 1.57" (40mm)
  • Drawtube outer diameter (cut-out in your telescope tube must exceed this) = 2.29" (58.1mm)
  • Focuser weight (with 1.25" adapter) = 1lb-10.5oz (751gm)
  • Focus knob diameter = 1.57" (40mm)
  • Microfocuser knob diameter = 1.02" (26mm)
  • Microfocuser reduction ratio = 1:10
  • Maximum outer body diameter = 3.15" (80mm)
  • Millimeter markings on focuser drawtube: No
  • Rotatable: No (But body can be rotated by loosening two allen screws that connect the focuser to the base plate)
  • Dust plug: One 1.25" dust plug included
  • 2" to 1.25" adaptor with compression ring and 2" filter thread
 
 
 
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