Astro-Tech 13" Losmandy-Style "D-plate" universal dovetail plate, black


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This black 13" Astro-Tech Losmandy-style "D-plate" universal dovetail plate lets you mount long focal length optical tubes in Losmandy style saddles.
Our Product #: ATDUP13
Astro-Tech Product #: ATDUP13
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Product Description

This black Astro-Tech 13" universal dovetail plate fits the dovetail slot of the Losmandy-type "D-Plate" saddles used on a variety of manufacturers mounts.  You just need to make sure you mount had the wider Losmandy style saddle.

The Astro-Tech universal plate is designed primarily to hold the mounting rings of longer focal length Astro-Tech, TeleVue, Parks, Takahashi, Vixen, and Meade refractors. It will also hold the mounting rings of reflectors and the larger Astro-Tech, Questar, Meade, and Celestron catadioptric optical tubes.

The dovetail has a series of 11 unthreaded 6.9mm diameter mounting holes for attaching rings and other accessories using 1/4"-20 or metric bolts. Our plate comes standard with 4 M6 bolts.  There is one slot on the plate's centerline, plus there are two holes on 60mm centers and two slots on 60mm allowing you to attache virtually any ring set up.

The holes and slots are all countersunk on the underside of the dovetail. This assures that the bolts holding the mounting rings will not protrude and keep the dovetail plate from sliding back and forth in the mount saddle for balancing. As a thoughtful touch, the corners of the dovetail are slightly rounded to keep them from digging into the saddle and hanging up if the dovetail is not perfectly straight when it is installed on the mount.

The 0.5" thick dovetail is precision-machined of aluminum stock. It measures 13" long x 4" wide overall and is anodized black for good looks and durability. 

Tech Details

Weight 1.95 lbs.
Warranty 2 years


Review by:
I'm using this plate on the rings of my ES AR127 and it's a welcome addition since the OTA is a little fat-boy about 16 lb. The plate is half inch thick which I like better than the thicker ones I have. A very good plate and reasonably priced. (Posted on 12/20/2023)
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