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Starlight Instruments Focuser Boss II Electronic Focusing Control

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Starlight Instruments
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Starlight Instruments is proud to release its new Electronic Focusing System. The Focuser Boss II digital kit works through any ASCOM compliant software, such as Maxim DL, FocusMax, SG Pro, and CCD Soft.


  • The Focuser Boss IS compatible with a Mac through Sky X with a daily build 7315 or later.
  • This system comes standard with the digital hub and the motor(s) can be selected from the drop down menu.
  • The HSM20 will fit any Feather Touch Micro Focuser, Feather Touch retrofit pinion assembly upgrade, or 2.0" Feather Touch Crayford focuser.
  • The HSM30 will fit any 2.5", 3.0" or 2.0" Feather Touch Rack/Pinion focuser, and Astro Physics 2.7" with Feather Touch pinion assembly upgrade.
  • The HSM35 will fit any 3.5" Feather Touch focuser, Astro Phyics 3.5" and 4.0" with Feather Touch pinion assembly upgrade.
  • The WIFI option allows you to control the focuser via Smart phone or IPAD.  Your phone can be used to control the focuser and the hand controller is not needed unless you want to use both a Smart phone and Hand Controller
  • The push buttons on the Hand Controller can be used to move the focuser in or out.
  • The Temperature Sensor is used to compensate the focuser for changes in temperature.
  • The 2nd focuser control board is used to control 2 Feather Touch focusers simultaneously.

Downloads Below:

Focuser Boss II Installation Setup Instructions

Focuser Boss II Software

USB-to-Serial Converter Driver Download

CCDSoft Instructions

Focuser Boss II Firmware update instructions

Handy Motor Installation Instructions

Photo of installed Handy Motor


Specifications: Starlight Instruments Focuser Boss II Electronic Focusing Control

What's in the Box

What's in the Box: Starlight Instruments Focuser Boss II Electronic Focusing Control

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