Orion Astrograph, Astroview, and Skyquest XT 4-Vane Phillips Screw Secondary

Article number: CNsec25-OR
Availability: On backorder
Delivery time: Ships in 2-3 Days from our Warehouse

Part: CNsec25 or CNsec35
Fits: Orion SkyQuest XT-series with factory long Phillips secondary collimation screws. This configuration is not as common as the set-screw secondary.

Secondary Characteristics: 4-vane spider, a deeply recessed center screw, and factory Phillips collimation screws. The secondary plate holding the screws is about 20 mm (3/4”) thick.

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


  1. The factory collimation screw length, measured below the head, can be either 25 mm or 32-35 mm. Order knobs with the correct screw length for your application, which is usually 35 mm. This secondary is somewhat rare on the XT-series.
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