What types of telescopes is the 400mm William Optics Losmandy plate designed for?
The 400 mm length is ideal for larger optical tubes, typically refractors of 130mm aperture and above, or Schmidt-Cassegrains (SCTs) of 9.25" or larger. It provides the necessary length to space tube rings far apart, which is critical for preventing flexure and achieving a precise balance with heavy imaging trains.
Will the William Optics D-Plate fit my non-William Optics mount?
Yes. This plate is manufactured to the industry-standard Losmandy D-style specification. It is compatible with any mount saddle designed to accept "D" style plates, regardless of the mount manufacturer (e.g., Sky-Watcher, Celestron, iOptron, Software Bisque).
What is the advantage of this 400mm William Optics plate over a shorter dovetail?
A longer dovetail offers two main advantages. First, it provides a wider range of balancing positions, making it easier to accommodate different accessory loads (e.g., guide scopes, filter wheels, heavy cameras). Second, by allowing tube rings to be mounted further apart, it creates a more rigid mechanical connection that significantly reduces tube flexure, leading to better imaging results.
How much does the William Optics Losmandy plate weigh?
The plate weighs 1.44 kg (3.17 lbs). This weight is a deliberate balance between providing the structural rigidity needed for heavy telescopes and conserving your mount's total payload capacity for other equipment.
Does the William Optics Losmandy plate include mounting screws for my telescope rings?
Mounting hardware is typically supplied with your telescope tube rings, not the dovetail plate. This plate features multiple pre-drilled and threaded holes to accommodate a wide variety of ring spacings, but you will need to use the screws that came with your specific rings.
Is this William Optics plate suitable for a dual-scope setup on my Celestron CGX-L mount?
Yes, absolutely. The 400 mm length and 105 mm width provide ample surface area to mount a primary OTA and a secondary guide scope or wide-field refractor side-by-side using a separate side-by-side saddle. Its Losmandy D-style profile is a perfect fit for the CGX-L's dual saddle plate.
