Cloud Break Optics

R.A. Sight Hole Cover - for 1200/400 mounts and 900 mounts shipped prior to Oct. 2005 (M12666)

R.A. Sight Hole Cover - for 1200/400 mounts and 900 mounts shipped prior to - Main image
$28 $40 In stock

Category: Mount Accessories

Description

This sight hole cover threads onto the back end of the Right Ascension axis of the following mounts:
all 400 mounts
all 1200 mounts, except the original black, metric mount
all 900 mounts shipped prior to October 2005
One of these aluminum covers is included with all new mount purchases, but now they are available separately for anyone who needs one.

The rear of the 900GTO R.A. axis was redesigned in October 2005 to be slightly larger than the 1200s, 400s and earlier versions of 900s. This change resulted in the need for a larger diameter cover.

If you are uncertain when your 900GTO shipped, please use the photos (right) as a reference for where to measure on your mount to determine the correct cover size. We used a 1200GTO since it was readily available; however, the measurement points are identical on older 900 mounts.

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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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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 (5.0 / 5 · 5 reviews)

John ★★★★★

I was a little nervous about the threading, but it screwed on to my 1200 mount perfectly—no wobble or cross-threading at all. It feels solid and looks like it belongs there.

Leo ★★★★★

Finally, a clean fit that doesn't require jury-rigging with tape. The threads on this cover matched perfectly with my 900 mount's RA axis, and it stays snug without any wobble. It's a small upgrade, but it makes a big difference in keeping dust out of the hole.

Abigail ★★★★★

After a decade of using electrical tape to cover that old sight hole, this threaded cap is a massive relief — screws on perfectly and stays put. Feels solid enough to last another ten years.