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Starlight Instruments Focuser Accessories

Starlight Instruments focuser accessories are the parts that fit a Feather Touch focuser to a specific telescope and connect it to the rest of your train. Telescope adapters exist for many refractors, including Takahashi FSQ85 and FSQ106N, Sky-Watcher Esprit and Equinox, William Optics FLT and Explore Scientific models.

Threaded end caps such as M68 and M48, flat and curved bases with leveling screws, and PTFE coupled collars complete the range.

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Starlight Instruments 3.0" End Cap w/ 2.0" Compression Ring Opening

SI-EC30-1905-1
1 in stock

Adapts 3.0" Feather Touch Focusers for 2.0" Accessories Internal Brass Compression Ring for a Secure Grip Non-Marring Design Protects Eyepiece and...

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CA$210.00 - CA$210.00
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CA$224.00 - CA$224.00
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CA$224.00

Starlight Instruments 3.5" End Cap for APM/TMB Reducer

SI-EC35-505-82

Connects 3.5" Feather Touch Focusers Adapts APM/TMB .75x Reducers Thread Specification: M82x1 Female Material: High-Grade Aluminum Machined In-Hou...

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CA$224.00 - CA$224.00
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CA$280.00 - CA$280.00
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CA$280.00

Starlight Instruments 1.25" Dual Speed Pinion Assembly Upgrade

SI-FTF1575PA-DS

Adds dual-speed fine focusing to existing 1.25" single-speed focusers Precision planetary reduction mechanism for smooth, backlash-free control Co...

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CA$224.00 - CA$224.00
CA$224.00
CA$224.00 - CA$224.00
CA$224.00

Starlight Instruments 3.5" End Cap for William Optics Male Threaded Accessories

SI-EC35-505-11

Adapts 3.5" Feather Touch focusers to William Optics accessories Provides a secure M92x1mm female threaded connection Machined from high-grade alu...

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CA$224.00 - CA$224.00
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CA$224.00
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CA$224.00
CA$224.00 - CA$224.00
CA$224.00

Starlight Instruments 3.5" End Cap w/ 2.0" Compression Ring Opening

SI-EC35-505CR

Adapts 3.5" Feather Touch focusers to use 2.0" accessories Features a secure, non-marring brass compression ring Secured by multiple machined thum...

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CA$224.00 - CA$224.00
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CA$224.00
CA$210.00 - CA$210.00
CA$210.00
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CA$210.00

Starlight Instruments 3.0" End Cap for Sky-Watcher Corrector

SI-EC30-1905-65

Connects 3.0" Feather Touch Focusers to Sky-Watcher Correctors Provides a Secure, All-Threaded Connection Eliminates Tilt and Flexure from Compres...

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Starlight Instruments 3.0" End Cap for Takahashi M72X1 Male Threaded Accessories

SI-EC30-1905-72

Adapts 3.0" Feather Touch focusers to Takahashi accessories Provides a male M72x1 threaded connection Ensures a rigid, non-flexing imaging train F...

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CA$266.00 - CA$266.00
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CA$266.00

Starlight Instruments 3.0" Base Curved w/ Leveling Screws

SI-BA30CL

Custom-machined to your telescope tube's exact radius Provides a solid, flexure-free mounting platform Designed for 3.0" Starlight Instruments Fea...

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CA$266.00 - CA$266.00
CA$266.00
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CA$266.00
CA$210.00 - CA$210.00
CA$210.00
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CA$210.00

Starlight Instruments 3.0" End Cap for Ricarrdi Reducer

SI-EC30-1905-82

Connects 3.0" Feather Touch Focusers to Riccardi Reducers Provides a Secure, Zero-Flexure Threaded Connection Eliminates Tilt from Heavy Imaging T...

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CA$224.00 - CA$224.00
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CA$224.00

Starlight Instruments 3.5" End Cap - for Astro-Physics Telescope Accessories

SI-EC35-505AP

Adapts 3.5" Feather Touch focusers to Astro-Physics accessories Provides a secure 2.7" x 24 tpi female threaded connection Eliminates flexure and ...

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CA$266.00 - CA$266.00
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CA$266.00

Starlight Instruments 3.5" End Cap w/ M48X.75 Threads

SI-EC35-505-14

Attaches to 3.5" Feather Touch focusers Provides a male M48x0.75 threaded connection Creates a rigid, zero-flexure imaging train Ideal for heavy c...

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CA$126.00 - CA$126.00
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CA$126.00

Starlight Instruments 2.0" Base Flat w/ Leveling Screws

SI-BA20FL

For 2.0" Feather Touch Focusers Flat Base for Flat Mounting Surfaces Includes Integrated Leveling Screws for Collimation Provides Rigid, Tilt-Free...

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CA$126.00 - CA$126.00
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Starlight Instruments 2.5" End Cap - M68X1(F)

SI-EC25-2005-3

Adapts 2.5" Feather Touch focusers to a threaded connection Features M68x1 female threads for secure attachment Optimized for Teleskop Service fla...

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CA$266.00

Starlight Instruments 2.5" Base Curved w/ Leveling Screws

SI-BA25CL

Custom-machined base for curved telescope tubes Designed for Starlight Instruments 2.5" Feather Touch focusers Features integrated leveling screws...

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CA$266.00 - CA$266.00
CA$266.00
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Starlight Instruments 2.0" Base Curved w/ Leveling Screws for Vixen R200SS OTA

SI-BA20CL-R200SS

Custom-curved base for the Vixen R200SS OTA Provides a mounting platform for a 2.0" Starlight Instruments Feather Touch focuser Features integrate...

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Starlight Instruments 3.5" End Cap w/ 3.0" Compression Ring Opening

SI-EC35-505-3CR

Adapts 3.5" Feather Touch focusers to accept 3.0" accessories Provides a secure, non-marring grip with a brass compression ring Ideal for heavy im...

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Starlight Instruments True 3.0" Base Curved w/ Leveling Screws

SI-BA32CL

Designed for the Starlight Instruments True 3.0" Feather Touch Focuser Custom-machined to match your specific telescope tube radius or diameter Fe...

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CA$476.00 - CA$476.00
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Starlight Instruments Machined Base to Fit Telescopes Existing Mounting Holes

SI-BA20CL-CUSTOM

Custom machined to match your telescope's specific hole pattern Enables installation of a Feather Touch focuser without drilling Preserves the int...

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CA$476.00 - CA$476.00
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CA$308.00 - CA$308.00
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Starlight Instruments 3.5" Base Curved w/ Leveling Screws

SI-BA35CL

Custom-machined to match your telescope's tube diameter Provides a rigid, stable platform for 3.5" Feather Touch focusers Integrated leveling scre...

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CA$308.00 - CA$308.00
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Starlight Instruments 3.5" End Cap for Takahashi Large Field Flattener

SI-EC35-505-1

Connects 3.5" Feather Touch focusers to specific Takahashi large field flatteners Features a male M92x1 thread for a secure, rigid connection Comp...

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Starlight Instruments 3.0" End Cap - M68x1(F)

SI-EC30-1905-4

Adapts 3.0" Feather Touch focusers to M68x1 female threads Provides a secure, rigid connection for imaging equipment Machined from high-grade alum...

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Starlight Instruments Thermistor for Temperature Control

SI-FB-TEMP

Enables automated temperature focus compensation Designed exclusively for the Focuser Boss II Electronic Focuser Software-guided setup via the Tem...

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CA$154.00 - CA$154.00
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CA$210.00
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CA$210.00

Starlight Instruments 3.0" End Cap for William Optics Male Threaded Accessories

SI-EC30-1905-92

Adapts 3.0" Feather Touch focusers to William Optics accessories Provides a male M92x1 threaded connection Eliminates tilt and flexure from compre...

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CA$210.00 - CA$210.00
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Starlight Instruments 3.0" Adapter for William Optics 110 Megrez Telescopes

SI-A30-1903-20

Connects a 3.0" Feather Touch focuser to a William Optics 110 Megrez Provides a secure, no-flex mounting interface Machined for a precise fit to t...

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CA$350.00 - CA$350.00
CA$350.00
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CA$350.00