Starlight Instruments Handy Stepper Motor for FeatherTouch Focusers # HSM

Our #: PAF-SI-HSM
Mfg #: SI-HSM
From Our Price: $370.00
Free shipping for this item in the US
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Product Details

This "Handy" Stepper Motor (HSM) unit from Starlight Instruments works with their FeatherTouch Electronic Focusing System (EFS) as well as on the Focuser Boss II electronic focuser. The design of this motor housing allows you to still be able to manually turn the focus knob on the focuser by simply turning the override knob on the motor housing.  This motor has a built-in temperature thermistor for temperature control through the SI-EFS and the Focuser Boss II digital system.

The HSM is available in 3 different versions, each of which is sold separately. Please make the correct selection above before adding this item to yout cart.

  • The HSM20 motor unit fits the 2.0" Feather Touch focusers, MPA Retrofits (Takahashi and TeleVue), and Micro Feather Touch Telescope Focusers for the SCT scopes.
  • The HSM30 motor unit fits the 2.0" Feather Touch Rack/Pinion focuser, 2.5" and 3.0" Feather Touch Rack/Pinion focusers, and the 2.7" Astro Physics focuser with the Feather Touch Upgrade.
  • The HSM35 motor unit fits the 3.5" Feather Touch Rack/Pinion focuser and the 4.0" Astro Physics focuser with the Feather Touch Upgrade.

The HSM20 has 19,450 steps per inch and the HSM30/35 have 24,300 steps per inch.

Other Information

  • Country of Manufacture: United States
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