About this product
Model: bk_st_13028hnt_sec
Part Number: SPSTsec
Bobs Knobs Sharpstar 13028HNT Secondary Collimation 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.
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: Black plastic, 16 mm (5/8”) diameter
- Threads: Stainless steel
Notes:
The factory dust cover will no longer fit onto the OTA after secondary knobs are installed due to lack of clearance. A shower cap can be substituted if desired, or the dust cover can be omitted altogether if the telescope is stored in an enclosed case.
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