A Tele Vue 27mm Panoptic in the Celestron NexStar Evolution 6 gives 56x, a 1.22 degree true field and a 2.7 mm exit pupil. The worked calculation and whether it sits in the useful range.

Updated 05 September 2026.

Eyepiece and telescope pairing

Tele Vue 27mm Panoptic in the Celestron NexStar Evolution 6: magnification and field

What the Tele Vue 27mm Panoptic does in the Celestron NexStar Evolution 6, worked from the published focal lengths and apparent field.

Field of view

ring = 1.22 degrees true
dot = 2.7 mm exit pupil

Computed optics

Magnification
56x1500 mm / 27 mm
True field
1.22 degrees68 deg / 56x
Exit pupil
2.7 mm150 mm / 56x
Max useful mag
354xpublished
Barrel match
2 in eyepiece in a 2 in focuser
Fits

Good fit. In the Celestron NexStar Evolution 6 the Tele Vue 27mm Panoptic gives 56x with a 1.22 degree true field and a 2.7 mm exit pupil, inside the telescope's useful range.

Magnification is the telescope focal length divided by the eyepiece focal length: 1500 mm divided by 27 mm is 56x. The true field of view is the eyepiece's 68 degree apparent field divided by that magnification, 1.22 degrees.

The exit pupil, the width of the light beam leaving the eyepiece, is the aperture divided by the magnification, 150 mm over 56x, which is 2.7 mm. That makes this a medium-power general setting.

The eyepiece to buy

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Related

Celestron NexStar Evolution 6150 mm f/10
Tele Vue 27mm Panoptic27 mm, 68 deg
Best eyepiece for the Celestron NexStar Evolution 6exit-pupil match

Questions and answers

Tele Vue 27mm Panoptic in the Celestron NexStar Evolution 6: magnification and field?

Good fit. In the Celestron NexStar Evolution 6 the Tele Vue 27mm Panoptic gives 56x with a 1.22 degree true field and a 2.7 mm exit pupil, inside the telescope's useful range.