Which Orion Optics UK telescopes is the 450mm Losmandy plate for?
The AG14 450mm plate is designed for Orion Optics UK's CT (Classical Cassegrain) and AG (Astrograph) telescopes. As a general rule, the plate length should match the aperture of your telescope, making this ideal for a 450mm (18") instrument.
Will the AG14 plate fit my Paramount mount?
Yes. This plate is machined to the standard Losmandy D-style dovetail specification, which is compatible with the saddles used on Software Bisque Paramount mounts as well as Losmandy's own G11, Titan, and HGM mounts.
How do I choose the right length Losmandy plate for my telescope?
Orion Optics UK recommends selecting a dovetail plate that is the same length as your telescope's aperture. This ensures the tube rings are spaced widely enough for maximum stability and balance. For example, a 300mm aperture telescope would use a 300mm plate.
Can I use this 450mm Losmandy plate to attach my AG450 telescope to an HEQ5 mount?
Not directly. The HEQ5 mount uses a narrower Vixen-style saddle. To connect this Losmandy D-style plate to a Vixen-style mount, you would need an additional adapter or a different mounting plate system. This plate is intended for mounts that accept the wider Losmandy standard.
What's the difference between this Losmandy plate and a Vixen-style plate?
The primary difference is size and stability. Losmandy plates (D-style) are wider and thicker, providing a more rigid connection for heavier telescopes. Vixen plates (V-style) are narrower and are typically used for lighter, smaller optical tubes. This 450mm plate is a Losmandy-style plate designed for large instruments.
Can I mount a guide scope to my CT450 using this AG14 plate?
Yes. This plate acts as a foundation. When your CT450 is mounted in CNC rings attached to this 450mm plate, you can then bolt a smaller dovetail bar (like a Vixen-style bar) to the top of the rings. This allows you to mount a guide scope or other accessories parallel to your main telescope.