Cloud Break Optics

Polar alignment upgrade kit for RST-135

Polar alignment upgrade kit for RST-135 - Main image
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$243.75 $325 In stock

Category: Mount Accessories

This is an upgraded part to improve the polar alignment of RST-135 (RST-150H) mount. Rainbow is selling a complete mount base for users to easily upgrade themselves. You can save the cost of shipping mounts for upgrades and save time.  The upgrade kit includes all necessary parts, bolts and tools, as well as a manual.

Rainbow currently takes orders for a month, produces them and ships them at once. Please provide the serial number of your mount. This is because the serial number is laser-marked on the base.

Before you pay

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When it ships

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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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If you need a refund

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Please contact us for the refund processing timeframe before returning an item.

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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 (4.4 / 5 · 5 reviews)

Joshua ★★★★★

Installed this on my RST-135 and the new base makes drift alignment much more intuitive. It feels solid and I got a sharper polar scope view on first try. Saves me time setting up in the field.

James P. ★★★★★

I was skeptical at first, but the base is machined so precisely that polar alignment now holds rock-solid even after a full night of imaging. It saved me the headache of shipping the whole mount back for the upgrade.

Riley Q. ★★★★☆

I was a bit worried about the installation process, but swapping the old base for this one was surprisingly straightforward. The integrated wedge feels much more precise, making fine-tuning the polar alignment a lot less frustrating and saving me from shipping costs on the full mount.

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