Knobs for CELESTRON 8” (20 cm) SCT

We offer knobs for all versions of the Celestron 8” f/10 Schmidt-Cassegrain secondary with either standard or metric collimation screws, including Fastar, non-Fastar, and the classic orange tube. Select knobs for your telescope from the list below.

Special Note: The Celestron 8” SCT uses either standard 6-32 or metric M3 collimation screws. Allen and set-style factory collimation screws have standard threads. For Phillips collimation screws, most silver screws are standard and most black screws are metric. See our hints for more information.

Products

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KNOBS FOR CELESTRON 8 inch (20 cm) f/10 HYPERSTAR

Fits: Celestron 8 inch (20 cm) f/10 SCT with Hyperstar option Knobs: Black-oxide steel, 12 mm (1/2 inch) diameter Threads: Black-oxide steel


Our price: $24.00 (€20.88)
Quantity
KNOBS FOR CELESTRON 8 inch (20 cm) f/10 SCT EdgeHD Fastar
Fits: Celestron 8 inch (20 cm) f/10 SCT with EdgeHD.optics
Knobs: Black-oxide steel, 12 mm (1/2 inch) diameter
Threads: Black-oxide steel

Our price: $24.00 (€20.88)
Quantity
KNOBS FOR CELESTRON 8 inch (20 cm) f/10 SCT WITH METRIC COLLIMATION SCREW THREADS (Not for EdgeHD)
Fits: Most Celestron 8 inch (20 cm) f/10 SCT made in 2005 and later with black Phillips factory collimation screws that have metric threads. Includes Skywatcher SCT. Not for the 8 inch EdgeHD. See Notes below.
Knobs: Black-oxide steel, 12 mm (1/2 inch) diameter
Threads: Black-oxide steel

Our price: $24.00 (€20.88)
Quantity
KNOBS FOR POST-1980 CELESTRON 8 inch (20 cm) f/10 SCT WITH STANDARD COLLIMATION SCREW THREADS
Fits: Celestron 8 inch (20 cm) f/10 Post-1980 SCT with factory Allen, silver Phillips, or headless set-style 6-32 collimation screws, with or without Fastar compatible secondary (C8 black, or gray; Ultima 2000; NexStar 8, others). Will not fit pre-1980 orange tube or most scopes with black Phillips factory collimation screws. See Notes below.
Knobs: Black plastic, 13 mm (1/2 inch) diameter
Threads: Black anodized aluminum alloy

Our price: $20.00 (€17.40)
Quantity
KNOBS FOR PRE-1980 CELESTRON 8 inch (20 cm) f/10 SCT WITH ORANGE TUBE
Fits: Celestron 8 inch (20 cm) f/10 SCT with orange optical tube and factory set-style collimation screws.
Knobs: Black plastic, 13 mm (1/2 inch) diameter
Threads: Black anodized aluminum alloy

Our price: $24.00 (€20.88)
Quantity
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