Bob's Knobs Adjusting Screws for SkyWatcher Newton Secondary Mirror

Bob’s Knobs for Sky-Watcher Newtonian Secondary Mirror: Adjusting the Secondary Mirror by Hand

This set replaces the small original screws of the secondary mirror of Sky-Watcher Newtonians. Just above the open tube, a screwdriver is risky: a slip will land directly on the primary mirror. With thumbscrews, that risk disappears completely.

Bob's Knobs replaces the original screws with stainless steel thumb screws with knurled grips. This allows you to collimate entirely by hand: no screwdriver over the optics, no rolling away Allen keys in the dark, and full control even with gloves on.

Features

• Three stainless steel thumb screws with knurled grip
• Aligning without tools, even in the dark or with gloves
• No risk of slipping with a screwdriver over the optics
• Corrosion resistant and mountable without permanent modification

Compatibility

Suitable for the secondary mirror holder of Sky-Watcher Newtonians. Replaces the original screws one-to-one, without modifications. Combine with Bob’s Knobs springs for completely tool-free collimation.

Specifications

You can find more accessories for this brand at the Bob’s Knobs brand page.