Eyepiece and telescope pairing

Will the Celestron NexStar 8SE fit on the Vixen-class dovetail head (CG-5 / EQ5 class)?

Whether the Vixen-class dovetail head (CG-5 / EQ5 class) can carry the Celestron NexStar 8SE tube steadily, from the published tube weight and mount payload.

Optical tube weight
12.5 lb
Mount rated payload
22 lb (the EQ5 / CG-5 class German equatorial, a common home for a 150 mm to 203 mm SCT tube)
Tube as share of payload
57%
Dovetail
Vixen-style, matching this mount head
Fits

Comfortable fit. The Celestron NexStar 8SE tube weighs 12.5 lb, well inside the Vixen-class dovetail head (CG-5 / EQ5 class) rated payload of 22 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 NexStar 8SE tube is 12.5 lb, which is 57% of the Vixen-class dovetail head (CG-5 / EQ5 class) 22 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. The eq5 / cg-5 class german equatorial, a common home for a 150 mm to 203 mm sct tube.