Lumicon Low-Profile 1.25in Focuser for Newtonian on 3.5inch Base Lumicon LH2020 Telescopes, Binoculars, Spotting Scopes, Microscopes, Riflescopes, Astronomical Accessories,Refractor,Reflector,Monoculars,Night Vision,Cassegrain,GPS,Optical Tubes,Digital Camera,Eyepiece,Filters,Barlow,Lenses,Diagonals,Prisms,Tripods,Mounts,Finder Scopes,BinoViewers,Optics,Astronomy,Astrophotography,Laser Range Finders,Rangefinders, Special Offer
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LUMICON LOW-PROFILE 1.25IN FOCUSER FOR NEWTONIAN ON 3.5INCH BASE LH2020

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Lumicon: Lumicon Low-Profile 1.25in Focuser for Newtonian on 3.5inch Base Lumicon LH2020 Telescopes, Binoculars, Spotting Scopes, Microscopes, Riflescopes, Astronomical Accessories,Refractor,Reflector,Monoculars,Night Vision,Cassegrain,GPS,Optical Tubes,Digital Camera,Eyepiece,Filters,Barlow,Lenses,Diagonals,Prisms,Tripods,Mounts,Finder Scopes,BinoViewers,Optics,Astronomy,Astrophotography,Laser Range Finders,Rangefinders
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Lumicon Low-Profile 1.25in Focuser for Newtonian on 3.5inch Base

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MSRP: $200.00
Sale Price: $129.95
Buy Lumicon Low-Profile 1.25in Focuser for Newtonian on 3.5inch Base Lumicon LH2020 Telescopes, Binoculars, Spotting Scopes, Microscopes, Riflescopes, Astronomical Accessories,Refractor,Reflector,Monoculars,Night Vision,Cassegrain,GPS,Optical Tubes,Digital Camera,Eyepiece,Filters,Barlow,Lenses,Diagonals,Prisms,Tripods,Mounts,Finder Scopes,BinoViewers,Optics,Astronomy,Astrophotography,Laser Range Finders,Rangefinders Now!
Savings $70.05

Lumicon Low-Profile 1.25in Focuser for Newtonian on 3.5inch Base

Item No. 735-63020
Manuf. No. Lumicon LH2020

Eligible for Scope City Rewards at Check-out

The Low Profile 1.25" Focuser for Newtonian, 3.5" Base, is a high-precision, pin-and-groove type helical focuser. The 3.5" base provides for replacing larger focusers with a center-to-center hole-spacing of 2.75". The draw-tube does not rotate.

Accessories that take up back-focus, such Lumicon's popular 1.25" Multiple Filter Selector, can be used with ease and convenience. The high-precision, smooth focusing brings out the very best in your telescope's optics. The low-profile design quickly and easily converts your standard Newtonian to a camera-ready telescope. The U-groove base aligns and sits flush on any telescope tube with a radius of 4.5" or larger.

Specifications:

  • Focuser Minimum Height Above Tube* 1.75" (for 4.5" radius tube) 2" (for flat-base mounting)
  • Turns ratio: 2 per inch
  • Travel: 1"
  • Resolution/Backlash: < 0.0005"
  • Image shift: Negligible
  • Reverse action: Negligible
  • "Stiction:" Negligible

  • Footprint: 3.5" square
  • Mounting hole pattern: Square; 2.75" center-to-center
  • Min/Max focuser hole diameter: 1.5"/3.3"
  • Operating range: to 20degF/- 7deg C
  • Maximum recommended load: 3 lb.
  • Mounting Hardware: 8-32, included
*Precise minimum depends on radius of tube.

Note: Visual use of the Low Profile Focuser requires either the Lumicon 1.25" Multiple Filter Selector, LF5012, or a 1.25" extension tube, such as the Lumicon LA1020.


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