The Celestron C5 optical tube optical tube weighs 6 lb; the Sky-Watcher AZ-GTi is rated for 11 lb. Whether the tube fits the mount payload, and the margin once you add a diagonal and eyepiece.

Updated 05 September 2026.

Eyepiece and telescope pairing

Will the Celestron C5 optical tube fit on the Sky-Watcher AZ-GTi?

Whether the Sky-Watcher AZ-GTi can carry the Celestron C5 optical tube tube steadily, from the published tube weight and mount payload.

Optical tube weight
6 lb
Mount rated payload
11 lb (a compact WiFi GoTo altazimuth mount rated for a light instrument payload)
Tube as share of payload
55%
Dovetail
Vixen-style, matching this mount head
Fits

Comfortable fit. The Celestron C5 optical tube tube weighs 6 lb, well inside the Sky-Watcher AZ-GTi rated payload of 11 lb, so the mount carries it with margin for a diagonal, finder and eyepiece.

A mount's rated payload is for the whole instrument, not just the bare tube. The Celestron C5 optical tube tube is 6 lb, which is 55% of the Sky-Watcher AZ-GTi 11 lb rating before you add a star diagonal, finder and eyepiece.

For steady high-magnification views many observers keep the real load below about 70% of the rated payload, because damping time grows quickly as a mount nears its limit. A compact wifi goto altazimuth mount rated for a light instrument payload.

The mount to buy

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Related

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Questions and answers

Will the Celestron C5 optical tube fit on the Sky-Watcher AZ-GTi?

Comfortable fit. The Celestron C5 optical tube tube weighs 6 lb, well inside the Sky-Watcher AZ-GTi rated payload of 11 lb, so the mount carries it with margin for a diagonal, finder and eyepiece.