Knobs for Orion Skyquest and Starblast NEWTONIAN SET SCREW SECONDARY KNOBS

Article number: CNsec30-OR1
Availability: On backorder
Delivery time: Ships in 2-3 Days from our Warehouse

Fits: Celestron C8-N/NGT, C10-N/NGT, Orion Astroview, SkyQuest XX and XT, Skyview, Skywatcher, StarBlast, GSO, and many others.

Secondary Characteristics: 4-vane spider, a deeply recessed center screw, and factory headless set (grub) collimation screws. The secondary plate holding the screws is about 20 mm (3/4”) thick. This is a very common Newtonian secondary configuration.

Knobs: Black plastic, 13 mm (1/2”) diameter
Threads: Stainless steel


  1. We offer knobs with screws having either 30 mm or 35 mm length. Order knobs with a screw length sufficient to allow the knobs to clear the secondary housing. Knobs with 30 mm screws are the most common in this configuration.
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