Focuser & Accessories

Temperature sensor allows accurate control of ambient temperature to maintain focus position during temperature changes

• The sensor is connected directly to the motor focus.
• The outdoor temperature is measured and can automatically compensate the focus drift by changing the temperature via the corresponding software.

Equipped with USB-C, Bluetooth and rechargeable battery, the focus motor from ZWO allows precise motorized focusing of your telescope for astrophotography and observation.

• USB-C connection for data transfer and power supply
• Can be controlled via Bluetooth
• Integrated rechargeable battery with up to one week of operating time
• Can easily move up to 5 kg
• ASCOM, ASIAIR and INDI are supported
• The ZWO EAF works with all common astrophotography programs and the ASIAir
• Can be controlled via smartphone or tablet
• With versatile connection plate for all common focusers, e.g. from TS-Optics, Astro Tech, Feather Touch ...
• On/off switch and focus buttons

The USB-C equipped focus motor from ZWO allows precise motorized focusing of your telescope for astrophotography and observation

• USB-C port for data transfer and power supply
• Can easily move up to 5 kg
• ASCOM, ASIAIR and INDI are supported
• The ZWO EAF works with all common astrophotography programs and the ASIAir
• Can be controlled via smartphone or tablet
• With versatile connection plate for all common focusers, e.g. from TS-Optics, Astro Tech, Feather Touch ...
• Standard version with focus motor, connection rail and USB-C cable etc.
• Handbox and temperature sensor available separately (included in the scope of delivery of the EAF Pro, see "Similar products")

Equip the 3" RAP focuser from popular manufacturers such as TS-Optics, Omegon, APM, etc. with the Toup Tek for AAF motor focus syste.

• Suitable for all 3" FOCR30, FOCR30S focusers and telescopes equipped with these focusers
• Enables the use of the Toup Tek AAF motor focus system
• Includes all mounting hardware; no additional accessories required
• Simple and self-explanatory installation
• Focuser and motor focus are not included in the scope of delivery

Adapt the Toup Tek AAF motor focus to Starlight Feather Touch focusers with this adapter 

• Compatible with all Toup Tek AAF motor focuses
• Compatible with all Starlight FTF 2“, 2.5” and 3" focusers
• Manufactured using 3D printing
• Resistant to UV rays and temperatures up to approx. 80° C

Equip the 2.5" RAP focusers from popular manufacturers such as TS-Optics, Omegon, APM, etc. with the Toup Tek for AAF motor focus system.

• Suitable for all 2.5" FOCR25, FOCR25S, and FOCR25-117 focusers and telescopes equipped with these focusers
• Enables the use of the Toup Tek AAF motor focus system
• Includes all mounting hardware; no additional accessories required
• Simple and self-explanatory assembly
• Dimensionally stable up to 80 °C thanks to the use of PETG in 3D printing
• Eyepiece extension and motor focus are not included in the scope of delivery 

Equip the 3.7" rack and pinion focuser from TS-Optics with the Toup Tek AAF motor focus system. 

• Suitable for 3.7" FOCR, focusers, and telescopes equipped with these focusers
• Enables the use of the Toup Tek AAF motor focus system
• Includes all mounting hardware, no additional accessories required
• Simple and self-explanatory installation
• Dimensionally stable up to 80 °C thanks to the use of PETG in 3D printing
• Eyepiece focuser and motor focus are not included in the scope of delive

Astroprints adapter for Toup Tek AAF motorized focus on Crayford N2 focuser

• All 2" Crayford focusers from TS-Optics, Omegon, and many others
• TS-Optics 6“ RC telescopes with 2” Crayford focusers
• TS Photon Newton telescopes with 2" Crayford focusers

Astroprints Toup Tek Mounting Kit for AAF Motor Focus on Monorail 3" Eyepiece Holder

• All 3" monorail focusers
• TS-Optics 10" - 16" RC telescopes and Cassegrains

Astroprints Toup Tek Mounting Kit for AAF Motor Focus on Monorail 2" Eyepiece Holder

• All 2" monorail focusers
• TS-Optics 6“ and 8” RC telescopes and Cassegrains
• TS Photon Newton telescopes with 2" monorail focusers

Equip the popular UNCN2-G2 und TSRPN2 focusers with the Toup Tek AAF motor focus system.

• Suitable for UNCN2-G2 und TSRPN2 focusers
• Enables the use of the AAF motor focus system from Toup Tek
• Manufactured using 3D printing
• Resistant to UV rays and temperatures up to approx. 80° C

Equip the popular Baader Diamond Steeltrack focusers with the Toup Tek AAF motor focus system.

• Suitable for Baader Diamond Steeltrack focusers
• Enables the use of the AAF motor focus system from Toup Tek
• Manufactured using 3D printing
• Resistant to UV rays and temperatures up to approx. 80° C

Equip the popular Skywatcher Evolux 62 and 82 focusers with the Toup Tek AAF motor focus system.

• Suitable for Skywatcher Evolux 62ED and 82ED refractor focusers
• Enables the use of the AAF motor focus system from Toup Tek
• Manufactured using 3D printing
• Resistant to UV rays and temperatures up to approx. 80° C
• The Skywatcher 62ED and the Toup Tek AAF are not included in the scope of delivery

Attach the ASKAR FMA180 pro to mounts, attach a viewfinder, and focus motorized with the ZWO EAF focus motor.

• Created using 3D printing technology
• Suitable for the APO telephoto lens FMA180 pro from Askar
• Enables the use of ZWO EAF focus motors
• Lightweight plastic design, metal screws
• Dimensionally stable up to 80 °C thanks to the use of PETG in 3D printing
• Includes mounting kit with fastening materials, but no tools, telescope, or motor unit

Adapt the EAF motorized focus to Starlight Feather Touch True 3.5 focusers with this adapter

• Fits all EAF motorized focusers from ZWO
• Suitable for Starlight FTF True 3.5” focusers
• Manufactured in 3D printing
• Resistant to UV and temperatures up to approx. 80° C

Adapt the EAF motorized focus to Starlight Feather Touch True 3.2 focusers with this adapter

• Fits all EAF motorized focusers from ZWO
• Suitable for Starlight FTF True 3.2” focusers
• Manufactured in 3D printing
• Resistant to UV and temperatures up to approx. 80° C

• Built-in temperature sensor
• Zero backlash
• Manual adjustment
• Position memorizing during power off

• Telescope connection: female M117x1 thread with 360° rotation
• Can also be attached to refractors via special adapter
• Connection on the eyepiece side is 2" and 1.25"
• M82x1 male thread, M77x1 female thread, M74x1 male thread and M69x1 female thread for screw adaptations
• Drawtube travel is 50 mm
• Bearing via stainless steel rail with ball bearings
• Adjustment via toothed rack - rack-and-pinion principle
• Suitable for EAF motorized focus without additional adapter

Artesky Fast Focus Plane Kit

Allows easy adjustment of the focal plane and backfocus

• Tilter unit with 36 to 39 mm thickness
• Three female adapters, four male adapters
• Works especially well with CMOS cameras with up to 17.5 mm backfocus

• focusers from TS-Optics, Astroshop and many other brands
• Enables the use of the EAF motorised focus system from ZWO
• Manufactured using 3D printing
• Resistant to UV and temperatures up to approx. 80° C
• The Omegon focuser and the ZWO EAF are not included in the scope of deliver

Versatile base for flat surfaces, suitable for UNCN2, UNCN2-S, GSO focusers and older Baader Steeltrack focusers

•  Flat support surface with only 5.2 mm overall height
•  Four elongated holes for exact adjustment of the focusers
•  Four counter screws to compensate a tilted position of the focuser
•  Suitable for all focusers with a dovetail ring between 76-78 mm on the telescope side
•  Secure fastening of the focusers with four M3 grub screws - not included in the scope of delivery

• 2" CNC focuser
• 10 bearings in total
• zero deflection
• maximum load 4 kg
• cross-tooth rack
• low profile 44mm
• weight 740 grams
• compatible with EAF motors, Pegasus, Tecnosky etc.
• 60mm excursion

• 60mm focussing travel
• Load capacity up to 5 kg
• 1:10 reduction ratio
• Weight 700g
• Suitable for Skywatcher Newtonian telescopes
• Incl. Skywatcher adapter (round adapter/ notch adapter)

• 35mm focussing travel
• Load capacity up to 5 kg
• 1:10 reduction ratio
• Weight 700g
• Suitable for Skywatcher Newtonian telescopes
• Incl. Skywatcher adapter (round adapter/ notch adapter)

• Suitable for Skywatcher Quattro Newt on Linear Power focusers
• Enables the use of the EAF motorised focus system from ZWO
• Manufactured using 3D printing
• Resistant to UV and temperatures up to approx. 80° C
• The Skywatcher Linear Power focuser is not included in the scope of delivery

The highlights at a glance:

• Ball bearing 2" focuser: optimise your telescope with a more precise focuser for observation and photography
• Easy focusing: so you will be able to focus fast and not overshoot the target
• Adjustable: the friction can be adjusted
• 1kg load capacity. In addition, you can use the locking screw to fix the focus at any time if it should no longer deviate from the current setting.
• Focus on the point even at higher magnification
• 78mm diameter connector
• 59mm draw tube travel
• Height: 76mm to 2" adapter
• Incl. 2" to 1.25" adapter with filter thread (only 3mm optical travel)
• Weight 492g

The rack and pinion focuser is suitable for do-it-yourself construction or improvement of an 8" Newtonian telescope and also accepts correctors with 3" diameter.

• Suitable for telescope tubes with 230mm to 250mm diameter
• Including 360° rotation and tilting possibility
• 2" connection and auxiliary thread M82x1 (female) for adapting large correctors for astrophotography
• Micro-reduction for precise focusing
• The bearing of the extension tube is decoupled from the adjustment via gear drive (rack-and-pinion)

The rack and pinion focuser is suitable for do-it-yourself construction or improvement of a 10" Newtonian and also accepts correctors with 3" diameter.

• Suitable for telescope tubes with 230mm to 250mm diameter
• Including 360° rotation and tilting possibility
• 2" connection and auxiliary thread M82x1 (female) for adapting large correctors for astrophotography
• Micro-reduction for precise focusing
• The bearing of the extension tube is decoupled from the adjustment via gear drive (rack-and-pinion)

The adapter fits all 3" Starlight Feather Touch slides and allows connection to telescope adapters with M109x1 female thread

• Conversion adapter i.e. for Newtonian bases having the M109x1 thread
• Fits also to the TSAPO106 Apos from Teleskop-Service
• Fits directly to all 3" Starlight Feather Touch focusers
• Allows 360° rotation

The Prodigy Microfocuser is a robust 3" motorised focuser that allows you to precisely adjust and remotely control the focus of your telescope equipment.

• 76 mm (3") clear aperture
• rotation adjustment on telescope and camera side
• adaptation to numerous telescopes possible
• USB and power connections for further accessories
• extremely precise mechanics
• remote controllable
• temperature sensor included in delivery

With its coaxial power connector 5.5/2.1 mm, this power supply is suitable for Pocket Powerbox (PPB) and many other Pegasus products.

• Well matching the mentioned Pegasus Astro products
• Also available with other DC plugs
• Also available with other power cords
• Large range of input voltages
• Regulated with low ripple and noise
• Protected against damaging working states
• Sealed against dust and humidity

Proudly standing between Pocket and Ultimate Powerbox, it has been designed to provide more advanced features than Pocket Powerbox in a more compact / quality design.

• 4 x 12 V DC power outlets for your equipment (a single channel to switch all four outputs ON/OFF via software)
• 12 amps of total distributed current
• Adjustable output (3, 5, 8, 9, 12 V) / 3 A (can be switched ON/OFF) - power your DSLR / mirrorless camera
• Embedded powered USB3 hub ? 4 x USB3 ports or 3 x USB2 ports available
• 1 x power USB port (up to 3 amps) ? suitable for powering Raspberry PI 3/4
• Port (RJ12) for external accessories (like external focus controller)
• 2 channels with PWM for dew heaters ? RCA outputs (tune levels via software)
• Humidity and temperature sensor (included)
• Auto tune dew heater channels
• Reverse polarity protection
• USB / PC controlled or standalone pperation out of the box
• Lightweight and extremely compact aluminium enclosure

With its coaxial power connector 5.5/2.1 mm, this power supply is suitable for Pocket Powerbox (PPB) and many other Pegasus products.

• Well matching the mentioned Pegasus Astro products
• Also available with other DC plugs
• Also available with other power cords
• Large range of input voltages
• Regulated with low ripple and noise
• Protected against damaging working states
• Sealed against dust and humidity

With its coaxial power connector 5.5/2.1 mm, this power supply is suitable for Pocket Powerbox (PPB) and many other Pegasus products.

• Well matching the mentioned Pegasus Astro products
• Also available with other DC plugs
• Also available with other power cords
• Large range of input voltages
• Regulated with low ripple and noise
• Protected against damaging working states
• Sealed against dust and humidity

With its coaxial power connector 5.5/2.1 mm, this power supply is suitable for Pocket Powerbox (PPB) and many other Pegasus products.

• Well matching the mentioned Pegasus Astro products
• Also available with other DC plugs
• Also available with other power cords
• Large range of input voltages
• Regulated with low ripple and noise
• Protected against damaging working states
• Sealed against dust and humidity

With its coaxial power connector XT60, this power supply is suitable for Pocket Powerbox (PPB) and many other Pegasus products.

• Well matching the mentioned Pegasus Astro products
• Also available with other DC plugs
• Also available with other power cords
• Large range of input voltages
• Regulated with low ripple and noise
• Protected against damaging working states
• Sealed against dust and humidity

With its coaxial power connector 5.5/2.5 mm, this power supply is suitable for Pocket Powerbox (PPB) and many other Pegasus products.

• Well matching the mentioned Pegasus Astro products
• Also available with other DC plugs
• Also available with other power cords
• Large range of input voltages
• Regulated with low ripple and noise
• Protected against damaging working states
• Sealed against dust and humidity

With its coaxial power connector XT60, this power supply is suitable for Pocket Powerbox (PPB) and many other Pegasus products.

• Well matching the mentioned Pegasus Astro products
• Also available with other DC plugs
• Also available with other power cords
• Large range of input voltages
• Regulated with low ripple and noise
• Protected against damaging working states
• Sealed against dust and humidity

With its coaxial power connector 5.5/2.5 mm, this power supply is suitable for Pocket Powerbox (PPB) and many other Pegasus products.

• Well matching the mentioned Pegasus Astro products
• Also available with other DC plugs
• Also available with other power cords
• Large range of input voltages
• Regulated with low ripple and noise
• Protected against damaging working states
• Sealed against dust and humidity

With its coaxial power connector XT60, this power supply is suitable for Pocket Powerbox (PPB) and many other Pegasus products.

• Well matching the mentioned Pegasus Astro products
• Also available with other DC plugs
• Also available with other power cords
• Large range of input voltages
• Regulated with low ripple and noise
• Protected against damaging working states
• Sealed against dust and humidity

Focus fast, reliably and accurately your telescope using a stepper or DC motor and this controller.

• versatile, you can use your own motor instead of having to use one of PegasusAstro - and using another motor requires (perhaps) another cable, not another controller
• PC operation is standard, but manual operation does not even need a separate hand controller
• Temperature probe included
• Backlash compensation possible via firmware
• ASCOM and INDI compliant, but comes with a standalone program for Windows
• Firmware upgrade possible

This geared stepper motor has 0.0625° steps, 60 Ncm torque and little backlash, so you can focus your telescope fast and accurately with it - even with heavy imaging equipment.

• Useful resolution of 0.0625° (3.75 arc min) per step
• High torque for handling higher loads
• Low backlash making backlash compensation easier
• RJ45 socket allows using standard network cable for connecting to PegasusAstro´s Dual Motor Focus Controller
• Universal L Shaped Bracket allows mechanical connection to many focusers
• Supplied couplers allow mechanical connection to many focusing shafts

This device is a practical power supply for the "grab and go" astrophotographer who does not want too much automation.

• 4 x 12 V DC power outlets for your equipment (ON/OFF via software)
• 10 amps of total power
• DSLR output (can be switched ON/OFF)
• 2 channels with PWM for dew heaters RCA outputs (tune levels via software)
• Humidity and temperature sensor (included)
• Auto tune dew heaters
• Reverse polarity protection
• USB / PC controlled or standalone operation out of the box
• Lightweight and extremely compact enclosure

Equip the 3.7" TS-Optics rack and pinion focuser with the ZWO EAF motor focus system.

• Suitable for 3.7" TSFOCR, focusers and telescopes equipped with these focusers
• Allows the use of the EAF motorfocus system from ZWO
• Includes the complete mount, you do not need any accessories
• Simple and self-explanatory mounting
• Dimensionally stable up to 110 °C due to the use of special PLA for 3D printing
• Eyepiece focuser and motor focus are not included in the scope of delivery

Equip the 2.5" RAP focuser from TS-Optics with the ZWO EAF motor focus system.

• Suitable for all 2.5" TSFOCR25, TSFOCR25S and TSFOCR25-117 focusers and telescopes equipped with these focusers
• Allows the use of the EAF motor focus system from ZWO
• Includes the complete mounting, you do not need any accessories
• Simple and self-explanatory mounting
• Dimensionally stable up to 110 °C due to the use of special PLA for 3D printing
• Eyepiece extension and motor focus are not included in the scope of delivery

• Suitable for UNCN2-G2 and TSRPN2 focusers
• Enables the use of the EAF motor focus system from ZWO
• Elaborate and elegant adaptation to the focuser
• Simple and self-explanatory mounting
• Dimensionally stable up to 110 °C due to the use of special PLA for 3D printing

Equip the 2" Crayford focuser from TS-Optics with the ZWO EAF motor focus system.

• Suitable for all 2" Crayford focusers and telescopes equipped with these focusers, e.g. TS-Photon Newtons
• Fits to the Crayford focusers with and without micro-reduction
• Allows the use of the EAF motor focus system from ZWO
• Elaborate and elegant adaptation to the focuser
• Includes mounting adapter and screw
• Simple and self-explanatory mounting incl. mounting instructions
• Dimensionally stable up to 110 °C due to the use of special PLA for 3D printing

• Suitable for all 2" Monorail focusers and telescopes equipped with these focusers
• Allows the use of the EAF motorfocus system from ZWO
• Includes mounting adapter and four screws
• Simple and self-explanatory assembly, you will receive the assembly instructions after your purchase in an environmentally friendly PDF format
• Dimensionally stable up to 90 °C due to the use of PETG for 3D printing

Equip the 3" MONORAIL focuser from TS-Optics with the ZWO EAF motor focus system.

• Suitable for all 3" Monorail focusers and telescopes equipped with these focusers
• Suitable for all TS-Optics RC and Cassegrain telescopes with 10" aperture and larger
• Allows the use of the EAF motor focus system from ZWO
• Includes mounting adapter and four screws
• Easy and self-explanatory mounting, you will receive the mounting instructions after your purchase in an environmentally friendly PDF format
• Dimensionally stable up to 90 °C due to the use of PETG in 3D printing

This adapter allows you to connect ESATTO 2" to SkyWatcher/Orion ED80, ED100 or ED120 apochromatic refractors.

• Telescope side connection 96 mm flange with three female M4 threads for Skywatcher/Orion ED80/100/120
• Focuser side connection specific for PrimaLuce ESATTO 2"
• No reduction of back focus

SC 3.3? adapter for ESATTO 2" allows you to connect the ESATTO 2" focuser to Celestron SCT (11" and 14") and EdgeHD (925, 1100, and 1400) models.

• Telescope side connection 3.3" SC thread
• Focuser side connection specific for PrimaLuce ESATTO 2"
• Only 2 mm reduction of back focus

Thanks to the ESATTO 2" adapter for telescopes with SC thread, you can connect the ESATTO 2" to SC telescopes like the Celestron C6, C8, C9.25 and EdgeHD800.

• Telescope side connection 2" SC thread
• Focuser side connection specific for PrimaLuce ESATTO 2"
• No reduction of back focus

Esatto by Primaluce is a motorized focuser of the latest generation for the best possible results in astrophotography.

• Load capacity up to 5 kg without bending due to 8 specially developed ball bearings
• Short design with only 67 mm overall height
• 15 mm focus path with an incredible resolution of only 0.04 micron per step
• Adapters for connection to various telescopes and camera adapters are available
• Remote control by EAGLE or any Windows computer with control software (ASCOM compatible)
• USB connection to your computer (cable included)
• Remote control with WIFI possible from any smartphone, tablet or computer - due to the ESTATTO Virtual-HandPad app also for visual use

The visual back is necessary if you want to use your telescope visually with ESATTO 3" or if you want to connect a camera with a 2" nosepiece.

• Focuser side connection: M81x1 thread (female)
• Camera/eyepiece side connection: 2" receptacle
• Needs 12.5 mm back focus

This adapter allows you to connect accessories with M68 female thread to the ESATTO 3" focuser.

• Focuser side connection: M81x1 thread (female)
• Camera side connection: M68x1 thread (male)
• Needs only 4 mm back focus

This adapter allows you to connect the ESATTO 3" focuser to the Takahashi telescope FSQ85.

• Telescope side connection M72x1 thread (male) with stop ring for the Takahashi telescope FSQ85
• Focuser side connection specific for PrimaLuce ESATTO 3"

This adapter allows you to connect the ESATTO 3" focuser to the GSO/Orion/TPO Ritchey-Chrétien with 10, 12, 14 and 16 inches.

• Telescope side connection for GSO/Orion/TPO Ritchey-Chrétien 10, 12, 14 and 16 inches
• Focuser side connection specific for PrimaLuce ESATTO 3"

Temperature probe for the SESTO SENSO Motor Focus

• Convenient jack plug for quick connection
• Precise measurement of ambient temperature
• Enables automatic focus adjustment to compensate temperature variance
• Contrary to the image, the sensor has a straight plug, not an angled one.

ESATTO 3" is the robotic microfocuser perfect for many telescopes like large refractors, Ritchey-Chrétiens or Cassegrains, specifically designed for astrophotography.

• Crayford style focuser with 28 ball bearings
• Specially designed for very high load capacity (up to 8 kg) with no flexure
• Low profile design with only 77 mm thickness
• 25 mm focuser travel with an incredible resolution of 0.04 microns per step!
• Special adapters available to easily connect to many different telescopes
• Remotely controlled from EAGLE or any Windows computer, with dedicated control software or ASCOM drivers
• USB-C connector offering greater reliability and can be connected to any USB type port thanks to the included cable
• Remote control with WiFi from any smartphone, tablet or computer and ESATTO Virtual HandPad app also for visual use!
• Many camera threaded adapters available with stop ring on the camera side to rotate and keep the camera in the optical axis
• ARCO port to easily connect the ARCO camera rotator to the ESATTO without the need for additional data or power cables

This adapter allows you to connect accessories with M72 female thread to the ESATTO 3" focuser.

• Focuser side connection: M81x1 thread (female)
• Camera side connection: M72x1 thread (male)
• Needs only 4 mm back focus

This adapter allows you to connect accessories with M57 female thread to the ESATTO 3" focuser.

• Focuser side connection: M81x1 thread (female)
• Camera side connection: M57x0.75 thread (male)
• Needs only 4 mm back focus

This adapter allows you to connect accessories with M57 female thread to the ESATTO 3" focuser.

• Focuser side connection: M81x1 thread (female)
• Camera side connection: M57x1 thread (male)
• Needs only 4 mm back focus

This adapter allows you to connect accessories with M57 female thread to the ESATTO 3" focuser.

• Focuser side connection: M81x1 thread (female)
• Camera side connection: M57x1 thread (male)
• Needs only 4 mm back focus

This adapter allows you to connect accessories with M57 female thread to the ESATTO 3" focuser.

• Focuser side connection: M81x1 thread (female)
• Camera side connection: M57x1 thread (male)
• Needs only 4 mm back focus

This end cap fits the 3.5" Feather Touch focusers and allows the adaption of 2" accessories to this focuser.

• Eyepiece connection: 2" with compression ring and 3 machined thumb screws
• Focuser connection: female thread - fits the big male thread of the FTF35XX focuser

Versatile Motor Focus from PrimaLucelab with adaption to many focusers

• Outstanding precision of 0.7 microns/step
• Compatible to a wide range of focusers, often without external brackets
• Controlled by PC via USB-C (reversible) or tablet/smartphone via its own WiFi network
• Motor and electronics are fully integrated into the casing
• Dimmable status LEDs can even be turned off and are helpful at night
• Compact dimensions of 87.5 x 60 x 43 mm
• Included: configuration software with extensive control options, available via download
• ASCOM driver allows control with all conventional astro software
  Works especially fine with the ARCO camera rotator
• Can be supplied with a temperature probe for automatic focus correction

This hand controller allows precise manual focus, vibration free!

• Focusing with a rotary knob, thus intuitive
• Two speeds, slow precision mode is active if the knob is pressed inside
  Speed indicators
• Standard network cable with RJ45 plugs for connection
• Can work simultaneously with the PC operation

The FTF3545B-A is a high-end focuser for APO refractor telescopes or big RCs which are equipped with large 32 correctors for astrophotography.

• Draw tube travel 4.5" or 114.3 mm
• 100% correct position of of the image plane - the draw tube does not bend
• 89 mm clear aperture, enough to illuminate full-frame sensors
• Adjustment of the draw tube through rack and pinion. The tube itself is plain bearing mounted, using the combination stainless steel and Teflon.
• 3.5", 3" and 2" adapters are optional