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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

Focusers and Accessories

Focus is the difference between a sharp image and a nearly sharp one, and holding it across a Canadian night — where temperatures can drop fifteen degrees between dusk and dawn — is a mechanical problem, not a patience problem. David Astro carries focusers and focuser accessories in Canada, from Crayford and rack-and-pinion drawtubes to motor kits, rotators, compression rings and adapter flanges, in Canadian stock.

We fit focusers to telescopes routinely, including retrofits that require a specific flange or drawtube adapter. If you are replacing a stock focuser or adding motorization, tell us the telescope and we will confirm the fit.

Filters

$960.00 - $980.00
$960.00 - $980.00
$960.00 - $980.00
$960.00

Starlight Instruments Feather Touch 3.5" R&P Focuser

Options available

3.5-inch rack and pinion focuser for large telescopes Supports heavy imaging payloads of 18-20 pounds Dual-speed 10:1 reduction ratio for precise ...

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$960.00 - $980.00
$960.00 - $980.00
$960.00 - $980.00
$960.00
$1,260.00 - $1,260.00
$1,260.00
$1,260.00 - $1,260.00
$1,260.00

Starlight Instruments Feather Touch 3.5" R&P Focuser Kit for FSQ-106

SI-FTF3515-TAK FSQ106ED

Custom designed for the Takahashi FSQ-106ED telescope Robust 18-20 pound lifting capacity supports heavy imaging trains Precise 10:1 dual-speed re...

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$1,260.00 - $1,260.00
$1,260.00
$1,260.00 - $1,260.00
$1,260.00
$1,245.00 - $1,275.00
$1,245.00 - $1,275.00
$1,245.00 - $1,275.00
$1,245.00

Starlight Instruments Feather Touch Gen II 3.0" Motorized R&P Focuser

Options available

Lifts imaging trains up to 56 lb with zero slip Achieves 0.23 micron resolution per step for critical focus Integrated Posi Drive Motor System (PD...

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$1,245.00 - $1,275.00
$1,245.00 - $1,275.00
$1,245.00 - $1,275.00
$1,245.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00

Starlight Instruments Feather Touch Micro Focuser for Celestron 6" Evolution

SI-FTM-C6 Evolution

Replaces stock focuser on Celestron 6" Evolution & select 6SE SCTs Dual-speed mechanism for precise fine-focus adjustments Eliminates primary ...

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$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$370.00 - $370.00
$370.00
$370.00 - $370.00
$370.00

Starlight Instruments Feather Touch Micro Focuser for Celestron C14 SCT

SI-FTM-C14

Installs directly onto Celestron C-14 SCTs Provides dual-speed (coarse and fine) focusing Eliminates image shift caused by stock focuser Enables p...

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$370.00 - $370.00
$370.00
$370.00 - $370.00
$370.00
$360.00 - $360.00
$360.00
$360.00 - $360.00
$360.00

Starlight Instruments Feather Touch Micro Focuser for Celestron C9.25 SCT

SI-FTM-C9.25

Direct focuser upgrade for Celestron C9.25 SCT telescopes Provides 10:1 dual-speed fine focus control Eliminates image shift and "mirror flop" fro...

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$360.00 - $360.00
$360.00
$360.00 - $360.00
$360.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00

Starlight Instruments Feather Touch Micro Focuser for Celestron CPC11, C11 Edge HD, RASA 11" SCT

SI-FTM-CPC11

Replaces stock focuser on Celestron 11" SCTs True dual-speed 10:1 fine focus mechanism Eliminates image shift and mirror flop Installs easily with...

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$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00

Starlight Instruments Feather Touch Micro Focuser for Celestron CPC800/RASA 8", NexStar 6SE, C8Edge HD 8SE SCT and Sky-Watcher 150/180mm Mak

SI-FTM-CPC8

Replaces stock SCT focuser with a dual-speed mechanism Eliminates image shift for high-magnification viewing and imaging Designed for specific Cel...

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$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$360.00 - $360.00
$360.00
$360.00 - $360.00
$360.00

Starlight Instruments Feather Touch Micro Focuser for Celestron CPC9.25, C9.25 Edge HD, SCT

SI-FTM-CPC9.25

Replaces stock focuser knob with a dual-speed system Eliminates image shift and mirror flop common in SCTs Planetary reduction mechanism for ultra...

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$360.00 - $360.00
$360.00
$360.00 - $360.00
$360.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00

Starlight Instruments Feather Touch Micro for Celestron C11 SCT (NOT CPC1100)

SI-FTM-C11

Replaces stock focuser on Celestron C11 SCTs Adds dual-speed fine focusing control Eliminates image shift and backlash Designed for C11 telescopes...

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$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$370.00 - $370.00
$370.00
$370.00 - $370.00
$370.00

Starlight Instruments Feather Touch Micro for Celestron C14 Edge HD SCT

SI-FTM-C14HD

Adds dual-speed coarse and fine focusing to your telescope Engineered to eliminate common SCT image shift and mirror flop Direct-fit upgrade for C...

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$370.00 - $370.00
$370.00
$370.00 - $370.00
$370.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00

Starlight Instruments Feather Touch Micro for Celestron C8 (NOT CPC/NexStar SE)

SI-FTM-C8

Replaces stock focuser on Celestron C8 SCTs Provides ultra-fine, dual-speed focusing control Eliminates mirror shift and image slop Adds zero back...

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$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00

Starlight Instruments Feather Touch Micro for Meade 14.0" SCTs

SI-FTM-M14

Direct-fit upgrade for all Meade 14.0" SCTs, including LX200GPS and Classic models Adds ultra-precise dual-speed focusing control Dramatically red...

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$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00

Starlight Instruments Feather Touch Micro for Meade 8.0" SCT (Including Meade LX90, LX200GPS, LX200 Classics & 7" Mak)

SI-FTM-M8

Replaces stock focuser on Meade 8.0" SCTs and 7" Maksutovs Adds dual-speed, ultra-fine focusing control Eliminates image-shift and coarse focus ju...

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$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00

Starlight Instruments Feather Touch Micro for Meade f/10 10" or 12" SCTs

SI-FTM-M1012

Direct-fit upgrade for Meade 10" and 12" f/10 SCTs Replaces stock focuser on LX90, LX200GPS, and LX200 Classic models Dual-speed mechanism for pre...

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$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
$440.00 - $440.00
$440.00
$440.00 - $440.00
$440.00

Starlight Instruments Feather Touch Micro for Meade f/8 10" or 12" SCTs

SI-FTM-M1012-F8

Replaces the stock focuser knob on Meade f/8 10" and 12" SCTs Adds dual-speed, high-precision focusing control Eliminates image shift caused by mi...

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$440.00 - $440.00
$440.00
$440.00 - $440.00
$440.00
$280.00 - $480.00
$280.00 - $480.00
$280.00 - $480.00
$280.00

Starlight Instruments Feather Touch Rotatable 1.25" Crayford Focuser

Options available

10:1 dual-speed reduction for ultra-fine focus control Available with 0.75" or 1.5" of drawtube travel Crayford design eliminates image shift Draw...

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$280.00 - $480.00
$280.00 - $480.00
$280.00 - $480.00
$280.00
$570.00 - $590.00
$570.00 - $590.00
$570.00 - $590.00
$570.00

Starlight Instruments Feather Touch Rotatable 2.0" Crayford Focuser

Options available

10:1 fine-focus reduction ratio for precise adjustments 8-10 pound lifting capacity supports heavy imaging trains Crayford drive mechanism for zer...

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$570.00 - $590.00
$570.00 - $590.00
$570.00 - $590.00
$570.00
$690.00 - $690.00
$690.00
$690.00 - $690.00
$690.00

Starlight Instruments Feather Touch Rotatable 2.0" R&P Focuser

SI-FTF2015BCR-RP

13-15 pound lifting capacity for heavy imaging trains Rack and Pinion drive for zero-slip focusing 10:1 dual-speed fine focus mechanism Fully rota...

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$690.00 - $690.00
$690.00
$690.00 - $690.00
$690.00
$780.00 - $800.00
$780.00 - $800.00
$780.00 - $800.00
$780.00

Starlight Instruments Feather Touch TRUE 3.0" R&P Focuser

Options available

TRUE 3.0" clear aperture for unvignetted imaging with large sensors Supports heavy imaging trains with a 15-17 pound lifting capacity Precision 10...

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$780.00 - $800.00
$780.00 - $800.00
$780.00 - $800.00
$780.00
$265.00 - $265.00
$265.00
$265.00 - $265.00
$265.00

Starlight Instruments Focus Motor for RedCat/SpaceCat

SI-RCEF

Adds electronic focus control to William Optics RedCat/SpaceCat telescopes Based on the proven Starlight Instruments Handy Stepper Motor (HSM) Ena...

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$265.00 - $265.00
$265.00
$265.00 - $265.00
$265.00
$200.00 - $200.00
$200.00
$200.00 - $200.00
$200.00

Starlight Instruments Hand Controller for Manual Focuser Control

SI-FB-HANDCONTROLLER

Provides manual focus control for the Focuser Boss II system Tactile push-button interface for use at the eyepiece Ideal for quick visual adjustme...

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$200.00 - $200.00
$200.00
$200.00 - $200.00
$200.00
$370.00 - $370.00
$370.00
$370.00 - $370.00
$370.00

Starlight Instruments Handy Stepper Motor w/ Manual Focus Over-Ride

Options available

Adds automated, repeatable focusing to your telescope Features a simple manual focus override knob Built-in thermistor for temperature-compensated...

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$370.00 - $370.00
$370.00
$370.00 - $370.00
$370.00
$60.00 - $60.00
$60.00
$60.00 - $60.00
$60.00

Starlight Instruments JUMBO Fine Focus Knob

SI-BAK

Larger diameter for enhanced manual focus precision Improves tactile feel and reduces hand fatigue Direct-fit upgrade for most Feather Touch focus...

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$60.00 - $60.00
$60.00
$60.00 - $60.00
$60.00

Focuser Mechanics and What Matters Under Load

A focuser has to hold a camera train weighing several kilograms perfectly square to the optical axis while moving in increments of a few microns. Two things determine whether it does: the drive mechanism and the load rating.

  • Crayford focusers: A friction roller on a flat surface, giving smooth, backlash-free travel. Excellent for visual and light imaging loads; can slip under heavy trains, particularly when pointed near zenith.
  • Rack-and-pinion focusers: Toothed engagement that will not slip regardless of load, which is why most heavy imaging trains use them. Modern designs have effectively eliminated the old backlash complaints.
  • Motorized and electronic focusers: Stepper-driven focus with position repeatability, enabling autofocus routines and temperature compensation across a session.
  • Rotators: Precise framing and camera angle control without breaking the imaging train, and essential for optimizing off-axis guide star placement.
  • Compression rings: Replace a single set screw that tilts and marks your barrel with even radial clamping — a small part with a visible effect on star shapes.
  • Adapters and flanges: Telescope-specific mounting plates that let a third-party focuser replace a stock one.

Why Choose David Astro for Focusers and Accessories

Focuser upgrades are one of the most cost-effective improvements in astrophotography, and one of the easiest to order incorrectly.

  • Retrofit fit checks: We identify the adapter flange your specific telescope needs, and confirm that the new focuser's travel and profile will still let you reach focus.
  • Load rating advice: We weigh your intended imaging train against the focuser's rated capacity, including the tilt load that shows up when the tube is near zenith.
  • Authorized dealer: Genuine parts with full manufacturer warranty, serviced in Canada.
  • Canadian stock: In-stock focusers and accessories ship domestically without duties or brokerage charges.
  • In-house repair: We service focuser mechanics and electronics directly, which matters for a component with moving parts that see heavy use.

Focusers in Canada — Frequently Asked Questions

Crayford or rack-and-pinion for imaging?
Rack-and-pinion, once your imaging train exceeds roughly 2 kg. A Crayford's friction drive can slip under load at steep angles, and the slip is often mistaken for focus drift.
Will a motorized focuser fit my existing focuser?
Often yes, through a telescope-specific bracket that couples to the fine-focus shaft. Tell us the focuser model and we will confirm whether a bracket exists or a full replacement is needed.
How much does focus shift with temperature?
Enough to matter. A metal tube contracts measurably over a 15 degree drop, and at fast focal ratios the critical focus zone is only tens of microns. Temperature-compensated autofocus solves it.
Do you carry focusers for older telescopes?
We carry a wide range of adapter flanges covering many discontinued tubes. Send us the make and drawtube diameter and we will check.

Upgrading your focuser?

Tell us your telescope and imaging train weight and we will specify the right focuser and flange. Canadian stock, expert fitting advice.