Focuser Boss II Focusing Kit - HSM30 - Dual control board

Focuser Boss II Focusing Kit - HSM30 - Dual control board - View 3

$525.6 ~~$720~~ In stock

This option includes the dual control board, which allows you to control two focusers at the same time.

The HSM/MSM30 will fit any 2.5", 3.0" or 2.0" Feather Touch Rack/Pinion focuser.

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 a digital hub and stepper motor and allows you to upgrade to the options listed in the drop down boxes.

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 built in, allowing for temperature compensation.

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

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Avery ★★★★★ Oct 20, 2026

The dual control board is a game changer for my setup, letting me adjust two focusers simultaneously without fumbling in the dark. It snapped onto my 2.5" Feather Touch smoothly, and the whole kit feels solidly built for the price.

Thomas ★★★★★ Oct 19, 2026

I was worried the HSM30 might not fit my older 3-inch focuser, but it slid right on with zero play. The dual control board lets me tweak both my main and secondary focusers from a single hand controller, which is a game changer for my imaging sessions.

Chloe I. ★★★★★ Oct 18, 2026

The dual control board makes switching between my two focusers seamless during imaging sessions. It handles the 2.5" rack smoothly, and the build feels solid enough for regular use.