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Model: bk_cswn_priPart Number: SWpriBrand: Bob's Knobs
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.
IMPORTANT: Please ensure the Bob's knobs threads and factory screw threads match before installation.
Part: SWpriFits: Celestron C6-N/NGT, C8-N/NGT, and C10-N/NGT Newtonian telescopes.
Knobs: Black plastic, 16 mm (5/8”) diameter
Threads: Stainless steel
Part: CNsec30 or CNsec35Fits: Celestron C6-N/NGT, C8-N/NGT, and C10-N/NGT Newtonian telescopes.Knobs: Black plastic, 13 mm (1/2”) diameterThreads: Stainless steelNotes:
Part: SWpriFits: SkyWatcher Newtonian telescopes with factory collimation screws. If your scope already has factory fitted collimation and lock knobs then these are a different design and cannot be replaced with this part.
Knobs: Red plastic, 16 mm (5/8”) diameter
Part: CNsec30 or CNsec35Fits: SkyWatcher (5”, 6”, 8”, 10”, 12”, 14”, 16”) Newtonian telescopes.Knobs: Black plastic, 13 mm (1/2”) diameterThreads: Stainless steelNotes:
these knobs are a must-have for newtons, replaced the stock screws with bob's knobs and , extra tools are no longer needed for collimation (except when using a collimator). easy recplacement, remove one screw at a time, adjust collimation and you're ready. no hex-tools needed anymore. recommended.
I changed the collimation screws on my SW 200p to Bobs Knobs ,makes collimating so much easier especially for the secondary no risk of drooping an allen key onto mirror ,i did change the primary screws too, the primary wasn't so much of an issue and could have left the originals on tbh ,rated 4 stars due to cost for what they are .
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