Celestron NexStar Evolution 6: 150 mm aperture, 1500 mm focal length, f/10, Schmidt-Cassegrain. The magnification, true field and exit pupil each eyepiece gives, and the barrel, mount and camera adapter that fit.

Updated 05 September 2026.

Optical reference

Celestron NexStar Evolution 6: aperture, focal length and eyepiece fit

What the Celestron NexStar Evolution 6 measures, the magnification and true field each eyepiece produces in it, and the barrel, mount payload and camera adapter that fit.

Published specifications

Aperture
150 mm (5.91 in)
Focal length
1500 mm
Focal ratio
f/10
Optical design
Schmidt-Cassegrain
Focuser / eyepiece barrel
1.25 in visual back (SCT rear cell); a 2 in diagonal fits with an SCT-to-2 in adapter
Mount
Computerized single-fork altazimuth with WiFi (GoTo)
Highest useful magnification (published)
354x
Optical tube weight
10 lb

Eyepiece ladder

2 pairings

The Evolution 6 pairs the 150 mm f/10 C6 optics with a rechargeable WiFi fork mount. Its 1500 mm focal length gives sharp planetary views and reaches brighter deep-sky objects at lower power.

Because magnification is the telescope's 1500 mm focal length divided by the eyepiece focal length, a 25 mm eyepiece gives 60x here and a 10 mm eyepiece gives 150x. The highest useful magnification is the published 354x, beyond which the image dims and softens without showing more detail.

The focuser takes 2 in eyepieces, so long 2 in wide-field eyepieces such as the Omni 56 mm fit as well as 1.25 in ones.

Match an eyepiece, mount or camera

Questions and answers

What is the aperture of the Celestron NexStar Evolution 6?

150 mm (5.91 in)

What is the focal length of the Celestron NexStar Evolution 6?

1500 mm

What is the focal ratio of the Celestron NexStar Evolution 6?

f/10

What is the optical design of the Celestron NexStar Evolution 6?

Schmidt-Cassegrain