Making Room for the Focus Knob

The Drifter will use GSO’s dual-speed Crayford focus knob upgrade kit as its focus knob.  It’s a complicated assembly and worth using an off-the-shelf product that’s already battle tested. This is one of the few off-the-shelf components in the Drifter. The first half of making a custom slot in the drive block for this knob…

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Secondary Mirror Vanes

While work continues on the cartridges, I’ve added the secondary spider vanes. At this juncture, the plan is to use a single piece of bent aluminum. It will attach to the secondary mirror in the manner of Gary Seronik’s curved vane secondary. It will attach to the rotating cage on mounts that are still being…

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