Eyepiece and telescope pairing
Tele Vue 32mm Plossl in the Celestron StarSense Explorer LT 80AZ: magnification and field
What the Tele Vue 32mm Plossl does in the Celestron StarSense Explorer LT 80AZ, worked from the published focal lengths and apparent field.
Field of view
ring = 1.78 degrees true
dot = 2.8 mm exit pupil
- Magnification
- 28x900 mm / 32 mm
- True field
- 1.78 degrees50 deg / 28x
- Exit pupil
- 2.8 mm80 mm / 28x
- Max useful mag
- 189xpublished
Computed optics
- Barrel match
- 1.25 in eyepiece in a 1.25 in focuser
Good fit. In the Celestron StarSense Explorer LT 80AZ the Tele Vue 32mm Plossl gives 28x with a 1.78 degree true field and a 2.8 mm exit pupil, inside the telescope's useful range.
Magnification is the telescope focal length divided by the eyepiece focal length: 900 mm divided by 32 mm is 28x. The true field of view is the eyepiece's 50 degree apparent field divided by that magnification, 1.78 degrees.
The exit pupil, the width of the light beam leaving the eyepiece, is the aperture divided by the magnification, 80 mm over 28x, which is 2.8 mm. That makes this a medium-power general setting.
The eyepiece to buy
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