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Telescope accessories > Alignment accessories > Collimation screws > Bobs Knobs > Bobs Knobs SCT 8" C8std
Product no.: 58044

SCT 8" C8std

$ 41.90 incl. VAT plus shipping costs
in stock
ready for shipping in 24 h + lead time
Express shipment possible for delivery tomorrow, 12.02.2026!
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Product description

The manufacturer Bob's Knobs supplies various collimation screws for Schmidt-Cassegrain, Ritchey-Chrétien and Newton telescopes.

The selection includes screws for primary and secondary mirrors for optics between 5" and 16". In addition, Bob's Knobs offers mounting screws for various mounts from Celestron (CGE, CGE Pro, NexStar), Losmandy (GM-8, G-11) and TeleVue (Gibraltar).

Please refer to the respective specifications and technical data to find the right screws for your model!

Fits: Celestron 8” (20 cm) f/10 post-1980 SCT with factory Allen or silver Phillips collimation screws, with or without Fastar secondary with silver collimation screws (C8 black, or gray; Ultima 2000; NexStar 8; many others). This includes the post-2005 orange-tube. Will NOT fit pre-1980 orange tube or most scopes with black Phillips factory collimation screws.

  • Knobs: Black plastic, 13 mm (1/2”) diameter
  • Threads: Black anodized aluminum alloy

Specifications

General

Type
Alignment accessories
Type of build
Screws

Product safety

Manufacturer: Bob's Knobs, 6976 Kempton Rd., IN 47330 Centerville, US, www.bobsknobs.com
Responsible person: NIMAX GmbH, Otto-Lilienthal-Str. 9, 86899 Landsberg am Lech, DE, [email protected]
Bobs Knobs SCT 8" C8std

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