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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.

Products

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$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00

Starlight Instruments 3.5" Adapter for Sky-Watcher Esprit 120/150

SI-A35-503-103

Connects a 3.5" Feather Touch focuser to a Sky-Watcher Esprit 120 or 150 ED APO Precision-machined from high-grade aluminum for a rigid, no-flex c...

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$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00

Starlight Instruments 3.5" Adapter for Takahashi FS128 Telescopes

SI-A35-503-145

Connects a 3.5" Feather Touch Focuser to a Takahashi FS128 Machined from high-quality aluminum Ensures a rigid, non-flexing connection for imaging...

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$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00

Starlight Instruments 3.5" Adapter for Takahashi FSQ106ED Telescopes

SI-A35-503-FSQ106ED

Precision-machined for the Takahashi FSQ-106ED telescope Enables mounting of a 3.5" Starlight Instruments Feather Touch Focuser Crafted from high-...

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$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00

Starlight Instruments 3.5" Adapter for Takahashi FSQ106N Telescopes

SI-A35-503-FSQ106

Adapts 3.5" Feather Touch focusers to the Takahashi FSQ106N Designed specifically for pre-2009 FSQ106N models Provides a rigid, thread-on connecti...

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$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
$270.00 - $270.00
$270.00
$270.00 - $270.00
$270.00

Starlight Instruments 3.5" Adapter for Takahashi TOA 150 Telescopes

SI-A35-503-TOA150

Adapts 3.5" Feather Touch Focusers to Takahashi TOA-150 Telescopes Precision-Machined from High-Quality Aluminum Ensures a Rigid, No-Flex Connecti...

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$270.00 - $270.00
$270.00
$270.00 - $270.00
$270.00
$200.00 - $200.00
$200.00
$200.00 - $200.00
$200.00

Starlight Instruments 3.5" Adapter for TEC Large Refractors

SI-A35-503TEC

Connects 3.5" Feather Touch Focusers to TEC Large Refractors Precision-Machined Aluminum Construction Ensures Perfect Optical Alignment Non-Thread...

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$200.00 - $200.00
$200.00
$200.00 - $200.00
$200.00
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00

Starlight Instruments 3.5" Adapter for Teleskop Service TS130/TS150 Photoline

SI-A35-503-136

Connects 3.5" Feather Touch Focusers Designed for Teleskop Service TS130 Photoline Telescopes Designed for Teleskop Service TS150 Photoline Telesc...

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$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
$200.00 - $200.00
$200.00
$200.00 - $200.00
$200.00

Starlight Instruments 3.5" Adapter for TMB130 Telescopes

SI-A35-503TMB

Connects 3.5" Starlight Instruments focusers to TMB130 telescopes Ensures precise, rigid optical alignment Machined from high-quality aluminum Fin...

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$200.00 - $200.00
$200.00
$200.00 - $200.00
$200.00
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00

Starlight Instruments 3.5" Adapter for William Optics FLT132, APM 130, and TS Photoline F7 Telescopes

SI-A35-503-WOFLT132

Connects a 3.5" Feather Touch focuser to select telescopes Compatible with William Optics FLT132 Compatible with APM 130 models Compatible with TS...

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$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
Starlight Instruments 3.5" Adapter for William Optics FLT151, FLT152, FLT158 & TS152 Telescopes
$270.00 - $270.00
$270.00
$270.00 - $270.00
$270.00

Starlight Instruments 3.5" Adapter for William Optics FLT151, FLT152, FLT158 & TS152 Telescopes

SI-A35-503-WOFLT152

Connects a 3.5" Feather Touch Focuser to select William Optics telescopes Compatible with William Optics FLT151, FLT152, and FLT158 models Compati...

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$270.00 - $270.00
$270.00
$270.00 - $270.00
$270.00
$270.00 - $270.00
$270.00
$270.00 - $270.00
$270.00

Starlight Instruments 3.5" Adapter for William Optics FLT178

SI-A35-503-WOFLT178

Connects 3.5" Starlight Instruments focusers to William Optics FLT178 telescopes Precision-machined from a single block of high-grade aluminum Ano...

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$270.00 - $270.00
$270.00
$270.00 - $270.00
$270.00
$220.00 - $220.00
$220.00
$220.00 - $220.00
$220.00

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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$220.00 - $220.00
$220.00
$220.00 - $220.00
$220.00
$180.00 - $180.00
$180.00
$180.00 - $180.00
$180.00

Starlight Instruments 3.5" Base Flat w/ Leveling Screws

SI-BA35FL

Designed for 3.5" Feather Touch Focusers Flat Base for Custom Telescope Builds Features Leveling Screws for Precise Collimation Mounting Hole Patt...

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$180.00 - $180.00
$180.00
$180.00 - $180.00
$180.00
$180.00 - $180.00
$180.00
$180.00 - $180.00
$180.00

Starlight Instruments 3.5" Diameter Riser

SI-R35-4.0

3.5" Diameter: Precisely matches the mounting pattern of Starlight Instruments 3.5" focuser bases. 4.0" Height Extension: Adds 4.0 inches of hei...

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$180.00 - $180.00
$180.00
$180.00 - $180.00
$180.00
Starlight Instruments 3.5" Diameter Riser, Adds 3.35" to Length
$150.00 - $150.00
$150.00
$150.00 - $150.00
$150.00

Starlight Instruments 3.5" Diameter Riser, Adds 3.35" to Length

SI-R35-3.35

Extends optical path by 3.35" (85 mm) Designed for 3.5" diameter Feather Touch focusers Fits all FTF35xx series focusers Threads directly onto the...

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$150.00 - $150.00
$150.00
$150.00 - $150.00
$150.00
$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00

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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$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00
$220.00 - $220.00
$220.00
$220.00 - $220.00
$220.00

Starlight Instruments 3.5" End Cap Collet Style w/ 2.0" Opening

SI-EC35-505

Fits all Starlight Instruments 3.5" Feather Touch focusers Provides a secure 2.0" opening for accessories Collet-style clamp ensures perfect cente...

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$220.00 - $220.00
$220.00
$220.00 - $220.00
$220.00
$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00

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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$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00
$190.00 - $190.00
$190.00
$190.00 - $190.00
$190.00

Starlight Instruments 3.5" End Cap for CFW2-7 Series/CCD Camera & Filter Wheels

SI-EC35-505-13

Fits 3.5" Starlight Instruments Feather Touch Focusers Provides a rigid 2.0"-24TPI male threaded connection Designed for the FLI CFW2-7 Filter Whe...

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$190.00 - $190.00
$190.00
$190.00 - $190.00
$190.00
$190.00 - $190.00
$190.00
$190.00 - $190.00
$190.00

Starlight Instruments 3.5" End Cap for SBIG and FLI 5 Series/CCD Camera & Filter Wheels

SI-EC35-505-12

Adapts 3.5" Feather Touch focusers Provides a 3.0"x24tpi male thread connection Designed for FLI Proline and 5 Series cameras Compatible with sele...

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$190.00 - $190.00
$190.00
$190.00 - $190.00
$190.00
$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00

Starlight Instruments 3.5" End Cap for Sky-Watcher M65 Male Threaded Accessories

SI-EC35-505-65

Adapts 3.5" Feather Touch Focusers to Sky-Watcher accessories Provides a secure M65x1 female threaded connection Eliminates sag and tilt common wi...

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$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00

Starlight Instruments 3.5" End Cap for Stellarvue Field Flattener

SI-EC35-505-85

Connects 3.5" Feather Touch Focusers Designed for the Stellarvue 85mm Field Flattener Features M85x1 Female Threads Machined from High-Quality Alu...

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$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00

Starlight Instruments 3.5" End Cap for Takahashi 72mm Male Threaded Accessories

SI-EC35-505-72

Adapts 3.5" Feather Touch focusers to accept Takahashi accessories Provides a female 72mm x 1mm threaded interface Ensures a rigid, non-flexing co...

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$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00

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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$160.00 - $160.00
$160.00
$160.00 - $160.00
$160.00