MicroTouch Stepper Motor for Stellarvue (25mm) (MTAF-SMSV25)

Name: MicroTouch Stepper Motor for Stellarvue (25mm) (MTAF-SMSV25)
Brand: Starizona
SKU: MTAF-SMSV25
Price: 198.09 USD
Availability: InStock
Rating: 4.8 (5 reviews)

MicroTouch Stepper Motor for Stellarvue (25mm) (MTAF-SMSV25) - Main image

$198.09 ~~$279~~ In stock

Category: Focusing

Description

Extra stepper motor for the MicroTouch Autofocuser. This motor fits the standard Stellarvue focusers that have a 25mm mounting diameter. A larger size is available for the newer 33mm diameter mounting. To determine which you need, remove both the fine and coarse focus knobs from your Stellarvue scope, and measure the diameter of the steel collar that holds the fine focus bearings.

The stepper motor drives the fine-focus knob on the Stellarvue focuser for the ultimate in precision focusing.

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

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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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)

William ★★★★★ Oct 20, 2026

Dead quiet during operation and the 25mm collar fit my focuser perfectly — took less than ten minutes to swap out the old motor. Glad I went with this upgrade for reliable autofocusing.

Leo I. ★★★★★ Oct 19, 2026

Installed this on my Stellarvue focuser and the 25mm mounting diameter was spot on — no shims needed. The stepper motor engages smoothly and autofocus runs are noticeably quieter than my old setup.

Joshua S. ★★★★★ Oct 18, 2026

The 25mm mounting diameter was a perfect match for my Stellarvue focuser, making installation seamless. The motor engages smoothly and feels solidly built—no play or hesitation when I dial in precise focus. It’s a worthwhile upgrade for anyone wanting reliable autofocusing.