Bob's Knobs iOptron 16'' RC Secondary Collimation Knobs
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Bob's Knobs iOptron 16" RC Secondary Collimation Knobs

£24.00✓ 2 year warranty

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In stock shipped 1-2 working days.
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About this product

Model:  bk_at16rc_sec
Part Number:  AT16RC

Replacement collimation knobs for iOptron / Astro-Tech / GSO / Orion / TPO 16" RC Series telescopes.

Bob's Knobs are the BEST option for tool-free collimation.

Simple to fit and easy to use.

Collimate your telescope without an Allen key or screwdriver!

Instructions are supplied but can also be found online as well as useful FAQ.

Images are representative and may not show the exact knob size / threads.

IMPORTANT: Please ensure the Bob's knobs threads and factory screw threads match before installation.

Knobs for iOptron / Astro-Tech / GSO / Orion / TPO 16" f/8 Ritchey-Crétien Truss-Tube Secondary

Part: AT16RC
Fits: Astro-Tech, GSO, Orion (US), and TPO 16" f/8 RCT truss-tube secondary

Knobs: Black plastic, 16 mm (5/8”) diameter
Threads: Stainless Steel.

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